diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..af736ed
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,23 @@
+{
+  "rules": {
+    "indent": [
+      2,
+      "tab"
+    ],
+    "strict": 0,
+    "no-console": 0,
+    "quotes": [
+      2,
+      "double"
+    ],
+    "semi": [
+      2,
+      "always"
+    ]
+  },
+  "env": {
+    "browser": true,
+    "node":true
+  },
+  "extends": "eslint:recommended"
+}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 6e29e8e..8f6f65f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 localtesting/*
 node_modules/
+*.iml
+*.ipr
+*.iws
+dist/
diff --git a/dist/simplemde.min.css b/dist/simplemde.min.css
deleted file mode 100644
index 8980444..0000000
--- a/dist/simplemde.min.css
+++ /dev/null
@@ -1,7 +0,0 @@
-/**
- * simplemde v1.7.5
- * Copyright Next Step Webs, Inc.
- * @link https://github.com/NextStepWebs/simplemde-markdown-editor
- * @license MIT
- */
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pre{-moz-border-radius:0;-webkit-border-radius:0;border-radius:0;border-width:0;background:0 0;font-family:inherit;font-size:inherit;margin:0;white-space:pre;word-wrap:normal;line-height:inherit;color:inherit;z-index:2;position:relative;overflow:visible;-webkit-tap-highlight-color:transparent}.CodeMirror-wrap pre{word-wrap:break-word;white-space:pre-wrap;word-break:normal}.CodeMirror-linebackground{position:absolute;left:0;right:0;top:0;bottom:0;z-index:0}.CodeMirror-linewidget{position:relative;z-index:2;overflow:auto}.CodeMirror-code{outline:0}.CodeMirror-gutter,.CodeMirror-gutters,.CodeMirror-linenumber,.CodeMirror-scroll,.CodeMirror-sizer{-moz-box-sizing:content-box;box-sizing:content-box}.CodeMirror-measure{position:absolute;width:100%;height:0;overflow:hidden;visibility:hidden}.CodeMirror-cursor{position:absolute}.CodeMirror-measure pre{position:static}div.CodeMirror-cursors{visibility:hidden;position:relative;z-index:3}.CodeMirror-focused 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GradientType=1);position:fixed;top:0;left:0;margin:0;padding:0}.editor-toolbar.fullscreen::after{width:20px;height:50px;background:-moz-linear-gradient(left,rgba(125,185,232,.01) 0,rgba(254,254,255,1) 99%,rgba(255,255,255,1) 100%);background:-webkit-gradient(linear,left top,right top,color-stop(0,rgba(125,185,232,.01)),color-stop(99%,rgba(254,254,255,1)),color-stop(100%,rgba(255,255,255,1)));background:-webkit-linear-gradient(left,rgba(125,185,232,.01) 0,rgba(254,254,255,1) 99%,rgba(255,255,255,1) 100%);background:-o-linear-gradient(left,rgba(125,185,232,.01) 0,rgba(254,254,255,1) 99%,rgba(255,255,255,1) 100%);background:-ms-linear-gradient(left,rgba(125,185,232,.01) 0,rgba(254,254,255,1) 99%,rgba(255,255,255,1) 100%);background:linear-gradient(to right,rgba(125,185,232,.01) 0,rgba(254,254,255,1) 99%,rgba(255,255,255,1) 100%);filter:progid: DXImageTransform.Microsoft.gradient( startColorstr='#037db9e8', endColorstr='#ffffff', GradientType=1);position:fixed;top:0;right:0;margin:0;padding:0}.editor-toolbar a{display:inline-block;text-align:center;text-decoration:none!important;color:#2c3e50!important;width:30px;height:30px;margin:0;border:1px solid transparent;border-radius:3px;cursor:pointer}.editor-toolbar a.active,.editor-toolbar a:hover{background:#fcfcfc;border-color:#95a5a6}.editor-toolbar a:before{line-height:30px}.editor-toolbar i.separator{display:inline-block;width:0;border-left:1px solid #d9d9d9;border-right:1px solid #fff;color:transparent;text-indent:-10px;margin:0 6px}.editor-toolbar a.fa-header-x:after{font-family:Arial,"Helvetica Neue",Helvetica,sans-serif;font-size:65%;vertical-align:text-bottom;position:relative;top:2px}.editor-toolbar a.fa-header-1:after{content:"1"}.editor-toolbar a.fa-header-2:after{content:"2"}.editor-toolbar a.fa-header-3:after{content:"3"}.editor-toolbar a.fa-header-bigger:after{content:"▲"}.editor-toolbar a.fa-header-smaller:after{content:"▼"}.editor-toolbar.disabled-for-preview a:not(.no-disable){pointer-events:none;background:#fff;border-color:transparent;text-shadow:inherit}@media only screen and (max-width:700px){.editor-toolbar a.no-mobile{display:none}}.editor-statusbar{padding:8px 10px;font-size:9pt;color:#959694;text-align:right}.editor-statusbar span{display:inline-block;min-width:4em;margin-left:1em}.editor-preview,.editor-preview-side{padding:10px;background:#fafafa;z-index:9999;overflow:auto;display:none;box-sizing:border-box}.editor-statusbar .lines:before{content:'lines: '}.editor-statusbar .words:before{content:'words: '}.editor-preview{position:absolute;width:100%;height:100%;top:0;left:0}.editor-preview-side{position:fixed;bottom:0;width:50%;top:50px;right:0;border:1px solid #ddd}.editor-preview-active,.editor-preview-active-side{display:block}.editor-preview-side>p,.editor-preview>p{margin-top:0}.editor-preview pre,.editor-preview-side pre{background:#eee;margin-bottom:10px}.editor-preview table td,.editor-preview table th,.editor-preview-side table td,.editor-preview-side table th{border:1px solid #ddd;padding:5px}.CodeMirror .CodeMirror-selected{background:#d9d9d9}.CodeMirror .CodeMirror-code .cm-header-1{font-size:200%;line-height:200%}.CodeMirror .CodeMirror-code .cm-header-2{font-size:160%;line-height:160%}.CodeMirror .CodeMirror-code .cm-header-3{font-size:125%;line-height:125%}.CodeMirror .CodeMirror-code .cm-header-4{font-size:110%;line-height:110%}.CodeMirror .CodeMirror-code .cm-comment{background:rgba(0,0,0,.05);border-radius:2px}.CodeMirror .CodeMirror-code .cm-link{color:#7f8c8d}.CodeMirror .CodeMirror-code .cm-url{color:#aab2b3}.CodeMirror .CodeMirror-code .cm-strikethrough{text-decoration:line-through}.CodeMirror .cm-spell-error:not(.cm-url):not(.cm-comment){background:rgba(255,0,0,.15)}
\ No newline at end of file
diff --git a/dist/simplemde.min.js b/dist/simplemde.min.js
deleted file mode 100644
index a755007..0000000
--- a/dist/simplemde.min.js
+++ /dev/null
@@ -1,13 +0,0 @@
-/**
- * simplemde v1.7.5
- * Copyright Next Step Webs, Inc.
- * @link https://github.com/NextStepWebs/simplemde-markdown-editor
- * @license MIT
- */
-function fixShortcut(e){return e=isMac?e.replace("Ctrl","Cmd"):e.replace("Cmd","Ctrl")}function createIcon(e,t){e=e||{};var n=document.createElement("a");return t=void 0==t?!0:t,e.title&&t&&(n.title=e.title,isMac&&(n.title=n.title.replace("Ctrl","⌘"),n.title=n.title.replace("Alt","⌥"))),n.className=e.className,n}function createSep(){return el=document.createElement("i"),el.className="separator",el.innerHTML="|",el}function getState(e,t){t=t||e.getCursor("start");var n=e.getTokenAt(t);if(!n.type)return{};for(var r,i,o=n.type.split(" "),l={},a=0;a<o.length;a++)r=o[a],"strong"===r?l.bold=!0:"variable-2"===r?(i=e.getLine(t.line),/^\s*\d+\.\s/.test(i)?l["ordered-list"]=!0:l["unordered-list"]=!0):"atom"===r?l.quote=!0:"em"===r?l.italic=!0:"quote"===r?l.quote=!0:"strikethrough"===r?l.strikethrough=!0:"comment"===r&&(l.code=!0);return l}function toggleFullScreen(e){var t=e.codemirror;t.setOption("fullScreen",!t.getOption("fullScreen")),t.getOption("fullScreen")?(saved_overflow=document.body.style.overflow,document.body.style.overflow="hidden"):document.body.style.overflow=saved_overflow;var n=t.getWrapperElement();/fullscreen/.test(n.previousSibling.className)?n.previousSibling.className=n.previousSibling.className.replace(/\s*fullscreen\b/,""):n.previousSibling.className+=" fullscreen";var r=e.toolbarElements.fullscreen;/active/.test(r.className)?r.className=r.className.replace(/\s*active\s*/g,""):r.className+=" active";var i=t.getWrapperElement().nextSibling;/editor-preview-active-side/.test(i.className)&&toggleSideBySide(e)}function toggleBold(e){_toggleBlock(e,"bold","**")}function toggleItalic(e){_toggleBlock(e,"italic","*")}function toggleStrikethrough(e){_toggleBlock(e,"strikethrough","~~")}function toggleCodeBlock(e){_toggleBlock(e,"code","```\r\n","\r\n```")}function toggleBlockquote(e){var t=e.codemirror;_toggleLine(t,"quote")}function toggleHeadingSmaller(e){var t=e.codemirror;_toggleHeading(t,"smaller")}function toggleHeadingBigger(e){var t=e.codemirror;_toggleHeading(t,"bigger")}function toggleHeading1(e){var t=e.codemirror;_toggleHeading(t,void 0,1)}function toggleHeading2(e){var t=e.codemirror;_toggleHeading(t,void 0,2)}function toggleHeading3(e){var t=e.codemirror;_toggleHeading(t,void 0,3)}function toggleUnorderedList(e){var t=e.codemirror;_toggleLine(t,"unordered-list")}function toggleOrderedList(e){var t=e.codemirror;_toggleLine(t,"ordered-list")}function drawLink(e){var t=e.codemirror,n=getState(t);_replaceSelection(t,n.link,"[","](http://)")}function drawImage(e){var t=e.codemirror,n=getState(t);_replaceSelection(t,n.image,"![](http://",")")}function drawHorizontalRule(e){var t=e.codemirror,n=getState(t);_replaceSelection(t,n.image,"","\n\n-----\n\n")}function undo(e){var t=e.codemirror;t.undo(),t.focus()}function redo(e){var t=e.codemirror;t.redo(),t.focus()}function toggleSideBySide(e){var t=e.codemirror,n=t.getWrapperElement(),r=(n.firstChild,n.nextSibling),i=e.toolbarElements["side-by-side"];/editor-preview-active-side/.test(r.className)?(r.className=r.className.replace(/\s*editor-preview-active-side\s*/g,""),i.className=i.className.replace(/\s*active\s*/g,""),n.className=n.className.replace(/\s*CodeMirror-sided\s*/g," ")):(setTimeout(function(){t.getOption("fullScreen")||toggleFullScreen(e),r.className+=" editor-preview-active-side"},1),i.className+=" active",n.className+=" CodeMirror-sided");var o=n.lastChild;if(/editor-preview-active/.test(o.className)){o.className=o.className.replace(/\s*editor-preview-active\s*/g,"");var l=e.toolbarElements.preview,a=n.previousSibling;l.className=l.className.replace(/\s*active\s*/g,""),a.className=a.className.replace(/\s*disabled-for-preview*/g,"")}r.innerHTML=e.options.previewRender(e.value(),r),t.on("update",function(){r.innerHTML=e.options.previewRender(e.value(),r)})}function togglePreview(e){var t=e.codemirror,n=t.getWrapperElement(),r=n.previousSibling,i=e.toolbarElements.preview,o=n.lastChild;o&&/editor-preview/.test(o.className)||(o=document.createElement("div"),o.className="editor-preview",n.appendChild(o)),/editor-preview-active/.test(o.className)?(o.className=o.className.replace(/\s*editor-preview-active\s*/g,""),i.className=i.className.replace(/\s*active\s*/g,""),r.className=r.className.replace(/\s*disabled-for-preview*/g,"")):(setTimeout(function(){o.className+=" editor-preview-active"},1),i.className+=" active",r.className+=" disabled-for-preview"),o.innerHTML=e.options.previewRender(e.value(),o);var l=t.getWrapperElement().nextSibling;/editor-preview-active-side/.test(l.className)&&toggleSideBySide(e)}function _replaceSelection(e,t,n,r){if(!/editor-preview-active/.test(e.getWrapperElement().lastChild.className)){var i,o=e.getCursor("start"),l=e.getCursor("end");t?(i=e.getLine(o.line),n=i.slice(0,o.ch),r=i.slice(o.ch),e.replaceRange(n+r,{line:o.line,ch:0})):(i=e.getSelection(),e.replaceSelection(n+i+r),o.ch+=n.length,o!==l&&(l.ch+=n.length)),e.setSelection(o,l),e.focus()}}function _toggleHeading(e,t,n){if(!/editor-preview-active/.test(e.getWrapperElement().lastChild.className)){for(var r=e.getCursor("start"),i=e.getCursor("end"),o=r.line;o<=i.line;o++)!function(r){var i=e.getLine(r),o=i.search(/[^#]/);i=void 0!==t?0>=o?"bigger"==t?"###### "+i:"# "+i:6==o&&"smaller"==t?i.substr(7):1==o&&"bigger"==t?i.substr(2):"bigger"==t?i.substr(1):"#"+i:1==n?0>=o?"# "+i:o==n?i.substr(o+1):"# "+i.substr(o+1):2==n?0>=o?"## "+i:o==n?i.substr(o+1):"## "+i.substr(o+1):0>=o?"### "+i:o==n?i.substr(o+1):"### "+i.substr(o+1),e.replaceRange(i,{line:r,ch:0},{line:r,ch:99999999999999})}(o);e.focus()}}function _toggleLine(e,t){if(!/editor-preview-active/.test(e.getWrapperElement().lastChild.className)){for(var n=getState(e),r=e.getCursor("start"),i=e.getCursor("end"),o={quote:/^(\s*)\>\s+/,"unordered-list":/^(\s*)(\*|\-|\+)\s+/,"ordered-list":/^(\s*)\d+\.\s+/},l={quote:"> ","unordered-list":"* ","ordered-list":"1. "},a=r.line;a<=i.line;a++)!function(r){var i=e.getLine(r);i=n[t]?i.replace(o[t],"$1"):l[t]+i,e.replaceRange(i,{line:r,ch:0},{line:r,ch:99999999999999})}(a);e.focus()}}function _toggleBlock(e,t,n,r){if(!/editor-preview-active/.test(e.codemirror.getWrapperElement().lastChild.className)){r="undefined"==typeof r?n:r;var i,o=e.codemirror,l=getState(o),a=n,s=r,u=o.getCursor("start"),c=o.getCursor("end");l[t]?(i=o.getLine(u.line),a=i.slice(0,u.ch),s=i.slice(u.ch),"bold"==t?(a=a.replace(/(\*\*|__)(?![\s\S]*(\*\*|__))/,""),s=s.replace(/(\*\*|__)/,"")):"italic"==t?(a=a.replace(/(\*|_)(?![\s\S]*(\*|_))/,""),s=s.replace(/(\*|_)/,"")):"strikethrough"==t&&(a=a.replace(/(\*\*|~~)(?![\s\S]*(\*\*|~~))/,""),s=s.replace(/(\*\*|~~)/,"")),o.replaceRange(a+s,{line:u.line,ch:0},{line:u.line,ch:99999999999999}),"bold"==t||"strikethrough"==t?(u.ch-=2,u!==c&&(c.ch-=2)):"italic"==t&&(u.ch-=1,u!==c&&(c.ch-=1))):(i=o.getSelection(),"bold"==t?(i=i.split("**").join(""),i=i.split("__").join("")):"italic"==t?(i=i.split("*").join(""),i=i.split("_").join("")):"strikethrough"==t&&(i=i.split("~~").join("")),o.replaceSelection(a+i+s),u.ch+=n.length,c.ch=u.ch+i.length),o.setSelection(u,c),o.focus()}}function wordCount(e){var t=/[a-zA-Z0-9_\u0392-\u03c9]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g,n=e.match(t),r=0;if(null===n)return r;for(var i=0;i<n.length;i++)r+=n[i].charCodeAt(0)>=19968?n[i].length:1;return r}function SimpleMDE(e){e=e||{},e.parent=this;var t=!0;if(e.autoDownloadFontAwesome===!1&&(t=!1),e.autoDownloadFontAwesome!==!0)for(var n=document.styleSheets,r=0;r<n.length;r++)n[r].href&&n[r].href.indexOf("//maxcdn.bootstrapcdn.com/font-awesome/")>-1&&(t=!1);if(t){var i=document.createElement("link");i.rel="stylesheet",i.href="https://maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css",document.getElementsByTagName("head")[0].appendChild(i)}if(e.element)this.element=e.element;else if(null===e.element)return void console.log("SimpleMDE: Error. No element was found.");e.toolbar!==!1&&(e.toolbar=e.toolbar||SimpleMDE.toolbar),e.hasOwnProperty("status")||(e.status=["autosave","lines","words","cursor"]),e.previewRender||(e.previewRender=function(e){return this.parent.markdown(e)}),e.parsingConfig=e.parsingConfig||{},this.options=e,this.render(),e.initialValue&&this.value(e.initialValue)}!function(e){if("object"==typeof exports&&"object"==typeof module)module.exports=e();else{if("function"==typeof define&&define.amd)return define([],e);this.CodeMirror=e()}}(function(){"use strict";function e(n,r){if(!(this instanceof e))return new e(n,r);this.options=r=r?Fi(r):{},Fi(Yo,r,!1),f(r);var i=r.value;"string"==typeof i&&(i=new xl(i,r.mode,null,r.lineSeparator)),this.doc=i;var o=new e.inputStyles[r.inputStyle](this),l=this.display=new t(n,i,o);l.wrapper.CodeMirror=this,u(this),a(this),r.lineWrapping&&(this.display.wrapper.className+=" CodeMirror-wrap"),r.autofocus&&!Mo&&l.input.focus(),v(this),this.state={keyMaps:[],overlays:[],modeGen:0,overwrite:!1,delayingBlurEvent:!1,focused:!1,suppressEdits:!1,pasteIncoming:!1,cutIncoming:!1,selectingText:!1,draggingText:!1,highlight:new Ai,keySeq:null,specialChars:null};var s=this;mo&&11>vo&&setTimeout(function(){s.display.input.reset(!0)},20),Rt(this),Ki(),bt(this),this.curOp.forceUpdate=!0,Xr(this,i),r.autofocus&&!Mo||s.hasFocus()?setTimeout(Pi(mn,this),20):vn(this);for(var c in Zo)Zo.hasOwnProperty(c)&&Zo[c](this,r[c],Qo);C(this),r.finishInit&&r.finishInit(this);for(var h=0;h<nl.length;++h)nl[h](this);wt(this),yo&&r.lineWrapping&&"optimizelegibility"==getComputedStyle(l.lineDiv).textRendering&&(l.lineDiv.style.textRendering="auto")}function t(e,t,n){var r=this;this.input=n,r.scrollbarFiller=Ri("div",null,"CodeMirror-scrollbar-filler"),r.scrollbarFiller.setAttribute("cm-not-content","true"),r.gutterFiller=Ri("div",null,"CodeMirror-gutter-filler"),r.gutterFiller.setAttribute("cm-not-content","true"),r.lineDiv=Ri("div",null,"CodeMirror-code"),r.selectionDiv=Ri("div",null,null,"position: relative; z-index: 1"),r.cursorDiv=Ri("div",null,"CodeMirror-cursors"),r.measure=Ri("div",null,"CodeMirror-measure"),r.lineMeasure=Ri("div",null,"CodeMirror-measure"),r.lineSpace=Ri("div",[r.measure,r.lineMeasure,r.selectionDiv,r.cursorDiv,r.lineDiv],null,"position: relative; outline: none"),r.mover=Ri("div",[Ri("div",[r.lineSpace],"CodeMirror-lines")],null,"position: relative"),r.sizer=Ri("div",[r.mover],"CodeMirror-sizer"),r.sizerWidth=null,r.heightForcer=Ri("div",null,null,"position: absolute; height: "+Hl+"px; width: 1px;"),r.gutters=Ri("div",null,"CodeMirror-gutters"),r.lineGutter=null,r.scroller=Ri("div",[r.sizer,r.heightForcer,r.gutters],"CodeMirror-scroll"),r.scroller.setAttribute("tabIndex","-1"),r.wrapper=Ri("div",[r.scrollbarFiller,r.gutterFiller,r.scroller],"CodeMirror"),mo&&8>vo&&(r.gutters.style.zIndex=-1,r.scroller.style.paddingRight=0),yo||fo&&Mo||(r.scroller.draggable=!0),e&&(e.appendChild?e.appendChild(r.wrapper):e(r.wrapper)),r.viewFrom=r.viewTo=t.first,r.reportedViewFrom=r.reportedViewTo=t.first,r.view=[],r.renderedView=null,r.externalMeasured=null,r.viewOffset=0,r.lastWrapHeight=r.lastWrapWidth=0,r.updateLineNumbers=null,r.nativeBarWidth=r.barHeight=r.barWidth=0,r.scrollbarsClipped=!1,r.lineNumWidth=r.lineNumInnerWidth=r.lineNumChars=null,r.alignWidgets=!1,r.cachedCharWidth=r.cachedTextHeight=r.cachedPaddingH=null,r.maxLine=null,r.maxLineLength=0,r.maxLineChanged=!1,r.wheelDX=r.wheelDY=r.wheelStartX=r.wheelStartY=null,r.shift=!1,r.selForContextMenu=null,r.activeTouch=null,n.init(r)}function n(t){t.doc.mode=e.getMode(t.options,t.doc.modeOption),r(t)}function r(e){e.doc.iter(function(e){e.stateAfter&&(e.stateAfter=null),e.styles&&(e.styles=null)}),e.doc.frontier=e.doc.first,Be(e,100),e.state.modeGen++,e.curOp&&Wt(e)}function i(e){e.options.lineWrapping?(Kl(e.display.wrapper,"CodeMirror-wrap"),e.display.sizer.style.minWidth="",e.display.sizerWidth=null):(Vl(e.display.wrapper,"CodeMirror-wrap"),d(e)),l(e),Wt(e),lt(e),setTimeout(function(){y(e)},100)}function o(e){var t=vt(e.display),n=e.options.lineWrapping,r=n&&Math.max(5,e.display.scroller.clientWidth/yt(e.display)-3);return function(i){if(wr(e.doc,i))return 0;var o=0;if(i.widgets)for(var l=0;l<i.widgets.length;l++)i.widgets[l].height&&(o+=i.widgets[l].height);return n?o+(Math.ceil(i.text.length/r)||1)*t:o+t}}function l(e){var t=e.doc,n=o(e);t.iter(function(e){var t=n(e);t!=e.height&&Jr(e,t)})}function a(e){e.display.wrapper.className=e.display.wrapper.className.replace(/\s*cm-s-\S+/g,"")+e.options.theme.replace(/(^|\s)\s*/g," cm-s-"),lt(e)}function s(e){u(e),Wt(e),setTimeout(function(){w(e)},20)}function u(e){var t=e.display.gutters,n=e.options.gutters;qi(t);for(var r=0;r<n.length;++r){var i=n[r],o=t.appendChild(Ri("div",null,"CodeMirror-gutter "+i));"CodeMirror-linenumbers"==i&&(e.display.lineGutter=o,o.style.width=(e.display.lineNumWidth||1)+"px")}t.style.display=r?"":"none",c(e)}function c(e){var t=e.display.gutters.offsetWidth;e.display.sizer.style.marginLeft=t+"px"}function h(e){if(0==e.height)return 0;for(var t,n=e.text.length,r=e;t=pr(r);){var i=t.find(0,!0);r=i.from.line,n+=i.from.ch-i.to.ch}for(r=e;t=gr(r);){var i=t.find(0,!0);n-=r.text.length-i.from.ch,r=i.to.line,n+=r.text.length-i.to.ch}return n}function d(e){var t=e.display,n=e.doc;t.maxLine=Yr(n,n.first),t.maxLineLength=h(t.maxLine),t.maxLineChanged=!0,n.iter(function(e){var n=h(e);n>t.maxLineLength&&(t.maxLineLength=n,t.maxLine=e)})}function f(e){var t=Oi(e.gutters,"CodeMirror-linenumbers");-1==t&&e.lineNumbers?e.gutters=e.gutters.concat(["CodeMirror-linenumbers"]):t>-1&&!e.lineNumbers&&(e.gutters=e.gutters.slice(0),e.gutters.splice(t,1))}function p(e){var t=e.display,n=t.gutters.offsetWidth,r=Math.round(e.doc.height+Ue(e.display));return{clientHeight:t.scroller.clientHeight,viewHeight:t.wrapper.clientHeight,scrollWidth:t.scroller.scrollWidth,clientWidth:t.scroller.clientWidth,viewWidth:t.wrapper.clientWidth,barLeft:e.options.fixedGutter?n:0,docHeight:r,scrollHeight:r+je(e)+t.barHeight,nativeBarWidth:t.nativeBarWidth,gutterWidth:n}}function g(e,t,n){this.cm=n;var r=this.vert=Ri("div",[Ri("div",null,null,"min-width: 1px")],"CodeMirror-vscrollbar"),i=this.horiz=Ri("div",[Ri("div",null,null,"height: 100%; min-height: 1px")],"CodeMirror-hscrollbar");e(r),e(i),Ml(r,"scroll",function(){r.clientHeight&&t(r.scrollTop,"vertical")}),Ml(i,"scroll",function(){i.clientWidth&&t(i.scrollLeft,"horizontal")}),this.checkedOverlay=!1,mo&&8>vo&&(this.horiz.style.minHeight=this.vert.style.minWidth="18px")}function m(){}function v(t){t.display.scrollbars&&(t.display.scrollbars.clear(),t.display.scrollbars.addClass&&Vl(t.display.wrapper,t.display.scrollbars.addClass)),t.display.scrollbars=new e.scrollbarModel[t.options.scrollbarStyle](function(e){t.display.wrapper.insertBefore(e,t.display.scrollbarFiller),Ml(e,"mousedown",function(){t.state.focused&&setTimeout(function(){t.display.input.focus()},0)}),e.setAttribute("cm-not-content","true")},function(e,n){"horizontal"==n?rn(t,e):nn(t,e)},t),t.display.scrollbars.addClass&&Kl(t.display.wrapper,t.display.scrollbars.addClass)}function y(e,t){t||(t=p(e));var n=e.display.barWidth,r=e.display.barHeight;b(e,t);for(var i=0;4>i&&n!=e.display.barWidth||r!=e.display.barHeight;i++)n!=e.display.barWidth&&e.options.lineWrapping&&H(e),b(e,p(e)),n=e.display.barWidth,r=e.display.barHeight}function b(e,t){var n=e.display,r=n.scrollbars.update(t);n.sizer.style.paddingRight=(n.barWidth=r.right)+"px",n.sizer.style.paddingBottom=(n.barHeight=r.bottom)+"px",r.right&&r.bottom?(n.scrollbarFiller.style.display="block",n.scrollbarFiller.style.height=r.bottom+"px",n.scrollbarFiller.style.width=r.right+"px"):n.scrollbarFiller.style.display="",r.bottom&&e.options.coverGutterNextToScrollbar&&e.options.fixedGutter?(n.gutterFiller.style.display="block",n.gutterFiller.style.height=r.bottom+"px",n.gutterFiller.style.width=t.gutterWidth+"px"):n.gutterFiller.style.display=""}function x(e,t,n){var r=n&&null!=n.top?Math.max(0,n.top):e.scroller.scrollTop;r=Math.floor(r-qe(e));var i=n&&null!=n.bottom?n.bottom:r+e.wrapper.clientHeight,o=ti(t,r),l=ti(t,i);if(n&&n.ensure){var a=n.ensure.from.line,s=n.ensure.to.line;o>a?(o=a,l=ti(t,ni(Yr(t,a))+e.wrapper.clientHeight)):Math.min(s,t.lastLine())>=l&&(o=ti(t,ni(Yr(t,s))-e.wrapper.clientHeight),l=s)}return{from:o,to:Math.max(l,o+1)}}function w(e){var t=e.display,n=t.view;if(t.alignWidgets||t.gutters.firstChild&&e.options.fixedGutter){for(var r=k(t)-t.scroller.scrollLeft+e.doc.scrollLeft,i=t.gutters.offsetWidth,o=r+"px",l=0;l<n.length;l++)if(!n[l].hidden){e.options.fixedGutter&&n[l].gutter&&(n[l].gutter.style.left=o);var a=n[l].alignable;if(a)for(var s=0;s<a.length;s++)a[s].style.left=o}e.options.fixedGutter&&(t.gutters.style.left=r+i+"px")}}function C(e){if(!e.options.lineNumbers)return!1;var t=e.doc,n=S(e.options,t.first+t.size-1),r=e.display;if(n.length!=r.lineNumChars){var i=r.measure.appendChild(Ri("div",[Ri("div",n)],"CodeMirror-linenumber CodeMirror-gutter-elt")),o=i.firstChild.offsetWidth,l=i.offsetWidth-o;return r.lineGutter.style.width="",r.lineNumInnerWidth=Math.max(o,r.lineGutter.offsetWidth-l)+1,r.lineNumWidth=r.lineNumInnerWidth+l,r.lineNumChars=r.lineNumInnerWidth?n.length:-1,r.lineGutter.style.width=r.lineNumWidth+"px",c(e),!0}return!1}function S(e,t){return String(e.lineNumberFormatter(t+e.firstLineNumber))}function k(e){return e.scroller.getBoundingClientRect().left-e.sizer.getBoundingClientRect().left}function L(e,t,n){var r=e.display;this.viewport=t,this.visible=x(r,e.doc,t),this.editorIsHidden=!r.wrapper.offsetWidth,this.wrapperHeight=r.wrapper.clientHeight,this.wrapperWidth=r.wrapper.clientWidth,this.oldDisplayWidth=$e(e),this.force=n,this.dims=E(e),this.events=[]}function M(e){var t=e.display;!t.scrollbarsClipped&&t.scroller.offsetWidth&&(t.nativeBarWidth=t.scroller.offsetWidth-t.scroller.clientWidth,t.heightForcer.style.height=je(e)+"px",t.sizer.style.marginBottom=-t.nativeBarWidth+"px",t.sizer.style.borderRightWidth=je(e)+"px",t.scrollbarsClipped=!0)}function T(e,t){var n=e.display,r=e.doc;if(t.editorIsHidden)return Ft(e),!1;if(!t.force&&t.visible.from>=n.viewFrom&&t.visible.to<=n.viewTo&&(null==n.updateLineNumbers||n.updateLineNumbers>=n.viewTo)&&n.renderedView==n.view&&0==_t(e))return!1;C(e)&&(Ft(e),t.dims=E(e));var i=r.first+r.size,o=Math.max(t.visible.from-e.options.viewportMargin,r.first),l=Math.min(i,t.visible.to+e.options.viewportMargin);n.viewFrom<o&&o-n.viewFrom<20&&(o=Math.max(r.first,n.viewFrom)),n.viewTo>l&&n.viewTo-l<20&&(l=Math.min(i,n.viewTo)),Eo&&(o=br(e.doc,o),l=xr(e.doc,l));var a=o!=n.viewFrom||l!=n.viewTo||n.lastWrapHeight!=t.wrapperHeight||n.lastWrapWidth!=t.wrapperWidth;zt(e,o,l),n.viewOffset=ni(Yr(e.doc,n.viewFrom)),e.display.mover.style.top=n.viewOffset+"px";var s=_t(e);if(!a&&0==s&&!t.force&&n.renderedView==n.view&&(null==n.updateLineNumbers||n.updateLineNumbers>=n.viewTo))return!1;var u=Gi();return s>4&&(n.lineDiv.style.display="none"),W(e,n.updateLineNumbers,t.dims),s>4&&(n.lineDiv.style.display=""),n.renderedView=n.view,u&&Gi()!=u&&u.offsetHeight&&u.focus(),qi(n.cursorDiv),qi(n.selectionDiv),n.gutters.style.height=n.sizer.style.minHeight=0,a&&(n.lastWrapHeight=t.wrapperHeight,n.lastWrapWidth=t.wrapperWidth,Be(e,400)),n.updateLineNumbers=null,!0}function N(e,t){for(var n=t.viewport,r=!0;(r&&e.options.lineWrapping&&t.oldDisplayWidth!=$e(e)||(n&&null!=n.top&&(n={top:Math.min(e.doc.height+Ue(e.display)-Ve(e),n.top)}),t.visible=x(e.display,e.doc,n),!(t.visible.from>=e.display.viewFrom&&t.visible.to<=e.display.viewTo)))&&T(e,t);r=!1){H(e);var i=p(e);Ee(e),D(e,i),y(e,i)}t.signal(e,"update",e),(e.display.viewFrom!=e.display.reportedViewFrom||e.display.viewTo!=e.display.reportedViewTo)&&(t.signal(e,"viewportChange",e,e.display.viewFrom,e.display.viewTo),e.display.reportedViewFrom=e.display.viewFrom,e.display.reportedViewTo=e.display.viewTo)}function A(e,t){var n=new L(e,t);if(T(e,n)){H(e),N(e,n);var r=p(e);Ee(e),D(e,r),y(e,r),n.finish()}}function D(e,t){e.display.sizer.style.minHeight=t.docHeight+"px";var n=t.docHeight+e.display.barHeight;e.display.heightForcer.style.top=n+"px",e.display.gutters.style.height=Math.max(n+je(e),t.clientHeight)+"px"}function H(e){for(var t=e.display,n=t.lineDiv.offsetTop,r=0;r<t.view.length;r++){var i,o=t.view[r];if(!o.hidden){if(mo&&8>vo){var l=o.node.offsetTop+o.node.offsetHeight;i=l-n,n=l}else{var a=o.node.getBoundingClientRect();i=a.bottom-a.top}var s=o.line.height-i;if(2>i&&(i=vt(t)),(s>.001||-.001>s)&&(Jr(o.line,i),O(o.line),o.rest))for(var u=0;u<o.rest.length;u++)O(o.rest[u])}}}function O(e){if(e.widgets)for(var t=0;t<e.widgets.length;++t)e.widgets[t].height=e.widgets[t].node.offsetHeight}function E(e){for(var t=e.display,n={},r={},i=t.gutters.clientLeft,o=t.gutters.firstChild,l=0;o;o=o.nextSibling,++l)n[e.options.gutters[l]]=o.offsetLeft+o.clientLeft+i,r[e.options.gutters[l]]=o.clientWidth;return{fixedPos:k(t),gutterTotalWidth:t.gutters.offsetWidth,gutterLeft:n,gutterWidth:r,wrapperWidth:t.wrapper.clientWidth}}function W(e,t,n){function r(t){var n=t.nextSibling;return yo&&To&&e.display.currentWheelTarget==t?t.style.display="none":t.parentNode.removeChild(t),n}for(var i=e.display,o=e.options.lineNumbers,l=i.lineDiv,a=l.firstChild,s=i.view,u=i.viewFrom,c=0;c<s.length;c++){var h=s[c];if(h.hidden);else if(h.node&&h.node.parentNode==l){for(;a!=h.node;)a=r(a);var d=o&&null!=t&&u>=t&&h.lineNumber;h.changes&&(Oi(h.changes,"gutter")>-1&&(d=!1),I(e,h,u,n)),d&&(qi(h.lineNumber),h.lineNumber.appendChild(document.createTextNode(S(e.options,u)))),a=h.node.nextSibling}else{var f=U(e,h,u,n);l.insertBefore(f,a)}u+=h.size}for(;a;)a=r(a)}function I(e,t,n,r){for(var i=0;i<t.changes.length;i++){var o=t.changes[i];"text"==o?z(e,t):"gutter"==o?R(e,t,n,r):"class"==o?_(t):"widget"==o&&q(e,t,r)}t.changes=null}function F(e){return e.node==e.text&&(e.node=Ri("div",null,null,"position: relative"),e.text.parentNode&&e.text.parentNode.replaceChild(e.node,e.text),e.node.appendChild(e.text),mo&&8>vo&&(e.node.style.zIndex=2)),e.node}function P(e){var t=e.bgClass?e.bgClass+" "+(e.line.bgClass||""):e.line.bgClass;if(t&&(t+=" CodeMirror-linebackground"),e.background)t?e.background.className=t:(e.background.parentNode.removeChild(e.background),e.background=null);else if(t){var n=F(e);e.background=n.insertBefore(Ri("div",null,t),n.firstChild)}}function B(e,t){var n=e.display.externalMeasured;return n&&n.line==t.line?(e.display.externalMeasured=null,t.measure=n.measure,n.built):Pr(e,t)}function z(e,t){var n=t.text.className,r=B(e,t);t.text==t.node&&(t.node=r.pre),t.text.parentNode.replaceChild(r.pre,t.text),t.text=r.pre,r.bgClass!=t.bgClass||r.textClass!=t.textClass?(t.bgClass=r.bgClass,t.textClass=r.textClass,_(t)):n&&(t.text.className=n)}function _(e){P(e),e.line.wrapClass?F(e).className=e.line.wrapClass:e.node!=e.text&&(e.node.className="");var t=e.textClass?e.textClass+" "+(e.line.textClass||""):e.line.textClass;e.text.className=t||""}function R(e,t,n,r){if(t.gutter&&(t.node.removeChild(t.gutter),t.gutter=null),t.gutterBackground&&(t.node.removeChild(t.gutterBackground),t.gutterBackground=null),t.line.gutterClass){var i=F(t);t.gutterBackground=Ri("div",null,"CodeMirror-gutter-background "+t.line.gutterClass,"left: "+(e.options.fixedGutter?r.fixedPos:-r.gutterTotalWidth)+"px; width: "+r.gutterTotalWidth+"px"),i.insertBefore(t.gutterBackground,t.text)}var o=t.line.gutterMarkers;if(e.options.lineNumbers||o){var i=F(t),l=t.gutter=Ri("div",null,"CodeMirror-gutter-wrapper","left: "+(e.options.fixedGutter?r.fixedPos:-r.gutterTotalWidth)+"px");if(e.display.input.setUneditable(l),i.insertBefore(l,t.text),t.line.gutterClass&&(l.className+=" "+t.line.gutterClass),!e.options.lineNumbers||o&&o["CodeMirror-linenumbers"]||(t.lineNumber=l.appendChild(Ri("div",S(e.options,n),"CodeMirror-linenumber CodeMirror-gutter-elt","left: "+r.gutterLeft["CodeMirror-linenumbers"]+"px; width: "+e.display.lineNumInnerWidth+"px"))),o)for(var a=0;a<e.options.gutters.length;++a){var s=e.options.gutters[a],u=o.hasOwnProperty(s)&&o[s];u&&l.appendChild(Ri("div",[u],"CodeMirror-gutter-elt","left: "+r.gutterLeft[s]+"px; width: "+r.gutterWidth[s]+"px"))}}}function q(e,t,n){t.alignable&&(t.alignable=null);for(var r,i=t.node.firstChild;i;i=r){var r=i.nextSibling;"CodeMirror-linewidget"==i.className&&t.node.removeChild(i)}G(e,t,n)}function U(e,t,n,r){var i=B(e,t);return 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a="",s=!1,u=e.doc.lineSeparator();l(t),t!=n;)t=t.nextSibling;return a}function he(e,t){this.ranges=e,this.primIndex=t}function de(e,t){this.anchor=e,this.head=t}function fe(e,t){var n=e[t];e.sort(function(e,t){return Io(e.from(),t.from())}),t=Oi(e,n);for(var r=1;r<e.length;r++){var i=e[r],o=e[r-1];if(Io(o.to(),i.from())>=0){var l=X(o.from(),i.from()),a=K(o.to(),i.to()),s=o.empty()?i.from()==i.head:o.from()==o.head;t>=r&&--t,e.splice(--r,2,new de(s?a:l,s?l:a))}}return new he(e,t)}function pe(e,t){return new he([new de(e,t||e)],0)}function ge(e,t){return Math.max(e.first,Math.min(t,e.first+e.size-1))}function me(e,t){if(t.line<e.first)return Wo(e.first,0);var n=e.first+e.size-1;return t.line>n?Wo(n,Yr(e,n).text.length):ve(t,Yr(e,t.line).text.length)}function ve(e,t){var n=e.ch;return null==n||n>t?Wo(e.line,t):0>n?Wo(e.line,0):e}function ye(e,t){return t>=e.first&&t<e.first+e.size}function be(e,t){for(var n=[],r=0;r<t.length;r++)n[r]=me(e,t[r]);return n}function xe(e,t,n,r){if(e.cm&&e.cm.display.shift||e.extend){var i=t.anchor;if(r){var o=Io(n,i)<0;o!=Io(r,i)<0?(i=n,n=r):o!=Io(n,r)<0&&(n=r)}return new de(i,n)}return new de(r||n,n)}function we(e,t,n,r){Te(e,new he([xe(e,e.sel.primary(),t,n)],0),r)}function Ce(e,t,n){for(var r=[],i=0;i<e.sel.ranges.length;i++)r[i]=xe(e,e.sel.ranges[i],t[i],null);var o=fe(r,e.sel.primIndex);Te(e,o,n)}function Se(e,t,n,r){var i=e.sel.ranges.slice(0);i[t]=n,Te(e,fe(i,e.sel.primIndex),r)}function ke(e,t,n,r){Te(e,pe(t,n),r)}function Le(e,t){var n={ranges:t.ranges,update:function(t){this.ranges=[];for(var n=0;n<t.length;n++)this.ranges[n]=new de(me(e,t[n].anchor),me(e,t[n].head))}};return Al(e,"beforeSelectionChange",e,n),e.cm&&Al(e.cm,"beforeSelectionChange",e.cm,n),n.ranges!=t.ranges?fe(n.ranges,n.ranges.length-1):t}function Me(e,t,n){var r=e.history.done,i=Hi(r);i&&i.ranges?(r[r.length-1]=t,Ne(e,t,n)):Te(e,t,n)}function Te(e,t,n){Ne(e,t,n),ci(e,e.sel,e.cm?e.cm.curOp.id:NaN,n)}function 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h=c.find(0>l?-1:1);if(0==Io(h,o)&&(h.ch+=l,h.ch<0?h=h.line>e.first?me(e,Wo(h.line-1)):null:h.ch>a.text.length&&(h=h.line<e.first+e.size-1?Wo(h.line+1,0):null),!h)){if(i)return r?(e.cantEdit=!0,Wo(e.first,0)):Oe(e,t,n,!0);i=!0,h=t,l=-l}o=h;continue e}}return o}}function Ee(e){e.display.input.showSelection(e.display.input.prepareSelection())}function We(e,t){for(var n=e.doc,r={},i=r.cursors=document.createDocumentFragment(),o=r.selection=document.createDocumentFragment(),l=0;l<n.sel.ranges.length;l++)if(t!==!1||l!=n.sel.primIndex){var a=n.sel.ranges[l],s=a.empty();(s||e.options.showCursorWhenSelecting)&&Ie(e,a.head,i),s||Fe(e,a,o)}return r}function Ie(e,t,n){var r=dt(e,t,"div",null,null,!e.options.singleCursorHeightPerLine),i=n.appendChild(Ri("div"," ","CodeMirror-cursor"));if(i.style.left=r.left+"px",i.style.top=r.top+"px",i.style.height=Math.max(0,r.bottom-r.top)*e.options.cursorHeight+"px",r.other){var o=n.appendChild(Ri("div"," ","CodeMirror-cursor 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o=e.display,l=e.doc,a=document.createDocumentFragment(),s=Ge(e.display),u=s.left,c=Math.max(o.sizerWidth,$e(e)-o.sizer.offsetLeft)-s.right,h=t.from(),d=t.to();if(h.line==d.line)i(h.line,h.ch,d.ch);else{var f=Yr(l,h.line),p=Yr(l,d.line),g=vr(f)==vr(p),m=i(h.line,h.ch,g?f.text.length+1:null).end,v=i(d.line,g?0:null,d.ch).start;g&&(m.top<v.top-2?(r(m.right,m.top,null,m.bottom),r(u,v.top,v.left,v.bottom)):r(m.right,m.top,v.left-m.right,m.bottom)),m.bottom<v.top&&r(u,m.bottom,null,v.top)}n.appendChild(a)}function Pe(e){if(e.state.focused){var t=e.display;clearInterval(t.blinker);var n=!0;t.cursorDiv.style.visibility="",e.options.cursorBlinkRate>0?t.blinker=setInterval(function(){t.cursorDiv.style.visibility=(n=!n)?"":"hidden"},e.options.cursorBlinkRate):e.options.cursorBlinkRate<0&&(t.cursorDiv.style.visibility="hidden")}}function Be(e,t){e.doc.mode.startState&&e.doc.frontier<e.display.viewTo&&e.state.highlight.set(t,Pi(ze,e))}function ze(e){var t=e.doc;if(t.frontier<t.first&&(t.frontier=t.first),!(t.frontier>=e.display.viewTo)){var n=+new Date+e.options.workTime,r=il(t.mode,Re(e,t.frontier)),i=[];t.iter(t.frontier,Math.min(t.first+t.size,e.display.viewTo+500),function(o){if(t.frontier>=e.display.viewFrom){var l=o.styles,a=o.text.length>e.options.maxHighlightLength,s=Er(e,o,a?il(t.mode,r):r,!0);o.styles=s.styles;var u=o.styleClasses,c=s.classes;c?o.styleClasses=c:u&&(o.styleClasses=null);for(var h=!l||l.length!=o.styles.length||u!=c&&(!u||!c||u.bgClass!=c.bgClass||u.textClass!=c.textClass),d=0;!h&&d<l.length;++d)h=l[d]!=o.styles[d];h&&i.push(t.frontier),o.stateAfter=a?r:il(t.mode,r)}else o.text.length<=e.options.maxHighlightLength&&Ir(e,o.text,r),o.stateAfter=t.frontier%5==0?il(t.mode,r):null;return++t.frontier,+new Date>n?(Be(e,e.options.workDelay),!0):void 0}),i.length&&Nt(e,function(){for(var t=0;t<i.length;t++)It(e,i[t],"text")})}}function _e(e,t,n){for(var 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$e(e){return e.display.scroller.clientWidth-je(e)-e.display.barWidth}function Ve(e){return e.display.scroller.clientHeight-je(e)-e.display.barHeight}function Ke(e,t,n){var r=e.options.lineWrapping,i=r&&$e(e);if(!t.measure.heights||r&&t.measure.width!=i){var o=t.measure.heights=[];if(r){t.measure.width=i;for(var l=t.text.firstChild.getClientRects(),a=0;a<l.length-1;a++){var s=l[a],u=l[a+1];Math.abs(s.bottom-u.bottom)>2&&o.push((s.bottom+u.top)/2-n.top)}}o.push(n.bottom-n.top)}}function Xe(e,t,n){if(e.line==t)return{map:e.measure.map,cache:e.measure.cache};for(var r=0;r<e.rest.length;r++)if(e.rest[r]==t)return{map:e.measure.maps[r],cache:e.measure.caches[r]};for(var r=0;r<e.rest.length;r++)if(ei(e.rest[r])>n)return{map:e.measure.maps[r],cache:e.measure.caches[r],before:!0}}function Ye(e,t){t=vr(t);var n=ei(t),r=e.display.externalMeasured=new Ot(e.doc,t,n);r.lineN=n;var i=r.built=Pr(e,r);return r.text=i.pre,Ui(e.display.lineMeasure,i.pre),r}function Ze(e,t,n,r){return et(e,Je(e,t),n,r)}function Qe(e,t){if(t>=e.display.viewFrom&&t<e.display.viewTo)return e.display.view[Pt(e,t)];var n=e.display.externalMeasured;return n&&t>=n.lineN&&t<n.lineN+n.size?n:void 0}function Je(e,t){var n=ei(t),r=Qe(e,n);r&&!r.text?r=null:r&&r.changes&&(I(e,r,n,E(e)),e.curOp.forceUpdate=!0),r||(r=Ye(e,t));var i=Xe(r,t,n);return{line:t,view:r,rect:null,map:i.map,cache:i.cache,before:i.before,hasHeights:!1}}function et(e,t,n,r,i){t.before&&(n=-1);var o,l=n+(r||"");return t.cache.hasOwnProperty(l)?o=t.cache[l]:(t.rect||(t.rect=t.view.text.getBoundingClientRect()),t.hasHeights||(Ke(e,t.view,t.rect),t.hasHeights=!0),o=nt(e,t,n,r),o.bogus||(t.cache[l]=o)),{left:o.left,right:o.right,top:i?o.rtop:o.top,bottom:i?o.rbottom:o.bottom}}function tt(e,t,n){for(var r,i,o,l,a=0;a<e.length;a+=3){var s=e[a],u=e[a+1];if(s>t?(i=0,o=1,l="left"):u>t?(i=t-s,o=i+1):(a==e.length-3||t==u&&e[a+3]>t)&&(o=u-s,i=o-1,t>=u&&(l="right")),null!=i){if(r=e[a+2],s==u&&n==(r.insertLeft?"left":"right")&&(l=n),"left"==n&&0==i)for(;a&&e[a-2]==e[a-3]&&e[a-1].insertLeft;)r=e[(a-=3)+2],l="left";if("right"==n&&i==u-s)for(;a<e.length-3&&e[a+3]==e[a+4]&&!e[a+5].insertLeft;)r=e[(a+=3)+2],l="right";break}}return{node:r,start:i,end:o,collapse:l,coverStart:s,coverEnd:u}}function nt(e,t,n,r){var i,o=tt(t.map,n,r),l=o.node,a=o.start,s=o.end,u=o.collapse;if(3==l.nodeType){for(var c=0;4>c;c++){for(;a&&_i(t.line.text.charAt(o.coverStart+a));)--a;for(;o.coverStart+s<o.coverEnd&&_i(t.line.text.charAt(o.coverStart+s));)++s;if(mo&&9>vo&&0==a&&s==o.coverEnd-o.coverStart)i=l.parentNode.getBoundingClientRect();else if(mo&&e.options.lineWrapping){var h=_l(l,a,s).getClientRects();i=h.length?h["right"==r?h.length-1:0]:_o}else i=_l(l,a,s).getBoundingClientRect()||_o;if(i.left||i.right||0==a)break;s=a,a-=1,u="right"}mo&&11>vo&&(i=rt(e.display.measure,i))}else{a>0&&(u=r="right");var h;i=e.options.lineWrapping&&(h=l.getClientRects()).length>1?h["right"==r?h.length-1:0]:l.getBoundingClientRect()}if(mo&&9>vo&&!a&&(!i||!i.left&&!i.right)){var d=l.parentNode.getClientRects()[0];i=d?{left:d.left,right:d.left+yt(e.display),top:d.top,bottom:d.bottom}:_o}for(var f=i.top-t.rect.top,p=i.bottom-t.rect.top,g=(f+p)/2,m=t.view.measure.heights,c=0;c<m.length-1&&!(g<m[c]);c++);var v=c?m[c-1]:0,y=m[c],b={left:("right"==u?i.right:i.left)-t.rect.left,right:("left"==u?i.left:i.right)-t.rect.left,top:v,bottom:y};return i.left||i.right||(b.bogus=!0),e.options.singleCursorHeightPerLine||(b.rtop=f,b.rbottom=p),b}function rt(e,t){if(!window.screen||null==screen.logicalXDPI||screen.logicalXDPI==screen.deviceXDPI||!Qi(e))return t;var n=screen.logicalXDPI/screen.deviceXDPI,r=screen.logicalYDPI/screen.deviceYDPI;return{left:t.left*n,right:t.right*n,top:t.top*r,bottom:t.bottom*r}}function it(e){if(e.measure&&(e.measure.cache={},e.measure.heights=null,e.rest))for(var t=0;t<e.rest.length;t++)e.measure.caches[t]={}}function ot(e){e.display.externalMeasure=null,qi(e.display.lineMeasure);for(var t=0;t<e.display.view.length;t++)it(e.display.view[t])}function lt(e){ot(e),e.display.cachedCharWidth=e.display.cachedTextHeight=e.display.cachedPaddingH=null,e.options.lineWrapping||(e.display.maxLineChanged=!0),e.display.lineNumChars=null}function at(){return window.pageXOffset||(document.documentElement||document.body).scrollLeft}function st(){return window.pageYOffset||(document.documentElement||document.body).scrollTop}function ut(e,t,n,r){if(t.widgets)for(var i=0;i<t.widgets.length;++i)if(t.widgets[i].above){var o=kr(t.widgets[i]);n.top+=o,n.bottom+=o}if("line"==r)return n;r||(r="local");var l=ni(t);if("local"==r?l+=qe(e.display):l-=e.display.viewOffset,"page"==r||"window"==r){var a=e.display.lineSpace.getBoundingClientRect();l+=a.top+("window"==r?0:st());var s=a.left+("window"==r?0:at());n.left+=s,n.right+=s}return n.top+=l,n.bottom+=l,n}function ct(e,t,n){if("div"==n)return t;var r=t.left,i=t.top;if("page"==n)r-=at(),i-=st();else if("local"==n||!n){var o=e.display.sizer.getBoundingClientRect();r+=o.left,i+=o.top}var l=e.display.lineSpace.getBoundingClientRect();return{left:r-l.left,top:i-l.top}}function ht(e,t,n,r,i){return r||(r=Yr(e.doc,t.line)),ut(e,r,Ze(e,r,t.ch,i),n)}function dt(e,t,n,r,i,o){function l(t,l){var a=et(e,i,t,l?"right":"left",o);return l?a.left=a.right:a.right=a.left,ut(e,r,a,n)}function a(e,t){var n=s[t],r=n.level%2;return e==eo(n)&&t&&n.level<s[t-1].level?(n=s[--t],e=to(n)-(n.level%2?0:1),r=!0):e==to(n)&&t<s.length-1&&n.level<s[t+1].level&&(n=s[++t],e=eo(n)-n.level%2,r=!1),r&&e==n.to&&e>n.from?l(e-1):l(e,r)}r=r||Yr(e.doc,t.line),i||(i=Je(e,r));var s=ri(r),u=t.ch;if(!s)return l(u);var c=so(s,u),h=a(u,c);return null!=na&&(h.other=a(u,na)),h}function ft(e,t){var n=0,t=me(e.doc,t);e.options.lineWrapping||(n=yt(e.display)*t.ch);var r=Yr(e.doc,t.line),i=ni(r)+qe(e.display);return{left:n,right:n,top:i,bottom:i+r.height}}function pt(e,t,n,r){var i=Wo(e,t);return i.xRel=r,n&&(i.outside=!0),i}function gt(e,t,n){var r=e.doc;if(n+=e.display.viewOffset,0>n)return pt(r.first,0,!0,-1);var i=ti(r,n),o=r.first+r.size-1;if(i>o)return pt(r.first+r.size-1,Yr(r,o).text.length,!0,1);0>t&&(t=0);for(var l=Yr(r,i);;){var a=mt(e,l,i,t,n),s=gr(l),u=s&&s.find(0,!0);if(!s||!(a.ch>u.from.ch||a.ch==u.from.ch&&a.xRel>0))return a;i=ei(l=u.to.line)}}function mt(e,t,n,r,i){function o(r){var i=dt(e,Wo(n,r),"line",t,u);return a=!0,l>i.bottom?i.left-s:l<i.top?i.left+s:(a=!1,i.left)}var l=i-ni(t),a=!1,s=2*e.display.wrapper.clientWidth,u=Je(e,t),c=ri(t),h=t.text.length,d=no(t),f=ro(t),p=o(d),g=a,m=o(f),v=a;if(r>m)return pt(n,f,v,1);for(;;){if(c?f==d||f==co(t,d,1):1>=f-d){for(var y=p>r||m-r>=r-p?d:f,b=r-(y==d?p:m);_i(t.text.charAt(y));)++y;var x=pt(n,y,y==d?g:v,-1>b?-1:b>1?1:0);return x}var w=Math.ceil(h/2),C=d+w;if(c){C=d;for(var S=0;w>S;++S)C=co(t,C,1)}var k=o(C);k>r?(f=C,m=k,(v=a)&&(m+=1e3),h=w):(d=C,p=k,g=a,h-=w)}}function vt(e){if(null!=e.cachedTextHeight)return e.cachedTextHeight;if(null==Po){Po=Ri("pre");for(var t=0;49>t;++t)Po.appendChild(document.createTextNode("x")),Po.appendChild(Ri("br"));Po.appendChild(document.createTextNode("x"))}Ui(e.measure,Po);var n=Po.offsetHeight/50;return n>3&&(e.cachedTextHeight=n),qi(e.measure),n||1}function yt(e){if(null!=e.cachedCharWidth)return e.cachedCharWidth;var t=Ri("span","xxxxxxxxxx"),n=Ri("pre",[t]);Ui(e.measure,n);var r=t.getBoundingClientRect(),i=(r.right-r.left)/10;return i>2&&(e.cachedCharWidth=i),i||10}function bt(e){e.curOp={cm:e,viewChanged:!1,startHeight:e.doc.height,forceUpdate:!1,updateInput:null,typing:!1,changeObjs:null,cursorActivityHandlers:null,cursorActivityCalled:0,selectionChanged:!1,updateMaxLine:!1,scrollLeft:null,scrollTop:null,scrollToPos:null,focus:!1,id:++qo},Ro?Ro.ops.push(e.curOp):e.curOp.ownsGroup=Ro={ops:[e.curOp],delayedCallbacks:[]}}function xt(e){var t=e.delayedCallbacks,n=0;do{for(;n<t.length;n++)t[n].call(null);for(var r=0;r<e.ops.length;r++){var i=e.ops[r];if(i.cursorActivityHandlers)for(;i.cursorActivityCalled<i.cursorActivityHandlers.length;)i.cursorActivityHandlers[i.cursorActivityCalled++].call(null,i.cm)}}while(n<t.length)}function wt(e){var t=e.curOp,n=t.ownsGroup;if(n)try{xt(n)}finally{Ro=null;for(var r=0;r<n.ops.length;r++)n.ops[r].cm.curOp=null;Ct(n)}}function Ct(e){for(var t=e.ops,n=0;n<t.length;n++)St(t[n]);for(var n=0;n<t.length;n++)kt(t[n]);for(var n=0;n<t.length;n++)Lt(t[n]);for(var n=0;n<t.length;n++)Mt(t[n]);for(var n=0;n<t.length;n++)Tt(t[n])}function St(e){var t=e.cm,n=t.display;M(t),e.updateMaxLine&&d(t),e.mustUpdate=e.viewChanged||e.forceUpdate||null!=e.scrollTop||e.scrollToPos&&(e.scrollToPos.from.line<n.viewFrom||e.scrollToPos.to.line>=n.viewTo)||n.maxLineChanged&&t.options.lineWrapping,e.update=e.mustUpdate&&new L(t,e.mustUpdate&&{top:e.scrollTop,ensure:e.scrollToPos},e.forceUpdate)}function kt(e){e.updatedDisplay=e.mustUpdate&&T(e.cm,e.update)}function Lt(e){var t=e.cm,n=t.display;e.updatedDisplay&&H(t),e.barMeasure=p(t),n.maxLineChanged&&!t.options.lineWrapping&&(e.adjustWidthTo=Ze(t,n.maxLine,n.maxLine.text.length).left+3,t.display.sizerWidth=e.adjustWidthTo,e.barMeasure.scrollWidth=Math.max(n.scroller.clientWidth,n.sizer.offsetLeft+e.adjustWidthTo+je(t)+t.display.barWidth),e.maxScrollLeft=Math.max(0,n.sizer.offsetLeft+e.adjustWidthTo-$e(t))),(e.updatedDisplay||e.selectionChanged)&&(e.preparedSelection=n.input.prepareSelection())}function Mt(e){var t=e.cm;null!=e.adjustWidthTo&&(t.display.sizer.style.minWidth=e.adjustWidthTo+"px",e.maxScrollLeft<t.doc.scrollLeft&&rn(t,Math.min(t.display.scroller.scrollLeft,e.maxScrollLeft),!0),t.display.maxLineChanged=!1),e.preparedSelection&&t.display.input.showSelection(e.preparedSelection),e.updatedDisplay&&D(t,e.barMeasure),(e.updatedDisplay||e.startHeight!=t.doc.height)&&y(t,e.barMeasure),e.selectionChanged&&Pe(t),t.state.focused&&e.updateInput&&t.display.input.reset(e.typing),e.focus&&e.focus==Gi()&&Y(e.cm)}function Tt(e){var t=e.cm,n=t.display,r=t.doc;if(e.updatedDisplay&&N(t,e.update),null==n.wheelStartX||null==e.scrollTop&&null==e.scrollLeft&&!e.scrollToPos||(n.wheelStartX=n.wheelStartY=null),null==e.scrollTop||n.scroller.scrollTop==e.scrollTop&&!e.forceScroll||(r.scrollTop=Math.max(0,Math.min(n.scroller.scrollHeight-n.scroller.clientHeight,e.scrollTop)),n.scrollbars.setScrollTop(r.scrollTop),n.scroller.scrollTop=r.scrollTop),null==e.scrollLeft||n.scroller.scrollLeft==e.scrollLeft&&!e.forceScroll||(r.scrollLeft=Math.max(0,Math.min(n.scroller.scrollWidth-$e(t),e.scrollLeft)),n.scrollbars.setScrollLeft(r.scrollLeft),n.scroller.scrollLeft=r.scrollLeft,w(t)),e.scrollToPos){var i=En(t,me(r,e.scrollToPos.from),me(r,e.scrollToPos.to),e.scrollToPos.margin);e.scrollToPos.isCursor&&t.state.focused&&On(t,i)}var o=e.maybeHiddenMarkers,l=e.maybeUnhiddenMarkers;if(o)for(var a=0;a<o.length;++a)o[a].lines.length||Al(o[a],"hide");if(l)for(var a=0;a<l.length;++a)l[a].lines.length&&Al(l[a],"unhide");n.wrapper.offsetHeight&&(r.scrollTop=t.display.scroller.scrollTop),e.changeObjs&&Al(t,"changes",t,e.changeObjs),e.update&&e.update.finish()}function Nt(e,t){if(e.curOp)return t();bt(e);try{return t()}finally{wt(e)}}function At(e,t){return function(){if(e.curOp)return t.apply(e,arguments);bt(e);try{return t.apply(e,arguments)}finally{wt(e)}}}function Dt(e){return function(){if(this.curOp)return e.apply(this,arguments);bt(this);try{return e.apply(this,arguments)}finally{wt(this)}}}function Ht(e){return function(){var t=this.cm;if(!t||t.curOp)return e.apply(this,arguments);bt(t);try{return e.apply(this,arguments)}finally{wt(t)}}}function Ot(e,t,n){this.line=t,this.rest=yr(t),this.size=this.rest?ei(Hi(this.rest))-n+1:1,this.node=this.text=null,this.hidden=wr(e,t)}function Et(e,t,n){for(var r,i=[],o=t;n>o;o=r){var l=new Ot(e.doc,Yr(e.doc,o),o);r=o+l.size,i.push(l)}return i}function Wt(e,t,n,r){null==t&&(t=e.doc.first),null==n&&(n=e.doc.first+e.doc.size),r||(r=0);var i=e.display;if(r&&n<i.viewTo&&(null==i.updateLineNumbers||i.updateLineNumbers>t)&&(i.updateLineNumbers=t),e.curOp.viewChanged=!0,t>=i.viewTo)Eo&&br(e.doc,t)<i.viewTo&&Ft(e);else if(n<=i.viewFrom)Eo&&xr(e.doc,n+r)>i.viewFrom?Ft(e):(i.viewFrom+=r,i.viewTo+=r);else if(t<=i.viewFrom&&n>=i.viewTo)Ft(e);else if(t<=i.viewFrom){var o=Bt(e,n,n+r,1);o?(i.view=i.view.slice(o.index),i.viewFrom=o.lineN,i.viewTo+=r):Ft(e)}else if(n>=i.viewTo){var o=Bt(e,t,t,-1);o?(i.view=i.view.slice(0,o.index),i.viewTo=o.lineN):Ft(e)}else{var l=Bt(e,t,t,-1),a=Bt(e,n,n+r,1);l&&a?(i.view=i.view.slice(0,l.index).concat(Et(e,l.lineN,a.lineN)).concat(i.view.slice(a.index)),i.viewTo+=r):Ft(e)}var s=i.externalMeasured;s&&(n<s.lineN?s.lineN+=r:t<s.lineN+s.size&&(i.externalMeasured=null))}function It(e,t,n){e.curOp.viewChanged=!0;var r=e.display,i=e.display.externalMeasured;if(i&&t>=i.lineN&&t<i.lineN+i.size&&(r.externalMeasured=null),!(t<r.viewFrom||t>=r.viewTo)){var o=r.view[Pt(e,t)];if(null!=o.node){var l=o.changes||(o.changes=[]);-1==Oi(l,n)&&l.push(n)}}}function Ft(e){e.display.viewFrom=e.display.viewTo=e.doc.first,e.display.view=[],e.display.viewOffset=0}function Pt(e,t){if(t>=e.display.viewTo)return null;if(t-=e.display.viewFrom,0>t)return null;for(var n=e.display.view,r=0;r<n.length;r++)if(t-=n[r].size,0>t)return r}function Bt(e,t,n,r){var i,o=Pt(e,t),l=e.display.view;if(!Eo||n==e.doc.first+e.doc.size)return{index:o,lineN:n};for(var a=0,s=e.display.viewFrom;o>a;a++)s+=l[a].size;if(s!=t){if(r>0){if(o==l.length-1)return null;i=s+l[o].size-t,o++}else i=s-t;t+=i,n+=i}for(;br(e.doc,n)!=n;){if(o==(0>r?0:l.length-1))return null;n+=r*l[o-(0>r?1:0)].size,o+=r}return{index:o,lineN:n}}function zt(e,t,n){var r=e.display,i=r.view;0==i.length||t>=r.viewTo||n<=r.viewFrom?(r.view=Et(e,t,n),r.viewFrom=t):(r.viewFrom>t?r.view=Et(e,t,r.viewFrom).concat(r.view):r.viewFrom<t&&(r.view=r.view.slice(Pt(e,t))),r.viewFrom=t,r.viewTo<n?r.view=r.view.concat(Et(e,r.viewTo,n)):r.viewTo>n&&(r.view=r.view.slice(0,Pt(e,n)))),r.viewTo=n}function _t(e){for(var t=e.display.view,n=0,r=0;r<t.length;r++){var i=t[r];i.hidden||i.node&&!i.changes||++n}return n}function Rt(e){function t(){i.activeTouch&&(o=setTimeout(function(){i.activeTouch=null},1e3),l=i.activeTouch,l.end=+new Date)}function n(e){if(1!=e.touches.length)return!1;var t=e.touches[0];return t.radiusX<=1&&t.radiusY<=1}function r(e,t){if(null==t.left)return!0;var n=t.left-e.left,r=t.top-e.top;return n*n+r*r>400}var i=e.display;Ml(i.scroller,"mousedown",At(e,$t)),mo&&11>vo?Ml(i.scroller,"dblclick",At(e,function(t){if(!Li(e,t)){var n=jt(e,t);if(n&&!Zt(e,t)&&!Gt(e.display,t)){Sl(t);var r=e.findWordAt(n);we(e.doc,r.anchor,r.head)}}})):Ml(i.scroller,"dblclick",function(t){Li(e,t)||Sl(t)}),Ho||Ml(i.scroller,"contextmenu",function(t){yn(e,t)});var o,l={end:0};Ml(i.scroller,"touchstart",function(e){if(!n(e)){clearTimeout(o);var t=+new Date;i.activeTouch={start:t,moved:!1,prev:t-l.end<=300?l:null},1==e.touches.length&&(i.activeTouch.left=e.touches[0].pageX,i.activeTouch.top=e.touches[0].pageY)}}),Ml(i.scroller,"touchmove",function(){i.activeTouch&&(i.activeTouch.moved=!0)}),Ml(i.scroller,"touchend",function(n){var o=i.activeTouch;if(o&&!Gt(i,n)&&null!=o.left&&!o.moved&&new Date-o.start<300){var l,a=e.coordsChar(i.activeTouch,"page");l=!o.prev||r(o,o.prev)?new de(a,a):!o.prev.prev||r(o,o.prev.prev)?e.findWordAt(a):new de(Wo(a.line,0),me(e.doc,Wo(a.line+1,0))),e.setSelection(l.anchor,l.head),e.focus(),Sl(n)}t()}),Ml(i.scroller,"touchcancel",t),Ml(i.scroller,"scroll",function(){i.scroller.clientHeight&&(nn(e,i.scroller.scrollTop),rn(e,i.scroller.scrollLeft,!0),Al(e,"scroll",e))}),Ml(i.scroller,"mousewheel",function(t){on(e,t)}),Ml(i.scroller,"DOMMouseScroll",function(t){on(e,t)}),Ml(i.wrapper,"scroll",function(){i.wrapper.scrollTop=i.wrapper.scrollLeft=0}),i.dragFunctions={enter:function(t){Li(e,t)||Ll(t)},over:function(t){Li(e,t)||(en(e,t),Ll(t))},start:function(t){Jt(e,t)},drop:At(e,Qt),leave:function(){tn(e)}};var a=i.input.getField();Ml(a,"keyup",function(t){fn.call(e,t)}),Ml(a,"keydown",At(e,hn)),Ml(a,"keypress",At(e,pn)),Ml(a,"focus",Pi(mn,e)),Ml(a,"blur",Pi(vn,e))}function qt(t,n,r){var i=r&&r!=e.Init;if(!n!=!i){var o=t.display.dragFunctions,l=n?Ml:Nl;l(t.display.scroller,"dragstart",o.start),l(t.display.scroller,"dragenter",o.enter),l(t.display.scroller,"dragover",o.over),l(t.display.scroller,"dragleave",o.leave),l(t.display.scroller,"drop",o.drop)}}function Ut(e){var t=e.display;(t.lastWrapHeight!=t.wrapper.clientHeight||t.lastWrapWidth!=t.wrapper.clientWidth)&&(t.cachedCharWidth=t.cachedTextHeight=t.cachedPaddingH=null,t.scrollbarsClipped=!1,e.setSize())}function Gt(e,t){for(var n=xi(t);n!=e.wrapper;n=n.parentNode)if(!n||1==n.nodeType&&"true"==n.getAttribute("cm-ignore-events")||n.parentNode==e.sizer&&n!=e.mover)return!0}function jt(e,t,n,r){var i=e.display;if(!n&&"true"==xi(t).getAttribute("cm-not-content"))return null;var o,l,a=i.lineSpace.getBoundingClientRect();try{o=t.clientX-a.left,l=t.clientY-a.top}catch(t){return null}var s,u=gt(e,o,l);if(r&&1==u.xRel&&(s=Yr(e.doc,u.line).text).length==u.ch){var c=Fl(s,s.length,e.options.tabSize)-s.length;u=Wo(u.line,Math.max(0,Math.round((o-Ge(e.display).left)/yt(e.display))-c))}return u}function $t(e){var t=this,n=t.display;if(!(n.activeTouch&&n.input.supportsTouch()||Li(t,e))){if(n.shift=e.shiftKey,Gt(n,e))return void(yo||(n.scroller.draggable=!1,setTimeout(function(){n.scroller.draggable=!0},100)));if(!Zt(t,e)){var r=jt(t,e);switch(window.focus(),wi(e)){case 1:t.state.selectingText?t.state.selectingText(e):r?Vt(t,e,r):xi(e)==n.scroller&&Sl(e);break;case 2:yo&&(t.state.lastMiddleDown=+new Date),r&&we(t.doc,r),setTimeout(function(){n.input.focus()},20),Sl(e);break;case 3:Ho?yn(t,e):gn(t)}}}}function Vt(e,t,n){mo?setTimeout(Pi(Y,e),0):e.curOp.focus=Gi();var r,i=+new Date;zo&&zo.time>i-400&&0==Io(zo.pos,n)?r="triple":Bo&&Bo.time>i-400&&0==Io(Bo.pos,n)?(r="double",zo={time:i,pos:n}):(r="single",Bo={time:i,pos:n});var o,l=e.doc.sel,a=To?t.metaKey:t.ctrlKey;e.options.dragDrop&&Yl&&!Z(e)&&"single"==r&&(o=l.contains(n))>-1&&(Io((o=l.ranges[o]).from(),n)<0||n.xRel>0)&&(Io(o.to(),n)>0||n.xRel<0)?Kt(e,t,n,a):Xt(e,t,n,r,a)}function Kt(e,t,n,r){var i=e.display,o=+new Date,l=At(e,function(a){yo&&(i.scroller.draggable=!1),e.state.draggingText=!1,Nl(document,"mouseup",l),Nl(i.scroller,"drop",l),Math.abs(t.clientX-a.clientX)+Math.abs(t.clientY-a.clientY)<10&&(Sl(a),!r&&+new Date-200<o&&we(e.doc,n),yo||mo&&9==vo?setTimeout(function(){document.body.focus(),i.input.focus()},20):i.input.focus())});yo&&(i.scroller.draggable=!0),e.state.draggingText=l,i.scroller.dragDrop&&i.scroller.dragDrop(),Ml(document,"mouseup",l),Ml(i.scroller,"drop",l)}function Xt(e,t,n,r,i){function o(t){if(0!=Io(m,t))if(m=t,"rect"==r){for(var i=[],o=e.options.tabSize,l=Fl(Yr(u,n.line).text,n.ch,o),a=Fl(Yr(u,t.line).text,t.ch,o),s=Math.min(l,a),f=Math.max(l,a),p=Math.min(n.line,t.line),g=Math.min(e.lastLine(),Math.max(n.line,t.line));g>=p;p++){var v=Yr(u,p).text,y=Pl(v,s,o);s==f?i.push(new de(Wo(p,y),Wo(p,y))):v.length>y&&i.push(new de(Wo(p,y),Wo(p,Pl(v,f,o))))}i.length||i.push(new de(n,n)),Te(u,fe(d.ranges.slice(0,h).concat(i),h),{origin:"*mouse",scroll:!1}),e.scrollIntoView(t)}else{var b=c,x=b.anchor,w=t;if("single"!=r){if("double"==r)var C=e.findWordAt(t);else var C=new de(Wo(t.line,0),me(u,Wo(t.line+1,0)));Io(C.anchor,x)>0?(w=C.head,x=X(b.from(),C.anchor)):(w=C.anchor,x=K(b.to(),C.head))}var i=d.ranges.slice(0);i[h]=new de(me(u,x),w),Te(u,fe(i,h),Wl)}}function l(t){var n=++y,i=jt(e,t,!0,"rect"==r);if(i)if(0!=Io(i,m)){e.curOp.focus=Gi(),o(i);var a=x(s,u);(i.line>=a.to||i.line<a.from)&&setTimeout(At(e,function(){y==n&&l(t)}),150)}else{var c=t.clientY<v.top?-20:t.clientY>v.bottom?20:0;c&&setTimeout(At(e,function(){y==n&&(s.scroller.scrollTop+=c,l(t))}),50)}}function a(t){e.state.selectingText=!1,y=1/0,Sl(t),s.input.focus(),Nl(document,"mousemove",b),Nl(document,"mouseup",w),u.history.lastSelOrigin=null}var s=e.display,u=e.doc;Sl(t);var c,h,d=u.sel,f=d.ranges;if(i&&!t.shiftKey?(h=u.sel.contains(n),c=h>-1?f[h]:new de(n,n)):(c=u.sel.primary(),h=u.sel.primIndex),t.altKey)r="rect",i||(c=new de(n,n)),n=jt(e,t,!0,!0),h=-1;else if("double"==r){var p=e.findWordAt(n);c=e.display.shift||u.extend?xe(u,c,p.anchor,p.head):p}else if("triple"==r){var g=new de(Wo(n.line,0),me(u,Wo(n.line+1,0)));c=e.display.shift||u.extend?xe(u,c,g.anchor,g.head):g}else c=xe(u,c,n);i?-1==h?(h=f.length,Te(u,fe(f.concat([c]),h),{scroll:!1,origin:"*mouse"})):f.length>1&&f[h].empty()&&"single"==r&&!t.shiftKey?(Te(u,fe(f.slice(0,h).concat(f.slice(h+1)),0),{scroll:!1,origin:"*mouse"}),d=u.sel):Se(u,h,c,Wl):(h=0,Te(u,new he([c],0),Wl),d=u.sel);var m=n,v=s.wrapper.getBoundingClientRect(),y=0,b=At(e,function(e){wi(e)?l(e):a(e)}),w=At(e,a);e.state.selectingText=w,Ml(document,"mousemove",b),Ml(document,"mouseup",w)}function Yt(e,t,n,r,i){try{var o=t.clientX,l=t.clientY}catch(t){return!1}if(o>=Math.floor(e.display.gutters.getBoundingClientRect().right))return!1;r&&Sl(t);var a=e.display,s=a.lineDiv.getBoundingClientRect();if(l>s.bottom||!Ti(e,n))return bi(t);l-=s.top-a.viewOffset;for(var u=0;u<e.options.gutters.length;++u){var c=a.gutters.childNodes[u];if(c&&c.getBoundingClientRect().right>=o){var h=ti(e.doc,l),d=e.options.gutters[u];return i(e,n,e,h,d,t),bi(t)}}}function Zt(e,t){return Yt(e,t,"gutterClick",!0,Si)}function Qt(e){var t=this;if(tn(t),!Li(t,e)&&!Gt(t.display,e)){Sl(e),mo&&(Uo=+new Date);var n=jt(t,e,!0),r=e.dataTransfer.files;if(n&&!Z(t))if(r&&r.length&&window.FileReader&&window.File)for(var i=r.length,o=Array(i),l=0,a=function(e,r){if(!t.options.allowDropFileTypes||-1!=Oi(t.options.allowDropFileTypes,e.type)){var a=new FileReader;a.onload=At(t,function(){var e=a.result;if(/[\x00-\x08\x0e-\x1f]{2}/.test(e)&&(e=""),o[r]=e,++l==i){n=me(t.doc,n);var s={from:n,to:n,text:t.doc.splitLines(o.join(t.doc.lineSeparator())),origin:"paste"};Ln(t.doc,s),Me(t.doc,pe(n,Xo(s)))}}),a.readAsText(e)}},s=0;i>s;++s)a(r[s],s);else{if(t.state.draggingText&&t.doc.sel.contains(n)>-1)return t.state.draggingText(e),void setTimeout(function(){t.display.input.focus()},20);try{var o=e.dataTransfer.getData("Text");if(o){if(t.state.draggingText&&!(To?e.altKey:e.ctrlKey))var u=t.listSelections();if(Ne(t.doc,pe(n,n)),u)for(var s=0;s<u.length;++s)Hn(t.doc,"",u[s].anchor,u[s].head,"drag");t.replaceSelection(o,"around","paste"),t.display.input.focus()}}catch(e){}}}}function Jt(e,t){if(mo&&(!e.state.draggingText||+new Date-Uo<100))return void Ll(t);if(!Li(e,t)&&!Gt(e.display,t)&&(t.dataTransfer.setData("Text",e.getSelection()),t.dataTransfer.setDragImage&&!Co)){var n=Ri("img",null,null,"position: fixed; left: 0; top: 0;");n.src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==",wo&&(n.width=n.height=1,e.display.wrapper.appendChild(n),n._top=n.offsetTop),t.dataTransfer.setDragImage(n,0,0),wo&&n.parentNode.removeChild(n)}}function en(e,t){var n=jt(e,t);if(n){var r=document.createDocumentFragment();Ie(e,n,r),e.display.dragCursor||(e.display.dragCursor=Ri("div",null,"CodeMirror-cursors CodeMirror-dragcursors"),e.display.lineSpace.insertBefore(e.display.dragCursor,e.display.cursorDiv)),Ui(e.display.dragCursor,r)}}function tn(e){e.display.dragCursor&&(e.display.lineSpace.removeChild(e.display.dragCursor),e.display.dragCursor=null)}function nn(e,t){Math.abs(e.doc.scrollTop-t)<2||(e.doc.scrollTop=t,fo||A(e,{top:t}),e.display.scroller.scrollTop!=t&&(e.display.scroller.scrollTop=t),e.display.scrollbars.setScrollTop(t),fo&&A(e),Be(e,100))}function rn(e,t,n){(n?t==e.doc.scrollLeft:Math.abs(e.doc.scrollLeft-t)<2)||(t=Math.min(t,e.display.scroller.scrollWidth-e.display.scroller.clientWidth),e.doc.scrollLeft=t,w(e),e.display.scroller.scrollLeft!=t&&(e.display.scroller.scrollLeft=t),e.display.scrollbars.setScrollLeft(t))}function on(e,t){var n=$o(t),r=n.x,i=n.y,o=e.display,l=o.scroller;if(r&&l.scrollWidth>l.clientWidth||i&&l.scrollHeight>l.clientHeight){if(i&&To&&yo)e:for(var a=t.target,s=o.view;a!=l;a=a.parentNode)for(var u=0;u<s.length;u++)if(s[u].node==a){e.display.currentWheelTarget=a;break e}if(r&&!fo&&!wo&&null!=jo)return i&&nn(e,Math.max(0,Math.min(l.scrollTop+i*jo,l.scrollHeight-l.clientHeight))),rn(e,Math.max(0,Math.min(l.scrollLeft+r*jo,l.scrollWidth-l.clientWidth))),Sl(t),void(o.wheelStartX=null);if(i&&null!=jo){var c=i*jo,h=e.doc.scrollTop,d=h+o.wrapper.clientHeight;0>c?h=Math.max(0,h+c-50):d=Math.min(e.doc.height,d+c+50),A(e,{top:h,bottom:d})}20>Go&&(null==o.wheelStartX?(o.wheelStartX=l.scrollLeft,o.wheelStartY=l.scrollTop,o.wheelDX=r,o.wheelDY=i,setTimeout(function(){if(null!=o.wheelStartX){var e=l.scrollLeft-o.wheelStartX,t=l.scrollTop-o.wheelStartY,n=t&&o.wheelDY&&t/o.wheelDY||e&&o.wheelDX&&e/o.wheelDX;o.wheelStartX=o.wheelStartY=null,n&&(jo=(jo*Go+n)/(Go+1),++Go)}},200)):(o.wheelDX+=r,o.wheelDY+=i))}}function ln(e,t,n){if("string"==typeof t&&(t=ll[t],!t))return!1;e.display.input.ensurePolled();var r=e.display.shift,i=!1;try{Z(e)&&(e.state.suppressEdits=!0),n&&(e.display.shift=!1),i=t(e)!=Ol}finally{e.display.shift=r,e.state.suppressEdits=!1}return i}function an(e,t,n){for(var r=0;r<e.state.keyMaps.length;r++){var i=sl(t,e.state.keyMaps[r],n,e);if(i)return i}return e.options.extraKeys&&sl(t,e.options.extraKeys,n,e)||sl(t,e.options.keyMap,n,e)}function sn(e,t,n,r){var i=e.state.keySeq;if(i){if(ul(t))return"handled";Vo.set(50,function(){e.state.keySeq==i&&(e.state.keySeq=null,e.display.input.reset())}),t=i+" "+t}var o=an(e,t,r);return"multi"==o&&(e.state.keySeq=t),"handled"==o&&Si(e,"keyHandled",e,t,n),("handled"==o||"multi"==o)&&(Sl(n),Pe(e)),i&&!o&&/\'$/.test(t)?(Sl(n),!0):!!o}function un(e,t){var n=cl(t,!0);return n?t.shiftKey&&!e.state.keySeq?sn(e,"Shift-"+n,t,function(t){return ln(e,t,!0)})||sn(e,n,t,function(t){return("string"==typeof t?/^go[A-Z]/.test(t):t.motion)?ln(e,t):void 0}):sn(e,n,t,function(t){return ln(e,t)}):!1}function cn(e,t,n){return sn(e,"'"+n+"'",t,function(t){return ln(e,t,!0)})}function hn(e){var t=this;if(t.curOp.focus=Gi(),!Li(t,e)){mo&&11>vo&&27==e.keyCode&&(e.returnValue=!1);var n=e.keyCode;t.display.shift=16==n||e.shiftKey;var r=un(t,e);wo&&(Ko=r?n:null,!r&&88==n&&!Jl&&(To?e.metaKey:e.ctrlKey)&&t.replaceSelection("",null,"cut")),18!=n||/\bCodeMirror-crosshair\b/.test(t.display.lineDiv.className)||dn(t)}}function dn(e){function t(e){18!=e.keyCode&&e.altKey||(Vl(n,"CodeMirror-crosshair"),Nl(document,"keyup",t),Nl(document,"mouseover",t))}var n=e.display.lineDiv;Kl(n,"CodeMirror-crosshair"),Ml(document,"keyup",t),Ml(document,"mouseover",t)}function fn(e){16==e.keyCode&&(this.doc.sel.shift=!1),Li(this,e)}function pn(e){
-var t=this;if(!(Gt(t.display,e)||Li(t,e)||e.ctrlKey&&!e.altKey||To&&e.metaKey)){var n=e.keyCode,r=e.charCode;if(wo&&n==Ko)return Ko=null,void Sl(e);if(!wo||e.which&&!(e.which<10)||!un(t,e)){var i=String.fromCharCode(null==r?n:r);cn(t,e,i)||t.display.input.onKeyPress(e)}}}function gn(e){e.state.delayingBlurEvent=!0,setTimeout(function(){e.state.delayingBlurEvent&&(e.state.delayingBlurEvent=!1,vn(e))},100)}function mn(e){e.state.delayingBlurEvent&&(e.state.delayingBlurEvent=!1),"nocursor"!=e.options.readOnly&&(e.state.focused||(Al(e,"focus",e),e.state.focused=!0,Kl(e.display.wrapper,"CodeMirror-focused"),e.curOp||e.display.selForContextMenu==e.doc.sel||(e.display.input.reset(),yo&&setTimeout(function(){e.display.input.reset(!0)},20)),e.display.input.receivedFocus()),Pe(e))}function vn(e){e.state.delayingBlurEvent||(e.state.focused&&(Al(e,"blur",e),e.state.focused=!1,Vl(e.display.wrapper,"CodeMirror-focused")),clearInterval(e.display.blinker),setTimeout(function(){e.state.focused||(e.display.shift=!1)},150))}function yn(e,t){Gt(e.display,t)||bn(e,t)||Li(e,t,"contextmenu")||e.display.input.onContextMenu(t)}function bn(e,t){return Ti(e,"gutterContextMenu")?Yt(e,t,"gutterContextMenu",!1,Al):!1}function xn(e,t){if(Io(e,t.from)<0)return e;if(Io(e,t.to)<=0)return Xo(t);var n=e.line+t.text.length-(t.to.line-t.from.line)-1,r=e.ch;return e.line==t.to.line&&(r+=Xo(t).ch-t.to.ch),Wo(n,r)}function wn(e,t){for(var n=[],r=0;r<e.sel.ranges.length;r++){var i=e.sel.ranges[r];n.push(new de(xn(i.anchor,t),xn(i.head,t)))}return fe(n,e.sel.primIndex)}function Cn(e,t,n){return e.line==t.line?Wo(n.line,e.ch-t.ch+n.ch):Wo(n.line+(e.line-t.line),e.ch)}function Sn(e,t,n){for(var r=[],i=Wo(e.first,0),o=i,l=0;l<t.length;l++){var a=t[l],s=Cn(a.from,i,o),u=Cn(Xo(a),i,o);if(i=a.to,o=u,"around"==n){var c=e.sel.ranges[l],h=Io(c.head,c.anchor)<0;r[l]=new de(h?u:s,h?s:u)}else r[l]=new de(s,s)}return new he(r,e.sel.primIndex)}function kn(e,t,n){var r={canceled:!1,from:t.from,to:t.to,text:t.text,origin:t.origin,cancel:function(){this.canceled=!0}};return n&&(r.update=function(t,n,r,i){t&&(this.from=me(e,t)),n&&(this.to=me(e,n)),r&&(this.text=r),void 0!==i&&(this.origin=i)}),Al(e,"beforeChange",e,r),e.cm&&Al(e.cm,"beforeChange",e.cm,r),r.canceled?null:{from:r.from,to:r.to,text:r.text,origin:r.origin}}function Ln(e,t,n){if(e.cm){if(!e.cm.curOp)return At(e.cm,Ln)(e,t,n);if(e.cm.state.suppressEdits)return}if(!(Ti(e,"beforeChange")||e.cm&&Ti(e.cm,"beforeChange"))||(t=kn(e,t,!0))){var r=Oo&&!n&&ar(e,t.from,t.to);if(r)for(var i=r.length-1;i>=0;--i)Mn(e,{from:r[i].from,to:r[i].to,text:i?[""]:t.text});else Mn(e,t)}}function Mn(e,t){if(1!=t.text.length||""!=t.text[0]||0!=Io(t.from,t.to)){var n=wn(e,t);si(e,t,n,e.cm?e.cm.curOp.id:NaN),An(e,t,n,ir(e,t));var r=[];Kr(e,function(e,n){n||-1!=Oi(r,e.history)||(yi(e.history,t),r.push(e.history)),An(e,t,null,ir(e,t))})}}function Tn(e,t,n){if(!e.cm||!e.cm.state.suppressEdits){for(var r,i=e.history,o=e.sel,l="undo"==t?i.done:i.undone,a="undo"==t?i.undone:i.done,s=0;s<l.length&&(r=l[s],n?!r.ranges||r.equals(e.sel):r.ranges);s++);if(s!=l.length){for(i.lastOrigin=i.lastSelOrigin=null;r=l.pop(),r.ranges;){if(hi(r,a),n&&!r.equals(e.sel))return void Te(e,r,{clearRedo:!1});o=r}var u=[];hi(o,a),a.push({changes:u,generation:i.generation}),i.generation=r.generation||++i.maxGeneration;for(var c=Ti(e,"beforeChange")||e.cm&&Ti(e.cm,"beforeChange"),s=r.changes.length-1;s>=0;--s){var h=r.changes[s];if(h.origin=t,c&&!kn(e,h,!1))return void(l.length=0);u.push(oi(e,h));var d=s?wn(e,h):Hi(l);An(e,h,d,lr(e,h)),!s&&e.cm&&e.cm.scrollIntoView({from:h.from,to:Xo(h)});var f=[];Kr(e,function(e,t){t||-1!=Oi(f,e.history)||(yi(e.history,h),f.push(e.history)),An(e,h,null,lr(e,h))})}}}}function Nn(e,t){if(0!=t&&(e.first+=t,e.sel=new he(Ei(e.sel.ranges,function(e){return new de(Wo(e.anchor.line+t,e.anchor.ch),Wo(e.head.line+t,e.head.ch))}),e.sel.primIndex),e.cm)){Wt(e.cm,e.first,e.first-t,t);for(var n=e.cm.display,r=n.viewFrom;r<n.viewTo;r++)It(e.cm,r,"gutter")}}function An(e,t,n,r){if(e.cm&&!e.cm.curOp)return At(e.cm,An)(e,t,n,r);if(t.to.line<e.first)return void Nn(e,t.text.length-1-(t.to.line-t.from.line));if(!(t.from.line>e.lastLine())){if(t.from.line<e.first){var i=t.text.length-1-(e.first-t.from.line);Nn(e,i),t={from:Wo(e.first,0),to:Wo(t.to.line+i,t.to.ch),text:[Hi(t.text)],origin:t.origin}}var o=e.lastLine();t.to.line>o&&(t={from:t.from,to:Wo(o,Yr(e,o).text.length),text:[t.text[0]],origin:t.origin}),t.removed=Zr(e,t.from,t.to),n||(n=wn(e,t)),e.cm?Dn(e.cm,t,r):jr(e,t,r),Ne(e,n,El)}}function Dn(e,t,n){var r=e.doc,i=e.display,l=t.from,a=t.to,s=!1,u=l.line;e.options.lineWrapping||(u=ei(vr(Yr(r,l.line))),r.iter(u,a.line+1,function(e){return e==i.maxLine?(s=!0,!0):void 0})),r.sel.contains(t.from,t.to)>-1&&Mi(e),jr(r,t,n,o(e)),e.options.lineWrapping||(r.iter(u,l.line+t.text.length,function(e){var t=h(e);t>i.maxLineLength&&(i.maxLine=e,i.maxLineLength=t,i.maxLineChanged=!0,s=!1)}),s&&(e.curOp.updateMaxLine=!0)),r.frontier=Math.min(r.frontier,l.line),Be(e,400);var c=t.text.length-(a.line-l.line)-1;t.full?Wt(e):l.line!=a.line||1!=t.text.length||Gr(e.doc,t)?Wt(e,l.line,a.line+1,c):It(e,l.line,"text");var d=Ti(e,"changes"),f=Ti(e,"change");if(f||d){var p={from:l,to:a,text:t.text,removed:t.removed,origin:t.origin};f&&Si(e,"change",e,p),d&&(e.curOp.changeObjs||(e.curOp.changeObjs=[])).push(p)}e.display.selForContextMenu=null}function Hn(e,t,n,r,i){if(r||(r=n),Io(r,n)<0){var o=r;r=n,n=o}"string"==typeof t&&(t=e.splitLines(t)),Ln(e,{from:n,to:r,text:t,origin:i})}function On(e,t){if(!Li(e,"scrollCursorIntoView")){var n=e.display,r=n.sizer.getBoundingClientRect(),i=null;if(t.top+r.top<0?i=!0:t.bottom+r.top>(window.innerHeight||document.documentElement.clientHeight)&&(i=!1),null!=i&&!ko){var o=Ri("div","​",null,"position: absolute; top: "+(t.top-n.viewOffset-qe(e.display))+"px; height: "+(t.bottom-t.top+je(e)+n.barHeight)+"px; left: "+t.left+"px; width: 2px;");e.display.lineSpace.appendChild(o),o.scrollIntoView(i),e.display.lineSpace.removeChild(o)}}}function En(e,t,n,r){null==r&&(r=0);for(var i=0;5>i;i++){var o=!1,l=dt(e,t),a=n&&n!=t?dt(e,n):l,s=In(e,Math.min(l.left,a.left),Math.min(l.top,a.top)-r,Math.max(l.left,a.left),Math.max(l.bottom,a.bottom)+r),u=e.doc.scrollTop,c=e.doc.scrollLeft;if(null!=s.scrollTop&&(nn(e,s.scrollTop),Math.abs(e.doc.scrollTop-u)>1&&(o=!0)),null!=s.scrollLeft&&(rn(e,s.scrollLeft),Math.abs(e.doc.scrollLeft-c)>1&&(o=!0)),!o)break}return l}function Wn(e,t,n,r,i){var o=In(e,t,n,r,i);null!=o.scrollTop&&nn(e,o.scrollTop),null!=o.scrollLeft&&rn(e,o.scrollLeft)}function In(e,t,n,r,i){var o=e.display,l=vt(e.display);0>n&&(n=0);var a=e.curOp&&null!=e.curOp.scrollTop?e.curOp.scrollTop:o.scroller.scrollTop,s=Ve(e),u={};i-n>s&&(i=n+s);var c=e.doc.height+Ue(o),h=l>n,d=i>c-l;if(a>n)u.scrollTop=h?0:n;else if(i>a+s){var f=Math.min(n,(d?c:i)-s);f!=a&&(u.scrollTop=f)}var p=e.curOp&&null!=e.curOp.scrollLeft?e.curOp.scrollLeft:o.scroller.scrollLeft,g=$e(e)-(e.options.fixedGutter?o.gutters.offsetWidth:0),m=r-t>g;return m&&(r=t+g),10>t?u.scrollLeft=0:p>t?u.scrollLeft=Math.max(0,t-(m?0:10)):r>g+p-3&&(u.scrollLeft=r+(m?0:10)-g),u}function Fn(e,t,n){(null!=t||null!=n)&&Bn(e),null!=t&&(e.curOp.scrollLeft=(null==e.curOp.scrollLeft?e.doc.scrollLeft:e.curOp.scrollLeft)+t),null!=n&&(e.curOp.scrollTop=(null==e.curOp.scrollTop?e.doc.scrollTop:e.curOp.scrollTop)+n)}function Pn(e){Bn(e);var t=e.getCursor(),n=t,r=t;e.options.lineWrapping||(n=t.ch?Wo(t.line,t.ch-1):t,r=Wo(t.line,t.ch+1)),e.curOp.scrollToPos={from:n,to:r,margin:e.options.cursorScrollMargin,isCursor:!0}}function Bn(e){var t=e.curOp.scrollToPos;if(t){e.curOp.scrollToPos=null;var n=ft(e,t.from),r=ft(e,t.to),i=In(e,Math.min(n.left,r.left),Math.min(n.top,r.top)-t.margin,Math.max(n.right,r.right),Math.max(n.bottom,r.bottom)+t.margin);e.scrollTo(i.scrollLeft,i.scrollTop)}}function zn(e,t,n,r){var i,o=e.doc;null==n&&(n="add"),"smart"==n&&(o.mode.indent?i=Re(e,t):n="prev");var l=e.options.tabSize,a=Yr(o,t),s=Fl(a.text,null,l);a.stateAfter&&(a.stateAfter=null);var u,c=a.text.match(/^\s*/)[0];if(r||/\S/.test(a.text)){if("smart"==n&&(u=o.mode.indent(i,a.text.slice(c.length),a.text),u==Ol||u>150)){if(!r)return;n="prev"}}else u=0,n="not";"prev"==n?u=t>o.first?Fl(Yr(o,t-1).text,null,l):0:"add"==n?u=s+e.options.indentUnit:"subtract"==n?u=s-e.options.indentUnit:"number"==typeof n&&(u=s+n),u=Math.max(0,u);var h="",d=0;if(e.options.indentWithTabs)for(var f=Math.floor(u/l);f;--f)d+=l,h+="	";if(u>d&&(h+=Di(u-d)),h!=c)return Hn(o,h,Wo(t,0),Wo(t,c.length),"+input"),a.stateAfter=null,!0;for(var f=0;f<o.sel.ranges.length;f++){var p=o.sel.ranges[f];if(p.head.line==t&&p.head.ch<c.length){var d=Wo(t,c.length);Se(o,f,new de(d,d));break}}}function _n(e,t,n,r){var i=t,o=t;return"number"==typeof t?o=Yr(e,ge(e,t)):i=ei(t),null==i?null:(r(o,i)&&e.cm&&It(e.cm,i,n),o)}function Rn(e,t){for(var n=e.doc.sel.ranges,r=[],i=0;i<n.length;i++){for(var o=t(n[i]);r.length&&Io(o.from,Hi(r).to)<=0;){var l=r.pop();if(Io(l.from,o.from)<0){o.from=l.from;break}}r.push(o)}Nt(e,function(){for(var t=r.length-1;t>=0;t--)Hn(e.doc,"",r[t].from,r[t].to,"+delete");Pn(e)})}function qn(e,t,n,r,i){function o(){var t=a+n;return t<e.first||t>=e.first+e.size?h=!1:(a=t,c=Yr(e,t))}function l(e){var t=(i?co:ho)(c,s,n,!0);if(null==t){if(e||!o())return h=!1;s=i?(0>n?ro:no)(c):0>n?c.text.length:0}else s=t;return!0}var 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if(/^a(lt)?$/i.test(a))t=!0;else if(/^(c|ctrl|control)$/i.test(a))n=!0;else{if(!/^s(hift)$/i.test(a))throw new Error("Unrecognized modifier name: "+a);r=!0}}return t&&(e="Alt-"+e),n&&(e="Ctrl-"+e),i&&(e="Cmd-"+e),r&&(e="Shift-"+e),e}function $n(e){return"string"==typeof e?al[e]:e}function Vn(e,t,n,r,i){if(r&&r.shared)return Kn(e,t,n,r,i);if(e.cm&&!e.cm.curOp)return At(e.cm,Vn)(e,t,n,r,i);var o=new fl(e,i),l=Io(t,n);if(r&&Fi(r,o,!1),l>0||0==l&&o.clearWhenEmpty!==!1)return o;if(o.replacedWith&&(o.collapsed=!0,o.widgetNode=Ri("span",[o.replacedWith],"CodeMirror-widget"),r.handleMouseEvents||o.widgetNode.setAttribute("cm-ignore-events","true"),r.insertLeft&&(o.widgetNode.insertLeft=!0)),o.collapsed){if(mr(e,t.line,t,n,o)||t.line!=n.line&&mr(e,n.line,t,n,o))throw new Error("Inserting collapsed marker partially overlapping an existing one");Eo=!0}o.addToHistory&&si(e,{from:t,to:n,origin:"markText"},e.sel,NaN);var a,s=t.line,u=e.cm;if(e.iter(s,n.line+1,function(e){u&&o.collapsed&&!u.options.lineWrapping&&vr(e)==u.display.maxLine&&(a=!0),o.collapsed&&s!=t.line&&Jr(e,0),tr(e,new Qn(o,s==t.line?t.ch:null,s==n.line?n.ch:null)),++s}),o.collapsed&&e.iter(t.line,n.line+1,function(t){wr(e,t)&&Jr(t,0)}),o.clearOnEnter&&Ml(o,"beforeCursorEnter",function(){o.clear()}),o.readOnly&&(Oo=!0,(e.history.done.length||e.history.undone.length)&&e.clearHistory()),o.collapsed&&(o.id=++dl,o.atomic=!0),u){if(a&&(u.curOp.updateMaxLine=!0),o.collapsed)Wt(u,t.line,n.line+1);else if(o.className||o.title||o.startStyle||o.endStyle||o.css)for(var c=t.line;c<=n.line;c++)It(u,c,"text");o.atomic&&De(u.doc),Si(u,"markerAdded",u,o)}return o}function Kn(e,t,n,r,i){r=Fi(r),r.shared=!1;var o=[Vn(e,t,n,r,i)],l=o[0],a=r.widgetNode;return Kr(e,function(e){a&&(r.widgetNode=a.cloneNode(!0)),o.push(Vn(e,me(e,t),me(e,n),r,i));for(var s=0;s<e.linked.length;++s)if(e.linked[s].isParent)return;l=Hi(o)}),new pl(o,l)}function Xn(e){return e.findMarks(Wo(e.first,0),e.clipPos(Wo(e.lastLine())),function(e){return e.parent})}function Yn(e,t){for(var n=0;n<t.length;n++){var r=t[n],i=r.find(),o=e.clipPos(i.from),l=e.clipPos(i.to);if(Io(o,l)){var a=Vn(e,o,l,r.primary,r.primary.type);r.markers.push(a),a.parent=r}}}function Zn(e){for(var t=0;t<e.length;t++){var n=e[t],r=[n.primary.doc];Kr(n.primary.doc,function(e){r.push(e)});for(var i=0;i<n.markers.length;i++){var o=n.markers[i];-1==Oi(r,o.doc)&&(o.parent=null,n.markers.splice(i--,1))}}}function Qn(e,t,n){this.marker=e,this.from=t,this.to=n}function Jn(e,t){if(e)for(var n=0;n<e.length;++n){var r=e[n];if(r.marker==t)return r}}function er(e,t){for(var n,r=0;r<e.length;++r)e[r]!=t&&(n||(n=[])).push(e[r]);return n}function tr(e,t){e.markedSpans=e.markedSpans?e.markedSpans.concat([t]):[t],t.marker.attachLine(e)}function nr(e,t,n){if(e)for(var r,i=0;i<e.length;++i){var 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h=0;h<s.length;++h){var d=s[h];if(null!=d.to&&(d.to+=c),null==d.from){var f=Jn(a,d.marker);f||(d.from=c,u&&(a||(a=[])).push(d))}else d.from+=c,u&&(a||(a=[])).push(d)}a&&(a=or(a)),s&&s!=a&&(s=or(s));var p=[a];if(!u){var g,m=t.text.length-2;if(m>0&&a)for(var h=0;h<a.length;++h)null==a[h].to&&(g||(g=[])).push(new Qn(a[h].marker,null,null));for(var h=0;m>h;++h)p.push(g);p.push(s)}return p}function or(e){for(var t=0;t<e.length;++t){var n=e[t];null!=n.from&&n.from==n.to&&n.marker.clearWhenEmpty!==!1&&e.splice(t--,1)}return e.length?e:null}function lr(e,t){var n=pi(e,t),r=ir(e,t);if(!n)return r;if(!r)return n;for(var i=0;i<n.length;++i){var o=n[i],l=r[i];if(o&&l)e:for(var a=0;a<l.length;++a){for(var s=l[a],u=0;u<o.length;++u)if(o[u].marker==s.marker)continue e;o.push(s)}else l&&(n[i]=l)}return n}function ar(e,t,n){var r=null;if(e.iter(t.line,n.line+1,function(e){if(e.markedSpans)for(var t=0;t<e.markedSpans.length;++t){var 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n=this,r=n.cm,i=n.div=e.lineDiv;ne(i),Ml(i,"paste",function(e){J(e,r)}),Ml(i,"compositionstart",function(e){var t=e.data;if(n.composing={sel:r.doc.sel,data:t,startData:t},t){var i=r.doc.sel.primary(),o=r.getLine(i.head.line),l=o.indexOf(t,Math.max(0,i.head.ch-t.length));l>-1&&l<=i.head.ch&&(n.composing.sel=pe(Wo(i.head.line,l),Wo(i.head.line,l+t.length)))}}),Ml(i,"compositionupdate",function(e){n.composing.data=e.data}),Ml(i,"compositionend",function(e){var t=n.composing;t&&(e.data==t.startData||/\u200b/.test(e.data)||(t.data=e.data),setTimeout(function(){t.handled||n.applyComposition(t),n.composing==t&&(n.composing=null)},50))}),Ml(i,"touchstart",function(){n.forceCompositionEnd()}),Ml(i,"input",function(){n.composing||(Z(r)||!n.pollContent())&&Nt(n.cm,function(){Wt(r)})}),Ml(i,"copy",t),Ml(i,"cut",t)},prepareSelection:function(){var e=We(this.cm,!1);return e.focus=this.cm.state.focused,e},showSelection:function(e){e&&this.cm.display.view.length&&(e.focus&&this.showPrimarySelection(),this.showMultipleSelections(e))},showPrimarySelection:function(){var e=window.getSelection(),t=this.cm.doc.sel.primary(),n=se(this.cm,e.anchorNode,e.anchorOffset),r=se(this.cm,e.focusNode,e.focusOffset);if(!n||n.bad||!r||r.bad||0!=Io(X(n,r),t.from())||0!=Io(K(n,r),t.to())){var i=le(this.cm,t.from()),o=le(this.cm,t.to());if(i||o){var l=this.cm.display.view,a=e.rangeCount&&e.getRangeAt(0);if(i){if(!o){var s=l[l.length-1].measure,u=s.maps?s.maps[s.maps.length-1]:s.map;o={node:u[u.length-1],offset:u[u.length-2]-u[u.length-3]}}}else i={node:l[0].measure.map[2],offset:0};try{var c=_l(i.node,i.offset,o.offset,o.node)}catch(h){}c&&(e.removeAllRanges(),e.addRange(c),a&&null==e.anchorNode?e.addRange(a):fo&&this.startGracePeriod()),this.rememberSelection()}}},startGracePeriod:function(){var e=this;clearTimeout(this.gracePeriod),this.gracePeriod=setTimeout(function(){e.gracePeriod=!1,e.selectionChanged()&&e.cm.operation(function(){e.cm.curOp.selectionChanged=!0})},20)},showMultipleSelections:function(e){Ui(this.cm.display.cursorDiv,e.cursors),Ui(this.cm.display.selectionDiv,e.selection)},rememberSelection:function(){var e=window.getSelection();this.lastAnchorNode=e.anchorNode,this.lastAnchorOffset=e.anchorOffset,this.lastFocusNode=e.focusNode,this.lastFocusOffset=e.focusOffset},selectionInEditor:function(){var e=window.getSelection();if(!e.rangeCount)return!1;var t=e.getRangeAt(0).commonAncestorContainer;return Gl(this.div,t)},focus:function(){"nocursor"!=this.cm.options.readOnly&&this.div.focus()},blur:function(){this.div.blur()},getField:function(){return this.div},supportsTouch:function(){return!0},receivedFocus:function(){function e(){t.cm.state.focused&&(t.pollSelection(),t.polling.set(t.cm.options.pollInterval,e))}var t=this;this.selectionInEditor()?this.pollSelection():Nt(this.cm,function(){t.cm.curOp.selectionChanged=!0}),this.polling.set(this.cm.options.pollInterval,e)},selectionChanged:function(){var e=window.getSelection();return e.anchorNode!=this.lastAnchorNode||e.anchorOffset!=this.lastAnchorOffset||e.focusNode!=this.lastFocusNode||e.focusOffset!=this.lastFocusOffset},pollSelection:function(){if(!this.composing&&!this.gracePeriod&&this.selectionChanged()){var e=window.getSelection(),t=this.cm;this.rememberSelection();var n=se(t,e.anchorNode,e.anchorOffset),r=se(t,e.focusNode,e.focusOffset);n&&r&&Nt(t,function(){Te(t.doc,pe(n,r),El),(n.bad||r.bad)&&(t.curOp.selectionChanged=!0)})}},pollContent:function(){var e=this.cm,t=e.display,n=e.doc.sel.primary(),r=n.from(),i=n.to();if(r.line<t.viewFrom||i.line>t.viewTo-1)return!1;var o;if(r.line==t.viewFrom||0==(o=Pt(e,r.line)))var l=ei(t.view[0].line),a=t.view[0].node;else var l=ei(t.view[o].line),a=t.view[o-1].node.nextSibling;var s=Pt(e,i.line);if(s==t.view.length-1)var u=t.viewTo-1,c=t.lineDiv.lastChild;else var u=ei(t.view[s+1].line)-1,c=t.view[s+1].node.previousSibling;for(var h=e.doc.splitLines(ce(e,a,c,l,u)),d=Zr(e.doc,Wo(l,0),Wo(u,Yr(e.doc,u).text.length));h.length>1&&d.length>1;)if(Hi(h)==Hi(d))h.pop(),d.pop(),u--;else{if(h[0]!=d[0])break;h.shift(),d.shift(),l++}for(var f=0,p=0,g=h[0],m=d[0],v=Math.min(g.length,m.length);v>f&&g.charCodeAt(f)==m.charCodeAt(f);)++f;for(var y=Hi(h),b=Hi(d),x=Math.min(y.length-(1==h.length?f:0),b.length-(1==d.length?f:0));x>p&&y.charCodeAt(y.length-p-1)==b.charCodeAt(b.length-p-1);)++p;h[h.length-1]=y.slice(0,y.length-p),h[0]=h[0].slice(f);var w=Wo(l,f),C=Wo(u,d.length?Hi(d).length-p:0);return h.length>1||h[0]||Io(w,C)?(Hn(e.doc,h,w,C,"+input"),!0):void 0},ensurePolled:function(){this.forceCompositionEnd()},reset:function(){this.forceCompositionEnd()},forceCompositionEnd:function(){this.composing&&!this.composing.handled&&(this.applyComposition(this.composing),this.composing.handled=!0,this.div.blur(),this.div.focus())},applyComposition:function(e){Z(this.cm)?At(this.cm,Wt)(this.cm):e.data&&e.data!=e.startData&&At(this.cm,Q)(this.cm,e.data,0,e.sel)},setUneditable:function(e){e.contentEditable="false"},onKeyPress:function(e){e.preventDefault(),Z(this.cm)||At(this.cm,Q)(this.cm,String.fromCharCode(null==e.charCode?e.keyCode:e.charCode),0)},readOnlyChanged:function(e){this.div.contentEditable=String("nocursor"!=e)},onContextMenu:Wi,resetPosition:Wi,needsContentAttribute:!0},oe.prototype),e.inputStyles={textarea:re,contenteditable:oe},he.prototype={primary:function(){return this.ranges[this.primIndex]},equals:function(e){if(e==this)return!0;if(e.primIndex!=this.primIndex||e.ranges.length!=this.ranges.length)return!1;for(var t=0;t<this.ranges.length;t++){var n=this.ranges[t],r=e.ranges[t];if(0!=Io(n.anchor,r.anchor)||0!=Io(n.head,r.head))return!1}return!0},deepCopy:function(){for(var e=[],t=0;t<this.ranges.length;t++)e[t]=new de(V(this.ranges[t].anchor),V(this.ranges[t].head));return new he(e,this.primIndex)},somethingSelected:function(){for(var e=0;e<this.ranges.length;e++)if(!this.ranges[e].empty())return!0;return!1},contains:function(e,t){t||(t=e);for(var n=0;n<this.ranges.length;n++){var r=this.ranges[n];if(Io(t,r.from())>=0&&Io(e,r.to())<=0)return n}return-1}},de.prototype={from:function(){return X(this.anchor,this.head)},to:function(){return K(this.anchor,this.head)},empty:function(){return this.head.line==this.anchor.line&&this.head.ch==this.anchor.ch}};var Po,Bo,zo,_o={left:0,right:0,top:0,bottom:0},Ro=null,qo=0,Uo=0,Go=0,jo=null;mo?jo=-.53:fo?jo=15:xo?jo=-.7:Co&&(jo=-1/3);var $o=function(e){var t=e.wheelDeltaX,n=e.wheelDeltaY;return null==t&&e.detail&&e.axis==e.HORIZONTAL_AXIS&&(t=e.detail),null==n&&e.detail&&e.axis==e.VERTICAL_AXIS?n=e.detail:null==n&&(n=e.wheelDelta),{x:t,y:n}};e.wheelEventPixels=function(e){var t=$o(e);return t.x*=jo,t.y*=jo,t};var Vo=new Ai,Ko=null,Xo=e.changeEnd=function(e){return e.text?Wo(e.from.line+e.text.length-1,Hi(e.text).length+(1==e.text.length?e.from.ch:0)):e.to};e.prototype={constructor:e,focus:function(){window.focus(),this.display.input.focus()},setOption:function(e,t){var n=this.options,r=n[e];(n[e]!=t||"mode"==e)&&(n[e]=t,Zo.hasOwnProperty(e)&&At(this,Zo[e])(this,t,r))},getOption:function(e){return this.options[e]},getDoc:function(){return this.doc},addKeyMap:function(e,t){this.state.keyMaps[t?"push":"unshift"]($n(e))},removeKeyMap:function(e){for(var t=this.state.keyMaps,n=0;n<t.length;++n)if(t[n]==e||t[n].name==e)return t.splice(n,1),!0},addOverlay:Dt(function(t,n){var r=t.token?t:e.getMode(this.options,t);if(r.startState)throw new Error("Overlays may not be stateful.");this.state.overlays.push({mode:r,modeSpec:t,opaque:n&&n.opaque}),this.state.modeGen++,Wt(this)}),removeOverlay:Dt(function(e){for(var t=this.state.overlays,n=0;n<t.length;++n){var r=t[n].modeSpec;if(r==e||"string"==typeof e&&r.name==e)return t.splice(n,1),this.state.modeGen++,void Wt(this)}}),indentLine:Dt(function(e,t,n){"string"!=typeof t&&"number"!=typeof t&&(t=null==t?this.options.smartIndent?"smart":"prev":t?"add":"subtract"),ye(this.doc,e)&&zn(this,e,t,n)}),indentSelection:Dt(function(e){for(var t=this.doc.sel.ranges,n=-1,r=0;r<t.length;r++){var i=t[r];if(i.empty())i.head.line>n&&(zn(this,i.head.line,e,!0),n=i.head.line,r==this.doc.sel.primIndex&&Pn(this));else{var o=i.from(),l=i.to(),a=Math.max(n,o.line);n=Math.min(this.lastLine(),l.line-(l.ch?0:1))+1;for(var s=a;n>s;++s)zn(this,s,e);var u=this.doc.sel.ranges;0==o.ch&&t.length==u.length&&u[r].from().ch>0&&Se(this.doc,r,new de(o,u[r].to()),El)}}}),getTokenAt:function(e,t){return Hr(this,e,t)},getLineTokens:function(e,t){return Hr(this,Wo(e),t,!0)},getTokenTypeAt:function(e){e=me(this.doc,e);var t,n=Wr(this,Yr(this.doc,e.line)),r=0,i=(n.length-1)/2,o=e.ch;if(0==o)t=n[2];else for(;;){var l=r+i>>1;if((l?n[2*l-1]:0)>=o)i=l;else{if(!(n[2*l+1]<o)){t=n[2*l+2];break}r=l+1}}var a=t?t.indexOf("cm-overlay "):-1;return 0>a?t:0==a?null:t.slice(0,a-1)},getModeAt:function(t){var n=this.doc.mode;return n.innerMode?e.innerMode(n,this.getTokenAt(t).state).mode:n},getHelper:function(e,t){return this.getHelpers(e,t)[0]},getHelpers:function(e,t){var n=[];if(!rl.hasOwnProperty(t))return n;var r=rl[t],i=this.getModeAt(e);if("string"==typeof i[t])r[i[t]]&&n.push(r[i[t]]);else if(i[t])for(var o=0;o<i[t].length;o++){var l=r[i[t][o]];l&&n.push(l)}else i.helperType&&r[i.helperType]?n.push(r[i.helperType]):r[i.name]&&n.push(r[i.name]);for(var o=0;o<r._global.length;o++){var a=r._global[o];a.pred(i,this)&&-1==Oi(n,a.val)&&n.push(a.val)}return n},getStateAfter:function(e,t){var n=this.doc;return e=ge(n,null==e?n.first+n.size-1:e),Re(this,e+1,t)},cursorCoords:function(e,t){var n,r=this.doc.sel.primary();return n=null==e?r.head:"object"==typeof e?me(this.doc,e):e?r.from():r.to(),dt(this,n,t||"page")},charCoords:function(e,t){return ht(this,me(this.doc,e),t||"page")},coordsChar:function(e,t){return e=ct(this,e,t||"page"),gt(this,e.left,e.top)},lineAtHeight:function(e,t){return e=ct(this,{top:e,left:0},t||"page").top,ti(this.doc,e+this.display.viewOffset)},heightAtLine:function(e,t){var n,r=!1;if("number"==typeof e){var i=this.doc.first+this.doc.size-1;e<this.doc.first?e=this.doc.first:e>i&&(e=i,r=!0),n=Yr(this.doc,e)}else n=e;return ut(this,n,{top:0,left:0},t||"page").top+(r?this.doc.height-ni(n):0)},defaultTextHeight:function(){return vt(this.display)},defaultCharWidth:function(){return yt(this.display)},setGutterMarker:Dt(function(e,t,n){return _n(this.doc,e,"gutter",function(e){var r=e.gutterMarkers||(e.gutterMarkers={});return r[t]=n,!n&&zi(r)&&(e.gutterMarkers=null),!0})}),clearGutter:Dt(function(e){var t=this,n=t.doc,r=n.first;n.iter(function(n){n.gutterMarkers&&n.gutterMarkers[e]&&(n.gutterMarkers[e]=null,It(t,r,"gutter"),zi(n.gutterMarkers)&&(n.gutterMarkers=null)),++r})}),lineInfo:function(e){if("number"==typeof e){if(!ye(this.doc,e))return null;var t=e;if(e=Yr(this.doc,e),!e)return null}else{var t=ei(e);if(null==t)return null}return{line:t,handle:e,text:e.text,gutterMarkers:e.gutterMarkers,textClass:e.textClass,bgClass:e.bgClass,wrapClass:e.wrapClass,widgets:e.widgets}},getViewport:function(){return{from:this.display.viewFrom,to:this.display.viewTo}},addWidget:function(e,t,n,r,i){var o=this.display;e=dt(this,me(this.doc,e));var l=e.bottom,a=e.left;if(t.style.position="absolute",t.setAttribute("cm-ignore-events","true"),this.display.input.setUneditable(t),o.sizer.appendChild(t),"over"==r)l=e.top;else if("above"==r||"near"==r){var s=Math.max(o.wrapper.clientHeight,this.doc.height),u=Math.max(o.sizer.clientWidth,o.lineSpace.clientWidth);("above"==r||e.bottom+t.offsetHeight>s)&&e.top>t.offsetHeight?l=e.top-t.offsetHeight:e.bottom+t.offsetHeight<=s&&(l=e.bottom),a+t.offsetWidth>u&&(a=u-t.offsetWidth)}t.style.top=l+"px",t.style.left=t.style.right="","right"==i?(a=o.sizer.clientWidth-t.offsetWidth,t.style.right="0px"):("left"==i?a=0:"middle"==i&&(a=(o.sizer.clientWidth-t.offsetWidth)/2),t.style.left=a+"px"),n&&Wn(this,a,l,a+t.offsetWidth,l+t.offsetHeight)},triggerOnKeyDown:Dt(hn),triggerOnKeyPress:Dt(pn),triggerOnKeyUp:fn,execCommand:function(e){return ll.hasOwnProperty(e)?ll[e].call(null,this):void 0},triggerElectric:Dt(function(e){ee(this,e)}),findPosH:function(e,t,n,r){var i=1;0>t&&(i=-1,t=-t);for(var o=0,l=me(this.doc,e);t>o&&(l=qn(this.doc,l,i,n,r),!l.hitSide);++o);return l},moveH:Dt(function(e,t){var n=this;n.extendSelectionsBy(function(r){return n.display.shift||n.doc.extend||r.empty()?qn(n.doc,r.head,e,t,n.options.rtlMoveVisually):0>e?r.from():r.to()},Il)}),deleteH:Dt(function(e,t){var n=this.doc.sel,r=this.doc;n.somethingSelected()?r.replaceSelection("",null,"+delete"):Rn(this,function(n){var i=qn(r,n.head,e,t,!1);return 0>e?{from:i,to:n.head}:{from:n.head,to:i}})}),findPosV:function(e,t,n,r){var i=1,o=r;0>t&&(i=-1,t=-t);for(var l=0,a=me(this.doc,e);t>l;++l){var s=dt(this,a,"div");if(null==o?o=s.left:s.left=o,a=Un(this,s,i,n),a.hitSide)break}return a},moveV:Dt(function(e,t){var n=this,r=this.doc,i=[],o=!n.display.shift&&!r.extend&&r.sel.somethingSelected();if(r.extendSelectionsBy(function(l){if(o)return 0>e?l.from():l.to();var a=dt(n,l.head,"div");null!=l.goalColumn&&(a.left=l.goalColumn),i.push(a.left);var s=Un(n,a,e,t);return"page"==t&&l==r.sel.primary()&&Fn(n,null,ht(n,s,"div").top-a.top),s},Il),i.length)for(var l=0;l<r.sel.ranges.length;l++)r.sel.ranges[l].goalColumn=i[l]}),findWordAt:function(e){var t=this.doc,n=Yr(t,e.line).text,r=e.ch,i=e.ch;if(n){var o=this.getHelper(e,"wordChars");(e.xRel<0||i==n.length)&&r?--r:++i;for(var l=n.charAt(r),a=Bi(l,o)?function(e){return Bi(e,o)}:/\s/.test(l)?function(e){return/\s/.test(e)}:function(e){return!/\s/.test(e)&&!Bi(e)};r>0&&a(n.charAt(r-1));)--r;for(;i<n.length&&a(n.charAt(i));)++i}return new de(Wo(e.line,r),Wo(e.line,i))},toggleOverwrite:function(e){(null==e||e!=this.state.overwrite)&&((this.state.overwrite=!this.state.overwrite)?Kl(this.display.cursorDiv,"CodeMirror-overwrite"):Vl(this.display.cursorDiv,"CodeMirror-overwrite"),Al(this,"overwriteToggle",this,this.state.overwrite))},hasFocus:function(){return this.display.input.getField()==Gi()},scrollTo:Dt(function(e,t){(null!=e||null!=t)&&Bn(this),null!=e&&(this.curOp.scrollLeft=e),null!=t&&(this.curOp.scrollTop=t)}),getScrollInfo:function(){var e=this.display.scroller;return{left:e.scrollLeft,top:e.scrollTop,height:e.scrollHeight-je(this)-this.display.barHeight,width:e.scrollWidth-je(this)-this.display.barWidth,clientHeight:Ve(this),clientWidth:$e(this)}},scrollIntoView:Dt(function(e,t){if(null==e?(e={from:this.doc.sel.primary().head,to:null},null==t&&(t=this.options.cursorScrollMargin)):"number"==typeof e?e={from:Wo(e,0),to:null}:null==e.from&&(e={from:e,to:null}),e.to||(e.to=e.from),e.margin=t||0,null!=e.from.line)Bn(this),this.curOp.scrollToPos=e;else{var n=In(this,Math.min(e.from.left,e.to.left),Math.min(e.from.top,e.to.top)-e.margin,Math.max(e.from.right,e.to.right),Math.max(e.from.bottom,e.to.bottom)+e.margin);this.scrollTo(n.scrollLeft,n.scrollTop)}}),setSize:Dt(function(e,t){function n(e){return"number"==typeof e||/^\d+$/.test(String(e))?e+"px":e}var r=this;null!=e&&(r.display.wrapper.style.width=n(e)),null!=t&&(r.display.wrapper.style.height=n(t)),r.options.lineWrapping&&ot(this);var i=r.display.viewFrom;r.doc.iter(i,r.display.viewTo,function(e){if(e.widgets)for(var t=0;t<e.widgets.length;t++)if(e.widgets[t].noHScroll){It(r,i,"widget");break}++i}),r.curOp.forceUpdate=!0,Al(r,"refresh",this)}),operation:function(e){return Nt(this,e)},refresh:Dt(function(){var e=this.display.cachedTextHeight;Wt(this),this.curOp.forceUpdate=!0,lt(this),this.scrollTo(this.doc.scrollLeft,this.doc.scrollTop),c(this),(null==e||Math.abs(e-vt(this.display))>.5)&&l(this),Al(this,"refresh",this)}),swapDoc:Dt(function(e){var t=this.doc;return t.cm=null,Xr(this,e),lt(this),this.display.input.reset(),this.scrollTo(e.scrollLeft,e.scrollTop),this.curOp.forceScroll=!0,Si(this,"swapDoc",this,t),t}),getInputField:function(){return this.display.input.getField()},getWrapperElement:function(){return this.display.wrapper},getScrollerElement:function(){return this.display.scroller},getGutterElement:function(){return this.display.gutters}},Ni(e);var 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t?{name:t}:t||{name:"null"}},e.getMode=function(t,n){var n=e.resolveMode(n),r=Jo[n.name];if(!r)return e.getMode(t,"text/plain");var i=r(t,n);if(tl.hasOwnProperty(n.name)){var o=tl[n.name];for(var l in o)o.hasOwnProperty(l)&&(i.hasOwnProperty(l)&&(i["_"+l]=i[l]),i[l]=o[l])}if(i.name=n.name,n.helperType&&(i.helperType=n.helperType),n.modeProps)for(var l in n.modeProps)i[l]=n.modeProps[l];return i},e.defineMode("null",function(){return{token:function(e){e.skipToEnd()}}}),e.defineMIME("text/plain","null");var tl=e.modeExtensions={};e.extendMode=function(e,t){var n=tl.hasOwnProperty(e)?tl[e]:tl[e]={};Fi(t,n)},e.defineExtension=function(t,n){e.prototype[t]=n},e.defineDocExtension=function(e,t){xl.prototype[e]=t},e.defineOption=Gn;var nl=[];e.defineInitHook=function(e){nl.push(e)};var rl=e.helpers={};e.registerHelper=function(t,n,r){rl.hasOwnProperty(t)||(rl[t]=e[t]={_global:[]}),rl[t][n]=r},e.registerGlobalHelper=function(t,n,r,i){e.registerHelper(t,n,i),rl[t]._global.push({pred:r,val:i})};var il=e.copyState=function(e,t){if(t===!0)return t;if(e.copyState)return e.copyState(t);var n={};for(var r in t){var i=t[r];i instanceof Array&&(i=i.concat([])),n[r]=i}return n},ol=e.startState=function(e,t,n){return e.startState?e.startState(t,n):!0};e.innerMode=function(e,t){for(;e.innerMode;){var n=e.innerMode(t);if(!n||n.mode==e)break;t=n.state,e=n.mode}return n||{mode:e,state:t}};var ll=e.commands={selectAll:function(e){e.setSelection(Wo(e.firstLine(),0),Wo(e.lastLine()),El)},singleSelection:function(e){e.setSelection(e.getCursor("anchor"),e.getCursor("head"),El)},killLine:function(e){Rn(e,function(t){if(t.empty()){var n=Yr(e.doc,t.head.line).text.length;return t.head.ch==n&&t.head.line<e.lastLine()?{from:t.head,to:Wo(t.head.line+1,0)}:{from:t.head,to:Wo(t.head.line,n)}}return{from:t.from(),to:t.to()}})},deleteLine:function(e){Rn(e,function(t){return{from:Wo(t.from().line,0),to:me(e.doc,Wo(t.to().line+1,0))}})},delLineLeft:function(e){Rn(e,function(e){return{from:Wo(e.from().line,0),to:e.from()}})},delWrappedLineLeft:function(e){Rn(e,function(t){var n=e.charCoords(t.head,"div").top+5,r=e.coordsChar({left:0,top:n},"div");return{from:r,to:t.from()}})},delWrappedLineRight:function(e){Rn(e,function(t){var n=e.charCoords(t.head,"div").top+5,r=e.coordsChar({left:e.display.lineDiv.offsetWidth+100,top:n},"div");return{from:t.from(),to:r}})},undo:function(e){e.undo()},redo:function(e){e.redo()},undoSelection:function(e){e.undoSelection()},redoSelection:function(e){e.redoSelection()},goDocStart:function(e){e.extendSelection(Wo(e.firstLine(),0))},goDocEnd:function(e){e.extendSelection(Wo(e.lastLine()))},goLineStart:function(e){e.extendSelectionsBy(function(t){return io(e,t.head.line)},{origin:"+move",bias:1})},goLineStartSmart:function(e){e.extendSelectionsBy(function(t){return lo(e,t.head)},{origin:"+move",bias:1})},goLineEnd:function(e){e.extendSelectionsBy(function(t){return oo(e,t.head.line)},{origin:"+move",bias:-1})},goLineRight:function(e){e.extendSelectionsBy(function(t){var n=e.charCoords(t.head,"div").top+5;return e.coordsChar({left:e.display.lineDiv.offsetWidth+100,top:n},"div")},Il)},goLineLeft:function(e){e.extendSelectionsBy(function(t){var n=e.charCoords(t.head,"div").top+5;return e.coordsChar({left:0,top:n},"div")},Il)},goLineLeftSmart:function(e){e.extendSelectionsBy(function(t){var n=e.charCoords(t.head,"div").top+5,r=e.coordsChar({left:0,top:n},"div");return r.ch<e.getLine(r.line).search(/\S/)?lo(e,t.head):r},Il)},goLineUp:function(e){e.moveV(-1,"line")},goLineDown:function(e){e.moveV(1,"line")},goPageUp:function(e){e.moveV(-1,"page")},goPageDown:function(e){e.moveV(1,"page")},goCharLeft:function(e){e.moveH(-1,"char")},goCharRight:function(e){e.moveH(1,"char")},goColumnLeft:function(e){e.moveH(-1,"column")},goColumnRight:function(e){e.moveH(1,"column")},goWordLeft:function(e){e.moveH(-1,"word")},goGroupRight:function(e){e.moveH(1,"group")},goGroupLeft:function(e){e.moveH(-1,"group")},goWordRight:function(e){e.moveH(1,"word")},delCharBefore:function(e){e.deleteH(-1,"char")},delCharAfter:function(e){e.deleteH(1,"char")},delWordBefore:function(e){e.deleteH(-1,"word")},delWordAfter:function(e){e.deleteH(1,"word")},delGroupBefore:function(e){e.deleteH(-1,"group")},delGroupAfter:function(e){e.deleteH(1,"group")},indentAuto:function(e){e.indentSelection("smart")},indentMore:function(e){e.indentSelection("add")},indentLess:function(e){e.indentSelection("subtract")},insertTab:function(e){e.replaceSelection("	")},insertSoftTab:function(e){for(var t=[],n=e.listSelections(),r=e.options.tabSize,i=0;i<n.length;i++){var o=n[i].from(),l=Fl(e.getLine(o.line),o.ch,r);t.push(new Array(r-l%r+1).join(" "))}e.replaceSelections(t)},defaultTab:function(e){e.somethingSelected()?e.indentSelection("add"):e.execCommand("insertTab")},transposeChars:function(e){Nt(e,function(){for(var t=e.listSelections(),n=[],r=0;r<t.length;r++){var i=t[r].head,o=Yr(e.doc,i.line).text;if(o)if(i.ch==o.length&&(i=new Wo(i.line,i.ch-1)),i.ch>0)i=new Wo(i.line,i.ch+1),e.replaceRange(o.charAt(i.ch-1)+o.charAt(i.ch-2),Wo(i.line,i.ch-2),i,"+transpose");else if(i.line>e.doc.first){var l=Yr(e.doc,i.line-1).text;l&&e.replaceRange(o.charAt(0)+e.doc.lineSeparator()+l.charAt(l.length-1),Wo(i.line-1,l.length-1),Wo(i.line,1),"+transpose")}n.push(new de(i,i))}e.setSelections(n)})},newlineAndIndent:function(e){Nt(e,function(){for(var t=e.listSelections().length,n=0;t>n;n++){var r=e.listSelections()[n];e.replaceRange(e.doc.lineSeparator(),r.anchor,r.head,"+input"),e.indentLine(r.from().line+1,null,!0)}Pn(e)})},toggleOverwrite:function(e){e.toggleOverwrite()}},al=e.keyMap={};al.basic={Left:"goCharLeft",Right:"goCharRight",Up:"goLineUp",Down:"goLineDown",End:"goLineEnd",Home:"goLineStartSmart",PageUp:"goPageUp",PageDown:"goPageDown",Delete:"delCharAfter",Backspace:"delCharBefore","Shift-Backspace":"delCharBefore",Tab:"defaultTab","Shift-Tab":"indentAuto",Enter:"newlineAndIndent",Insert:"toggleOverwrite",Esc:"singleSelection"},al.pcDefault={"Ctrl-A":"selectAll","Ctrl-D":"deleteLine","Ctrl-Z":"undo","Shift-Ctrl-Z":"redo","Ctrl-Y":"redo","Ctrl-Home":"goDocStart","Ctrl-End":"goDocEnd","Ctrl-Up":"goLineUp","Ctrl-Down":"goLineDown","Ctrl-Left":"goGroupLeft","Ctrl-Right":"goGroupRight","Alt-Left":"goLineStart","Alt-Right":"goLineEnd","Ctrl-Backspace":"delGroupBefore","Ctrl-Delete":"delGroupAfter","Ctrl-S":"save","Ctrl-F":"find","Ctrl-G":"findNext","Shift-Ctrl-G":"findPrev","Shift-Ctrl-F":"replace","Shift-Ctrl-R":"replaceAll","Ctrl-[":"indentLess","Ctrl-]":"indentMore","Ctrl-U":"undoSelection","Shift-Ctrl-U":"redoSelection","Alt-U":"redoSelection",fallthrough:"basic"},al.emacsy={"Ctrl-F":"goCharRight","Ctrl-B":"goCharLeft","Ctrl-P":"goLineUp","Ctrl-N":"goLineDown","Alt-F":"goWordRight","Alt-B":"goWordLeft","Ctrl-A":"goLineStart","Ctrl-E":"goLineEnd","Ctrl-V":"goPageDown","Shift-Ctrl-V":"goPageUp","Ctrl-D":"delCharAfter","Ctrl-H":"delCharBefore","Alt-D":"delWordAfter","Alt-Backspace":"delWordBefore","Ctrl-K":"killLine","Ctrl-T":"transposeChars"},al.macDefault={"Cmd-A":"selectAll","Cmd-D":"deleteLine","Cmd-Z":"undo","Shift-Cmd-Z":"redo","Cmd-Y":"redo","Cmd-Home":"goDocStart","Cmd-Up":"goDocStart","Cmd-End":"goDocEnd","Cmd-Down":"goDocEnd","Alt-Left":"goGroupLeft","Alt-Right":"goGroupRight","Cmd-Left":"goLineLeft","Cmd-Right":"goLineRight","Alt-Backspace":"delGroupBefore","Ctrl-Alt-Backspace":"delGroupAfter","Alt-Delete":"delGroupAfter","Cmd-S":"save","Cmd-F":"find","Cmd-G":"findNext","Shift-Cmd-G":"findPrev","Cmd-Alt-F":"replace","Shift-Cmd-Alt-F":"replaceAll","Cmd-[":"indentLess","Cmd-]":"indentMore","Cmd-Backspace":"delWrappedLineLeft","Cmd-Delete":"delWrappedLineRight","Cmd-U":"undoSelection","Shift-Cmd-U":"redoSelection","Ctrl-Up":"goDocStart","Ctrl-Down":"goDocEnd",fallthrough:["basic","emacsy"]},al["default"]=To?al.macDefault:al.pcDefault,e.normalizeKeyMap=function(e){var t={};for(var n in e)if(e.hasOwnProperty(n)){var r=e[n];if(/^(name|fallthrough|(de|at)tach)$/.test(n))continue;if("..."==r){delete e[n];continue}for(var i=Ei(n.split(" "),jn),o=0;o<i.length;o++){var l,a;o==i.length-1?(a=i.join(" "),l=r):(a=i.slice(0,o+1).join(" "),l="...");var s=t[a];if(s){if(s!=l)throw new Error("Inconsistent bindings for "+a)}else t[a]=l}delete e[n]}for(var u in t)e[u]=t[u];return e};var sl=e.lookupKey=function(e,t,n,r){t=$n(t);var i=t.call?t.call(e,r):t[e];if(i===!1)return"nothing";if("..."===i)return"multi";if(null!=i&&n(i))return"handled";if(t.fallthrough){if("[object Array]"!=Object.prototype.toString.call(t.fallthrough))return sl(e,t.fallthrough,n,r);for(var o=0;o<t.fallthrough.length;o++){var l=sl(e,t.fallthrough[o],n,r);if(l)return l}}},ul=e.isModifierKey=function(e){var t="string"==typeof e?e:ta[e.keyCode];return"Ctrl"==t||"Alt"==t||"Shift"==t||"Mod"==t},cl=e.keyName=function(e,t){if(wo&&34==e.keyCode&&e["char"])return!1;var n=ta[e.keyCode],r=n;return null==r||e.altGraphKey?!1:(e.altKey&&"Alt"!=n&&(r="Alt-"+r),(Do?e.metaKey:e.ctrlKey)&&"Ctrl"!=n&&(r="Ctrl-"+r),(Do?e.ctrlKey:e.metaKey)&&"Cmd"!=n&&(r="Cmd-"+r),!t&&e.shiftKey&&"Shift"!=n&&(r="Shift-"+r),r)};e.fromTextArea=function(t,n){function r(){t.value=u.getValue()}if(n=n?Fi(n):{},n.value=t.value,!n.tabindex&&t.tabIndex&&(n.tabindex=t.tabIndex),!n.placeholder&&t.placeholder&&(n.placeholder=t.placeholder),null==n.autofocus){var i=Gi();n.autofocus=i==t||null!=t.getAttribute("autofocus")&&i==document.body}if(t.form&&(Ml(t.form,"submit",r),!n.leaveSubmitMethodAlone)){var o=t.form,l=o.submit;try{var a=o.submit=function(){r(),o.submit=l,o.submit(),o.submit=a}}catch(s){}}n.finishInit=function(e){e.save=r,e.getTextArea=function(){return t},e.toTextArea=function(){e.toTextArea=isNaN,r(),t.parentNode.removeChild(e.getWrapperElement()),t.style.display="",t.form&&(Nl(t.form,"submit",r),"function"==typeof t.form.submit&&(t.form.submit=l))}},t.style.display="none";var u=e(function(e){t.parentNode.insertBefore(e,t.nextSibling)},n);return u};var hl=e.StringStream=function(e,t){this.pos=this.start=0,this.string=e,this.tabSize=t||8,this.lastColumnPos=this.lastColumnValue=0,this.lineStart=0};hl.prototype={eol:function(){return this.pos>=this.string.length},sol:function(){return this.pos==this.lineStart},peek:function(){return this.string.charAt(this.pos)||void 0},next:function(){return this.pos<this.string.length?this.string.charAt(this.pos++):void 0},eat:function(e){var t=this.string.charAt(this.pos);if("string"==typeof e)var n=t==e;else var n=t&&(e.test?e.test(t):e(t));return n?(++this.pos,t):void 0},eatWhile:function(e){for(var t=this.pos;this.eat(e););return this.pos>t},eatSpace:function(){for(var e=this.pos;/[\s\u00a0]/.test(this.string.charAt(this.pos));)++this.pos;return this.pos>e},skipToEnd:function(){this.pos=this.string.length},skipTo:function(e){var t=this.string.indexOf(e,this.pos);return t>-1?(this.pos=t,!0):void 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dl=0,fl=e.TextMarker=function(e,t){this.lines=[],this.type=t,this.doc=e,this.id=++dl};Ni(fl),fl.prototype.clear=function(){if(!this.explicitlyCleared){var e=this.doc.cm,t=e&&!e.curOp;if(t&&bt(e),Ti(this,"clear")){var n=this.find();n&&Si(this,"clear",n.from,n.to)}for(var r=null,i=null,o=0;o<this.lines.length;++o){var l=this.lines[o],a=Jn(l.markedSpans,this);e&&!this.collapsed?It(e,ei(l),"text"):e&&(null!=a.to&&(i=ei(l)),null!=a.from&&(r=ei(l))),l.markedSpans=er(l.markedSpans,a),null==a.from&&this.collapsed&&!wr(this.doc,l)&&e&&Jr(l,vt(e.display))}if(e&&this.collapsed&&!e.options.lineWrapping)for(var o=0;o<this.lines.length;++o){var s=vr(this.lines[o]),u=h(s);u>e.display.maxLineLength&&(e.display.maxLine=s,e.display.maxLineLength=u,e.display.maxLineChanged=!0)}null!=r&&e&&this.collapsed&&Wt(e,r,i+1),this.lines.length=0,this.explicitlyCleared=!0,this.atomic&&this.doc.cantEdit&&(this.doc.cantEdit=!1,e&&De(e.doc)),e&&Si(e,"markerCleared",e,this),t&&wt(e),this.parent&&this.parent.clear()}},fl.prototype.find=function(e,t){null==e&&"bookmark"==this.type&&(e=1);for(var n,r,i=0;i<this.lines.length;++i){var o=this.lines[i],l=Jn(o.markedSpans,this);if(null!=l.from&&(n=Wo(t?o:ei(o),l.from),-1==e))return n;if(null!=l.to&&(r=Wo(t?o:ei(o),l.to),1==e))return r}return n&&{from:n,to:r}},fl.prototype.changed=function(){var e=this.find(-1,!0),t=this,n=this.doc.cm;e&&n&&Nt(n,function(){var r=e.line,i=ei(e.line),o=Qe(n,i);if(o&&(it(o),n.curOp.selectionChanged=n.curOp.forceUpdate=!0),n.curOp.updateMaxLine=!0,!wr(t.doc,r)&&null!=t.height){var l=t.height;t.height=null;var a=kr(t)-l;a&&Jr(r,r.height+a)}})},fl.prototype.attachLine=function(e){if(!this.lines.length&&this.doc.cm){var t=this.doc.cm.curOp;t.maybeHiddenMarkers&&-1!=Oi(t.maybeHiddenMarkers,this)||(t.maybeUnhiddenMarkers||(t.maybeUnhiddenMarkers=[])).push(this)}this.lines.push(e)},fl.prototype.detachLine=function(e){if(this.lines.splice(Oi(this.lines,e),1),!this.lines.length&&this.doc.cm){var t=this.doc.cm.curOp;(t.maybeHiddenMarkers||(t.maybeHiddenMarkers=[])).push(this)}};var dl=0,pl=e.SharedTextMarker=function(e,t){this.markers=e,this.primary=t;for(var n=0;n<e.length;++n)e[n].parent=this};Ni(pl),pl.prototype.clear=function(){if(!this.explicitlyCleared){this.explicitlyCleared=!0;for(var e=0;e<this.markers.length;++e)this.markers[e].clear();Si(this,"clear")}},pl.prototype.find=function(e,t){return this.primary.find(e,t)};var gl=e.LineWidget=function(e,t,n){if(n)for(var r in n)n.hasOwnProperty(r)&&(this[r]=n[r]);this.doc=e,this.node=t};Ni(gl),gl.prototype.clear=function(){var e=this.doc.cm,t=this.line.widgets,n=this.line,r=ei(n);if(null!=r&&t){for(var i=0;i<t.length;++i)t[i]==this&&t.splice(i--,1);t.length||(n.widgets=null);var o=kr(this);Jr(n,Math.max(0,n.height-o)),e&&Nt(e,function(){Sr(e,n,-o),It(e,r,"widget")})}},gl.prototype.changed=function(){var e=this.height,t=this.doc.cm,n=this.line;this.height=null;var r=kr(this)-e;r&&(Jr(n,n.height+r),t&&Nt(t,function(){t.curOp.forceUpdate=!0,Sr(t,n,r)}))};var ml=e.Line=function(e,t,n){this.text=e,ur(this,t),this.height=n?n(this):1};Ni(ml),ml.prototype.lineNo=function(){return ei(this)};var vl={},yl={};$r.prototype={chunkSize:function(){return this.lines.length},removeInner:function(e,t){for(var n=e,r=e+t;r>n;++n){var i=this.lines[n];this.height-=i.height,Tr(i),Si(i,"delete")}this.lines.splice(e,t)},collapse:function(e){e.push.apply(e,this.lines)},insertInner:function(e,t,n){this.height+=n,this.lines=this.lines.slice(0,e).concat(t).concat(this.lines.slice(e));for(var r=0;r<t.length;++r)t[r].parent=this},iterN:function(e,t,n){for(var r=e+t;r>e;++e)if(n(this.lines[e]))return!0}},Vr.prototype={chunkSize:function(){return this.size},removeInner:function(e,t){this.size-=t;for(var n=0;n<this.children.length;++n){var r=this.children[n],i=r.chunkSize();if(i>e){var o=Math.min(t,i-e),l=r.height;if(r.removeInner(e,o),this.height-=l-r.height,i==o&&(this.children.splice(n--,1),r.parent=null),0==(t-=o))break;e=0}else e-=i}if(this.size-t<25&&(this.children.length>1||!(this.children[0]instanceof $r))){var a=[];this.collapse(a),this.children=[new $r(a)],this.children[0].parent=this}},collapse:function(e){for(var t=0;t<this.children.length;++t)this.children[t].collapse(e)},insertInner:function(e,t,n){this.size+=t.length,this.height+=n;for(var r=0;r<this.children.length;++r){var i=this.children[r],o=i.chunkSize();if(o>=e){if(i.insertInner(e,t,n),i.lines&&i.lines.length>50){for(;i.lines.length>50;){var l=i.lines.splice(i.lines.length-25,25),a=new $r(l);i.height-=a.height,this.children.splice(r+1,0,a),a.parent=this}this.maybeSpill()}break}e-=o}},maybeSpill:function(){if(!(this.children.length<=10)){var e=this;do{var t=e.children.splice(e.children.length-5,5),n=new Vr(t);if(e.parent){e.size-=n.size,e.height-=n.height;var r=Oi(e.parent.children,e);e.parent.children.splice(r+1,0,n)}else{var i=new Vr(e.children);i.parent=e,e.children=[i,n],e=i}n.parent=e.parent}while(e.children.length>10);e.parent.maybeSpill()}},iterN:function(e,t,n){for(var r=0;r<this.children.length;++r){var i=this.children[r],o=i.chunkSize();if(o>e){var l=Math.min(t,o-e);if(i.iterN(e,l,n))return!0;if(0==(t-=l))break;e=0}else e-=o}}};var bl=0,xl=e.Doc=function(e,t,n,r){if(!(this instanceof xl))return new xl(e,t,n,r);null==n&&(n=0),Vr.call(this,[new $r([new ml("",null)])]),this.first=n,this.scrollTop=this.scrollLeft=0,this.cantEdit=!1,this.cleanGeneration=1,this.frontier=n;var i=Wo(n,0);this.sel=pe(i),this.history=new ii(null),this.id=++bl,this.modeOption=t,this.lineSep=r,"string"==typeof e&&(e=this.splitLines(e)),jr(this,{from:i,to:i,text:e}),Te(this,pe(i),El)};xl.prototype=Ii(Vr.prototype,{constructor:xl,iter:function(e,t,n){n?this.iterN(e-this.first,t-e,n):this.iterN(this.first,this.first+this.size,e)},insert:function(e,t){for(var n=0,r=0;r<t.length;++r)n+=t[r].height;this.insertInner(e-this.first,t,n)},remove:function(e,t){this.removeInner(e-this.first,t)},getValue:function(e){var t=Qr(this,this.first,this.first+this.size);return e===!1?t:t.join(e||this.lineSeparator())},setValue:Ht(function(e){var t=Wo(this.first,0),n=this.first+this.size-1;Ln(this,{from:t,to:Wo(n,Yr(this,n).text.length),text:this.splitLines(e),origin:"setValue",full:!0},!0),Te(this,pe(t))}),replaceRange:function(e,t,n,r){t=me(this,t),n=n?me(this,n):t,Hn(this,e,t,n,r)},getRange:function(e,t,n){var r=Zr(this,me(this,e),me(this,t));return n===!1?r:r.join(n||this.lineSeparator())},getLine:function(e){var t=this.getLineHandle(e);return t&&t.text},getLineHandle:function(e){return ye(this,e)?Yr(this,e):void 0},getLineNumber:function(e){return ei(e)},getLineHandleVisualStart:function(e){return"number"==typeof e&&(e=Yr(this,e)),vr(e)},lineCount:function(){return this.size},firstLine:function(){return this.first},lastLine:function(){return this.first+this.size-1},clipPos:function(e){return me(this,e)},getCursor:function(e){var t,n=this.sel.primary();return t=null==e||"head"==e?n.head:"anchor"==e?n.anchor:"end"==e||"to"==e||e===!1?n.to():n.from()},listSelections:function(){return this.sel.ranges},somethingSelected:function(){return this.sel.somethingSelected()},setCursor:Ht(function(e,t,n){ke(this,me(this,"number"==typeof e?Wo(e,t||0):e),null,n)}),setSelection:Ht(function(e,t,n){ke(this,me(this,e),me(this,t||e),n)}),extendSelection:Ht(function(e,t,n){we(this,me(this,e),t&&me(this,t),n)}),extendSelections:Ht(function(e,t){Ce(this,be(this,e,t))}),extendSelectionsBy:Ht(function(e,t){Ce(this,Ei(this.sel.ranges,e),t)}),setSelections:Ht(function(e,t,n){if(e.length){for(var r=0,i=[];r<e.length;r++)i[r]=new de(me(this,e[r].anchor),me(this,e[r].head));null==t&&(t=Math.min(e.length-1,this.sel.primIndex)),Te(this,fe(i,t),n)}}),addSelection:Ht(function(e,t,n){var r=this.sel.ranges.slice(0);r.push(new de(me(this,e),me(this,t||e))),Te(this,fe(r,r.length-1),n)}),getSelection:function(e){for(var t,n=this.sel.ranges,r=0;r<n.length;r++){var i=Zr(this,n[r].from(),n[r].to());t=t?t.concat(i):i}return e===!1?t:t.join(e||this.lineSeparator())},getSelections:function(e){for(var t=[],n=this.sel.ranges,r=0;r<n.length;r++){var i=Zr(this,n[r].from(),n[r].to());e!==!1&&(i=i.join(e||this.lineSeparator())),t[r]=i}return t},replaceSelection:function(e,t,n){for(var r=[],i=0;i<this.sel.ranges.length;i++)r[i]=e;this.replaceSelections(r,t,n||"+input")},replaceSelections:Ht(function(e,t,n){for(var r=[],i=this.sel,o=0;o<i.ranges.length;o++){var l=i.ranges[o];r[o]={from:l.from(),to:l.to(),text:this.splitLines(e[o]),origin:n}}for(var a=t&&"end"!=t&&Sn(this,r,t),o=r.length-1;o>=0;o--)Ln(this,r[o]);a?Me(this,a):this.cm&&Pn(this.cm)}),undo:Ht(function(){Tn(this,"undo")}),redo:Ht(function(){Tn(this,"redo")}),undoSelection:Ht(function(){Tn(this,"undo",!0)}),redoSelection:Ht(function(){Tn(this,"redo",!0)}),setExtending:function(e){this.extend=e},getExtending:function(){return this.extend},historySize:function(){for(var e=this.history,t=0,n=0,r=0;r<e.done.length;r++)e.done[r].ranges||++t;for(var r=0;r<e.undone.length;r++)e.undone[r].ranges||++n;return{undo:t,redo:n}},clearHistory:function(){this.history=new ii(this.history.maxGeneration)},markClean:function(){this.cleanGeneration=this.changeGeneration(!0)},changeGeneration:function(e){return e&&(this.history.lastOp=this.history.lastSelOp=this.history.lastOrigin=null),this.history.generation},isClean:function(e){return this.history.generation==(e||this.cleanGeneration)},getHistory:function(){return{done:gi(this.history.done),undone:gi(this.history.undone)}},setHistory:function(e){var t=this.history=new ii(this.history.maxGeneration);t.done=gi(e.done.slice(0),null,!0),t.undone=gi(e.undone.slice(0),null,!0)},addLineClass:Ht(function(e,t,n){return _n(this,e,"gutter"==t?"gutter":"class",function(e){var r="text"==t?"textClass":"background"==t?"bgClass":"gutter"==t?"gutterClass":"wrapClass";if(e[r]){if(ji(n).test(e[r]))return!1;e[r]+=" "+n}else e[r]=n;return!0})}),removeLineClass:Ht(function(e,t,n){return _n(this,e,"gutter"==t?"gutter":"class",function(e){var r="text"==t?"textClass":"background"==t?"bgClass":"gutter"==t?"gutterClass":"wrapClass",i=e[r];if(!i)return!1;if(null==n)e[r]=null;else{var o=i.match(ji(n));if(!o)return!1;var l=o.index+o[0].length;e[r]=i.slice(0,o.index)+(o.index&&l!=i.length?" ":"")+i.slice(l)||null}return!0})}),addLineWidget:Ht(function(e,t,n){return Lr(this,e,t,n)}),removeLineWidget:function(e){e.clear()},markText:function(e,t,n){return Vn(this,me(this,e),me(this,t),n,"range")},setBookmark:function(e,t){var n={replacedWith:t&&(null==t.nodeType?t.widget:t),insertLeft:t&&t.insertLeft,clearWhenEmpty:!1,shared:t&&t.shared,handleMouseEvents:t&&t.handleMouseEvents};return e=me(this,e),Vn(this,e,e,n,"bookmark")},findMarksAt:function(e){e=me(this,e);var t=[],n=Yr(this,e.line).markedSpans;if(n)for(var r=0;r<n.length;++r){var i=n[r];(null==i.from||i.from<=e.ch)&&(null==i.to||i.to>=e.ch)&&t.push(i.marker.parent||i.marker)}return t},findMarks:function(e,t,n){e=me(this,e),t=me(this,t);var r=[],i=e.line;return this.iter(e.line,t.line+1,function(o){var l=o.markedSpans;if(l)for(var a=0;a<l.length;a++){var s=l[a];i==e.line&&e.ch>s.to||null==s.from&&i!=e.line||i==t.line&&s.from>t.ch||n&&!n(s.marker)||r.push(s.marker.parent||s.marker)}++i}),r},getAllMarks:function(){var e=[];return this.iter(function(t){var n=t.markedSpans;if(n)for(var r=0;r<n.length;++r)null!=n[r].from&&e.push(n[r].marker)}),e},posFromIndex:function(e){var t,n=this.first;return this.iter(function(r){var i=r.text.length+1;return i>e?(t=e,!0):(e-=i,void++n)}),me(this,Wo(n,t))},indexFromPos:function(e){e=me(this,e);var t=e.ch;return e.line<this.first||e.ch<0?0:(this.iter(this.first,e.line,function(e){t+=e.text.length+1}),t)},copy:function(e){var t=new xl(Qr(this,this.first,this.first+this.size),this.modeOption,this.first,this.lineSep);return t.scrollTop=this.scrollTop,t.scrollLeft=this.scrollLeft,t.sel=this.sel,t.extend=!1,e&&(t.history.undoDepth=this.history.undoDepth,t.setHistory(this.getHistory())),t},linkedDoc:function(e){e||(e={});var t=this.first,n=this.first+this.size;null!=e.from&&e.from>t&&(t=e.from),null!=e.to&&e.to<n&&(n=e.to);var r=new xl(Qr(this,t,n),e.mode||this.modeOption,t,this.lineSep);return e.sharedHist&&(r.history=this.history),(this.linked||(this.linked=[])).push({doc:r,sharedHist:e.sharedHist}),r.linked=[{doc:this,isParent:!0,sharedHist:e.sharedHist}],Yn(r,Xn(this)),r},unlinkDoc:function(t){if(t instanceof e&&(t=t.doc),this.linked)for(var n=0;n<this.linked.length;++n){var r=this.linked[n];if(r.doc==t){this.linked.splice(n,1),t.unlinkDoc(this),Zn(Xn(this));break}}if(t.history==this.history){var i=[t.id];Kr(t,function(e){i.push(e.id)},!0),t.history=new ii(null),t.history.done=gi(this.history.done,i),t.history.undone=gi(this.history.undone,i)}},iterLinkedDocs:function(e){Kr(this,e)},getMode:function(){return this.mode},getEditor:function(){return this.cm},splitLines:function(e){return this.lineSep?e.split(this.lineSep):Zl(e)},lineSeparator:function(){return this.lineSep||"\n"}}),xl.prototype.eachLine=xl.prototype.iter;var wl="iter insert remove copy getEditor constructor".split(" ");for(var Cl in 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o=0,l=this.compoundRules.length;l>o;o++)for(var a=this.compoundRules[o],s=0,u=a.length;u>s;s++)this.compoundRuleCodes[a[s]]=[];"ONLYINCOMPOUND"in this.flags&&(this.compoundRuleCodes[this.flags.ONLYINCOMPOUND]=[]),this.dictionaryTable=this._parseDIC(n);for(var o in this.compoundRuleCodes)0==this.compoundRuleCodes[o].length&&delete this.compoundRuleCodes[o];for(var o=0,l=this.compoundRules.length;l>o;o++){for(var c=this.compoundRules[o],h="",s=0,u=c.length;u>s;s++){var d=c[s];h+=d in this.compoundRuleCodes?"("+this.compoundRuleCodes[d].join("|")+")":d}this.compoundRules[o]=new RegExp(h,"i")}}return this};Typo.prototype={load:function(e){for(var t in e)this[t]=e[t];return this},_readFile:function(e,t){t||(t="ISO8859-1");var n=new XMLHttpRequest;return n.open("GET",e,!1),n.overrideMimeType&&n.overrideMimeType("text/plain; charset="+t),n.send(null),n.responseText},_parseAFF:function(e){var t={};e=this._removeAffixComments(e);for(var n=e.split("\n"),r=0,i=n.length;i>r;r++){var o=n[r],l=o.split(/\s+/),a=l[0];if("PFX"==a||"SFX"==a){for(var s=l[1],u=l[2],c=parseInt(l[3],10),h=[],d=r+1,f=r+1+c;f>d;d++){var o=n[d],p=o.split(/\s+/),g=p[2],m=p[3].split("/"),v=m[0];"0"===v&&(v="");var y=this.parseRuleCodes(m[1]),b=p[4],x={};x.add=v,y.length>0&&(x.continuationClasses=y),"."!==b&&("SFX"===a?x.match=new RegExp(b+"$"):x.match=new RegExp("^"+b)),"0"!=g&&("SFX"===a?x.remove=new RegExp(g+"$"):x.remove=g),h.push(x)}t[s]={type:a,combineable:"Y"==u,entries:h},r+=c}else if("COMPOUNDRULE"===a){for(var c=parseInt(l[1],10),d=r+1,f=r+1+c;f>d;d++){var o=n[d],p=o.split(/\s+/);this.compoundRules.push(p[1])}r+=c}else if("REP"===a){var p=o.split(/\s+/);3===p.length&&this.replacementTable.push([p[1],p[2]])}else this.flags[a]=l[1]}return t},_removeAffixComments:function(e){return e=e.replace(/#.*$/gm,""),e=e.replace(/^\s\s*/m,"").replace(/\s\s*$/m,""),e=e.replace(/\n{2,}/g,"\n"),e=e.replace(/^\s\s*/,"").replace(/\s\s*$/,"")},_parseDIC:function(e){function t(e,t){e in r&&"object"==typeof r[e]||(r[e]=[]),r[e].push(t)}e=this._removeDicComments(e);for(var n=e.split("\n"),r={},i=1,o=n.length;o>i;i++){var l=n[i],a=l.split("/",2),s=a[0];if(a.length>1){var u=this.parseRuleCodes(a[1]);"NEEDAFFIX"in this.flags&&-1!=u.indexOf(this.flags.NEEDAFFIX)||t(s,u);for(var c=0,h=u.length;h>c;c++){var d=u[c],f=this.rules[d];if(f)for(var p=this._applyRule(s,f),g=0,m=p.length;m>g;g++){var v=p[g];if(t(v,[]),f.combineable)for(var y=c+1;h>y;y++){var b=u[y],x=this.rules[b];if(x&&x.combineable&&f.type!=x.type)for(var w=this._applyRule(v,x),C=0,S=w.length;S>C;C++){var k=w[C];t(k,[])}}}d in this.compoundRuleCodes&&this.compoundRuleCodes[d].push(s)}}else t(s.trim(),[])}return r},_removeDicComments:function(e){return e=e.replace(/^\t.*$/gm,"")},parseRuleCodes:function(e){if(!e)return[];if(!("FLAG"in this.flags))return e.split("");if("long"===this.flags.FLAG){for(var t=[],n=0,r=e.length;r>n;n+=2)t.push(e.substr(n,2));return t}return"num"===this.flags.FLAG?textCode.split(","):void 0},_applyRule:function(e,t){for(var n=t.entries,r=[],i=0,o=n.length;o>i;i++){var l=n[i];if(!l.match||e.match(l.match)){var a=e;if(l.remove&&(a=a.replace(l.remove,"")),"SFX"===t.type?a+=l.add:a=l.add+a,r.push(a),"continuationClasses"in l)for(var s=0,u=l.continuationClasses.length;u>s;s++){var c=this.rules[l.continuationClasses[s]];c&&(r=r.concat(this._applyRule(a,c)))}}}return r},check:function(e){var t=e.replace(/^\s\s*/,"").replace(/\s\s*$/,"");if(this.checkExact(t))return!0;if(t.toUpperCase()===t){var n=t[0]+t.substring(1).toLowerCase();if(this.hasFlag(n,"KEEPCASE"))return!1;if(this.checkExact(n))return!0}var r=t.toLowerCase();if(r!==t){if(this.hasFlag(r,"KEEPCASE"))return!1;if(this.checkExact(r))return!0}return!1},checkExact:function(e){var t=this.dictionaryTable[e];if("undefined"==typeof t){if("COMPOUNDMIN"in this.flags&&e.length>=this.flags.COMPOUNDMIN)for(var n=0,r=this.compoundRules.length;r>n;n++)if(e.match(this.compoundRules[n]))return!0;return!1}for(var n=0,r=t.length;r>n;n++)if(!this.hasFlag(e,"ONLYINCOMPOUND",t[n]))return!0;return!1},hasFlag:function(e,t,n){if(t in this.flags){if("undefined"==typeof n)var n=Array.prototype.concat.apply([],this.dictionaryTable[e]);if(n&&-1!==n.indexOf(this.flags[t]))return!0}return!1},alphabet:"",suggest:function(e,t){function n(e){for(var t=[],n=0,r=e.length;r>n;n++){for(var i=e[n],o=[],l=0,a=i.length+1;a>l;l++)o.push([i.substring(0,l),i.substring(l,i.length)]);for(var s=[],l=0,a=o.length;a>l;l++){var c=o[l];c[1]&&s.push(c[0]+c[1].substring(1))}for(var h=[],l=0,a=o.length;a>l;l++){var c=o[l];c[1].length>1&&h.push(c[0]+c[1][1]+c[1][0]+c[1].substring(2))}for(var d=[],l=0,a=o.length;a>l;l++){var c=o[l];if(c[1])for(var f=0,p=u.alphabet.length;p>f;f++)d.push(c[0]+u.alphabet[f]+c[1].substring(1))}for(var g=[],l=0,a=o.length;a>l;l++){var c=o[l];if(c[1])for(var f=0,p=u.alphabet.length;p>f;f++)d.push(c[0]+u.alphabet[f]+c[1])}t=t.concat(s),t=t.concat(h),t=t.concat(d),t=t.concat(g)}return t}function r(e){for(var t=[],n=0;n<e.length;n++)u.check(e[n])&&t.push(e[n]);return t}function i(e){function i(e,t){return e[1]<t[1]?-1:1}for(var o=n([e]),l=n(o),a=r(o).concat(r(l)),s={},c=0,h=a.length;h>c;c++)a[c]in s?s[a[c]]+=1:s[a[c]]=1;var d=[];for(var c in s)d.push([c,s[c]]);d.sort(i).reverse();for(var f=[],c=0,h=Math.min(t,d.length);h>c;c++)u.hasFlag(d[c][0],"NOSUGGEST")||f.push(d[c][0]);return f}if(t||(t=5),this.check(e))return[];for(var o=0,l=this.replacementTable.length;l>o;o++){var a=this.replacementTable[o];if(-1!==e.indexOf(a[0])){var s=e.replace(a[0],a[1]);if(this.check(s))return[s]}}var u=this;return u.alphabet="abcdefghijklmnopqrstuvwxyz",i(e)}};var num_loaded=0,aff_loading=!1,dic_loading=!1,aff_data="",dic_data="",typo;CodeMirror.defineMode("spell-checker",function(e,t){if(!aff_loading){aff_loading=!0;var n=new 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if(o=this.rules.html.exec(e))e=e.substring(o[0].length),this.tokens.push({type:this.options.sanitize?"paragraph":"html",pre:!this.options.sanitizer&&("pre"===o[1]||"script"===o[1]||"style"===o[1]),text:o[0]});else if(!n&&t&&(o=this.rules.def.exec(e)))e=e.substring(o[0].length),this.tokens.links[o[1].toLowerCase()]={href:o[2],title:o[3]};else if(t&&(o=this.rules.table.exec(e))){for(e=e.substring(o[0].length),s={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/(?: *\| *)?\n$/,"").split("\n")},h=0;h<s.align.length;h++)/^ *-+: *$/.test(s.align[h])?s.align[h]="right":/^ *:-+: *$/.test(s.align[h])?s.align[h]="center":/^ *:-+ *$/.test(s.align[h])?s.align[h]="left":s.align[h]=null;for(h=0;h<s.cells.length;h++)s.cells[h]=s.cells[h].replace(/^ *\| *| *\| *$/g,"").split(/ *\| */);this.tokens.push(s)}else if(t&&(o=this.rules.paragraph.exec(e)))e=e.substring(o[0].length),this.tokens.push({type:"paragraph",text:"\n"===o[1].charAt(o[1].length-1)?o[1].slice(0,-1):o[1]});else if(o=this.rules.text.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"text",text:o[0]});else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0));return this.tokens};var h={escape:/^\\([\\`*{}\[\]()#+\-.!_>])/,autolink:/^<([^ >]+(@|:\/)[^ >]+)>/,url:a,tag:/^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,link:/^!?\[(inside)\]\(href\)/,reflink:/^!?\[(inside)\]\s*\[([^\]]*)\]/,nolink:/^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,strong:/^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,em:/^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,code:/^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,br:/^ {2,}\n(?!\s*$)/,del:a,text:/^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/};h._inside=/(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/,h._href=/\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/,h.link=l(h.link)("inside",h._inside)("href",h._href)(),h.reflink=l(h.reflink)("inside",h._inside)(),h.normal=s({},h),h.pedantic=s({},h.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/}),h.gfm=s({},h.normal,{escape:l(h.escape)("])","~|])")(),url:/^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,del:/^~~(?=\S)([\s\S]*?\S)~~/,text:l(h.text)("]|","~]|")("|","|https?://|")()}),h.breaks=s({},h.gfm,{br:l(h.br)("{2,}","*")(),text:l(h.gfm.text)("{2,}","*")()}),t.rules=h,t.output=function(e,n,r){var i=new t(n,r);return i.output(e)},t.prototype.output=function(e){for(var t,n,r,o,l="";e;)if(o=this.rules.escape.exec(e))e=e.substring(o[0].length),l+=o[1];else 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if(o=this.rules.strong.exec(e))e=e.substring(o[0].length),l+=this.renderer.strong(this.output(o[2]||o[1]));else if(o=this.rules.em.exec(e))e=e.substring(o[0].length),l+=this.renderer.em(this.output(o[2]||o[1]));else if(o=this.rules.code.exec(e))e=e.substring(o[0].length),l+=this.renderer.codespan(i(o[2],!0));else if(o=this.rules.br.exec(e))e=e.substring(o[0].length),l+=this.renderer.br();else if(o=this.rules.del.exec(e))e=e.substring(o[0].length),l+=this.renderer.del(this.output(o[1]));else if(o=this.rules.text.exec(e))e=e.substring(o[0].length),l+=this.renderer.text(i(this.smartypants(o[0])));else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0))}else e=e.substring(o[0].length),n=i(o[1]),r=n,l+=this.renderer.link(r,null,n);return l},t.prototype.outputLink=function(e,t){var n=i(t.href),r=t.title?i(t.title):null;return"!"!==e[0].charAt(0)?this.renderer.link(n,r,this.output(e[1])):this.renderer.image(n,r,i(e[1]))},t.prototype.smartypants=function(e){return this.options.smartypants?e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…"):e},t.prototype.mangle=function(e){if(!this.options.mangle)return e;for(var t,n="",r=e.length,i=0;r>i;i++)t=e.charCodeAt(i),Math.random()>.5&&(t="x"+t.toString(16)),n+="&#"+t+";";return n},n.prototype.code=function(e,t,n){if(this.options.highlight){var r=this.options.highlight(e,t);null!=r&&r!==e&&(n=!0,e=r)}return t?'<pre><code class="'+this.options.langPrefix+i(t,!0)+'">'+(n?e:i(e,!0))+"\n</code></pre>\n":"<pre><code>"+(n?e:i(e,!0))+"\n</code></pre>"},n.prototype.blockquote=function(e){return"<blockquote>\n"+e+"</blockquote>\n"},n.prototype.html=function(e){return e},n.prototype.heading=function(e,t,n){return"<h"+t+' id="'+this.options.headerPrefix+n.toLowerCase().replace(/[^\w]+/g,"-")+'">'+e+"</h"+t+">\n"},n.prototype.hr=function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"},n.prototype.list=function(e,t){var n=t?"ol":"ul";return"<"+n+">\n"+e+"</"+n+">\n"},n.prototype.listitem=function(e){return"<li>"+e+"</li>\n"},n.prototype.paragraph=function(e){return"<p>"+e+"</p>\n"},n.prototype.table=function(e,t){return"<table>\n<thead>\n"+e+"</thead>\n<tbody>\n"+t+"</tbody>\n</table>\n"},n.prototype.tablerow=function(e){return"<tr>\n"+e+"</tr>\n"},n.prototype.tablecell=function(e,t){var n=t.header?"th":"td",r=t.align?"<"+n+' style="text-align:'+t.align+'">':"<"+n+">";return r+e+"</"+n+">\n"},n.prototype.strong=function(e){return"<strong>"+e+"</strong>"},n.prototype.em=function(e){return"<em>"+e+"</em>"},n.prototype.codespan=function(e){return"<code>"+e+"</code>"},n.prototype.br=function(){return this.options.xhtml?"<br/>":"<br>"},n.prototype.del=function(e){return"<del>"+e+"</del>"},n.prototype.link=function(e,t,n){if(this.options.sanitize){try{var r=decodeURIComponent(o(e)).replace(/[^\w:]/g,"").toLowerCase()}catch(i){return""}if(0===r.indexOf("javascript:")||0===r.indexOf("vbscript:"))return""}var l='<a href="'+e+'"';return t&&(l+=' title="'+t+'"'),l+=">"+n+"</a>"},n.prototype.image=function(e,t,n){var r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">"},n.prototype.text=function(e){return e},r.parse=function(e,t,n){var i=new r(t,n);return i.parse(e)},r.prototype.parse=function(e){this.inline=new t(e.links,this.options,this.renderer),this.tokens=e.reverse();for(var n="";this.next();)n+=this.tok();return n},r.prototype.next=function(){return this.token=this.tokens.pop()},r.prototype.peek=function(){return this.tokens[this.tokens.length-1]||0},r.prototype.parseText=function(){for(var e=this.token.text;"text"===this.peek().type;)e+="\n"+this.next().text;return this.inline.output(e)},r.prototype.tok=function(){switch(this.token.type){case"space":return"";case"hr":return this.renderer.hr();case"heading":return this.renderer.heading(this.inline.output(this.token.text),this.token.depth,this.token.text);case"code":return this.renderer.code(this.token.text,this.token.lang,this.token.escaped);case"table":var e,t,n,r,i,o="",l="";for(n="",e=0;e<this.token.header.length;e++)r={header:!0,align:this.token.align[e]},n+=this.renderer.tablecell(this.inline.output(this.token.header[e]),{header:!0,align:this.token.align[e]});for(o+=this.renderer.tablerow(n),e=0;e<this.token.cells.length;e++){for(t=this.token.cells[e],n="",i=0;i<t.length;i++)n+=this.renderer.tablecell(this.inline.output(t[i]),{header:!1,align:this.token.align[i]});l+=this.renderer.tablerow(n)}return this.renderer.table(o,l);case"blockquote_start":for(var l="";"blockquote_end"!==this.next().type;)l+=this.tok();return this.renderer.blockquote(l);case"list_start":for(var l="",a=this.token.ordered;"list_end"!==this.next().type;)l+=this.tok();return this.renderer.list(l,a);case"list_item_start":for(var l="";"list_item_end"!==this.next().type;)l+="text"===this.token.type?this.parseText():this.tok();return this.renderer.listitem(l);case"loose_item_start":for(var l="";"list_item_end"!==this.next().type;)l+=this.tok();return this.renderer.listitem(l);case"html":var s=this.token.pre||this.options.pedantic?this.token.text:this.inline.output(this.token.text);return this.renderer.html(s);case"paragraph":return this.renderer.paragraph(this.inline.output(this.token.text));case"text":return this.renderer.paragraph(this.parseText())}},a.exec=a,u.options=u.setOptions=function(e){return s(u.defaults,e),u},u.defaults={gfm:!0,tables:!0,breaks:!1,pedantic:!1,sanitize:!1,sanitizer:null,mangle:!0,smartLists:!1,silent:!1,highlight:null,langPrefix:"lang-",smartypants:!1,headerPrefix:"",renderer:new n,xhtml:!1},u.Parser=r,u.parser=r.parse,u.Renderer=n,u.Lexer=e,u.lexer=e.lex,u.InlineLexer=t,u.inlineLexer=t.output,u.parse=u,"undefined"!=typeof module&&"object"==typeof exports?module.exports=u:"function"==typeof define&&define.amd?define(function(){return u}):this.marked=u}.call(function(){return this||("undefined"!=typeof window?window:global)}());var isMac=/Mac/.test(navigator.platform),shortcuts={"Cmd-B":toggleBold,"Cmd-I":toggleItalic,"Cmd-K":drawLink,"Cmd-H":toggleHeadingSmaller,"Shift-Cmd-H":toggleHeadingBigger,"Cmd-Alt-I":drawImage,"Cmd-'":toggleBlockquote,"Cmd-Alt-L":toggleOrderedList,"Cmd-L":toggleUnorderedList,"Cmd-Alt-C":toggleCodeBlock,"Cmd-P":togglePreview},saved_overflow="",toolbarBuiltInButtons={bold:{name:"bold",action:toggleBold,className:"fa fa-bold",title:"Bold (Ctrl+B)"},italic:{name:"italic",action:toggleItalic,className:"fa fa-italic",title:"Italic (Ctrl+I)"},strikethrough:{name:"strikethrough",action:toggleStrikethrough,className:"fa fa-strikethrough",title:"Strikethrough"},heading:{name:"heading",action:toggleHeadingSmaller,className:"fa fa-header",title:"Heading (Ctrl+H)"},"heading-smaller":{name:"heading-smaller",action:toggleHeadingSmaller,className:"fa fa-header fa-header-x fa-header-smaller",title:"Smaller Heading (Ctrl+H)"},"heading-bigger":{name:"heading-bigger",action:toggleHeadingBigger,className:"fa fa-header fa-header-x fa-header-bigger",title:"Bigger Heading (Shift+Ctrl+H)"},"heading-1":{name:"heading-1",action:toggleHeading1,className:"fa fa-header fa-header-x fa-header-1",title:"Big Heading"},"heading-2":{name:"heading-2",action:toggleHeading2,className:"fa fa-header fa-header-x fa-header-2",title:"Medium Heading"},"heading-3":{name:"heading-3",action:toggleHeading3,className:"fa fa-header fa-header-x fa-header-3",title:"Small Heading"},code:{name:"code",action:toggleCodeBlock,className:"fa fa-code",title:"Code (Ctrl+Alt+C)"},quote:{name:"quote",action:toggleBlockquote,className:"fa fa-quote-left",title:"Quote (Ctrl+')"},"unordered-list":{name:"unordered-list",action:toggleUnorderedList,className:"fa fa-list-ul",title:"Generic List (Ctrl+L)"},"ordered-list":{name:"ordered-list",action:toggleOrderedList,className:"fa fa-list-ol",title:"Numbered List (Ctrl+Alt+L)"},link:{name:"link",action:drawLink,className:"fa fa-link",title:"Create Link (Ctrl+K)"},image:{name:"image",action:drawImage,className:"fa fa-picture-o",title:"Insert Image (Ctrl+Alt+I)"},"horizontal-rule":{name:"horizontal-rule",action:drawHorizontalRule,className:"fa fa-minus",title:"Insert Horizontal Line"},preview:{name:"preview",action:togglePreview,className:"fa fa-eye no-disable",title:"Toggle Preview (Ctrl+P)"},"side-by-side":{name:"side-by-side",action:toggleSideBySide,className:"fa fa-columns no-disable no-mobile",title:"Toggle Side by Side (F9)"},fullscreen:{name:"fullscreen",action:toggleFullScreen,className:"fa fa-arrows-alt no-disable no-mobile",title:"Toggle Fullscreen (F11)"},guide:{name:"guide",action:"http://nextstepwebs.github.io/simplemde-markdown-editor/markdown-guide",className:"fa fa-question-circle",title:"Markdown Guide"}},toolbar=["bold","italic","heading","|","quote","unordered-list","ordered-list","|","link","image","|","preview","side-by-side","fullscreen","guide"];SimpleMDE.toolbar=toolbar,SimpleMDE.prototype.markdown=function(e){if(window.marked){var t={};return this.options&&this.options.renderingConfig&&this.options.renderingConfig.singleLineBreaks!==!1&&(t.breaks=!0),this.options&&this.options.renderingConfig&&this.options.renderingConfig.codeSyntaxHighlighting===!0&&window.hljs&&(t.highlight=function(e){return hljs.highlightAuto(e).value}),marked.setOptions(t),marked(e)}},SimpleMDE.prototype.render=function(e){if(e||(e=this.element||document.getElementsByTagName("textarea")[0]),!this._rendered||this._rendered!==e){this.element=e;var t=this.options,n=this,r={};for(var i in shortcuts)!function(e){r[fixShortcut(e)]=function(t){shortcuts[e](n)}}(i);r.Enter="newlineAndIndentContinueMarkdownList",r.Tab="tabAndIndentMarkdownList",r["Shift-Tab"]="shiftTabAndUnindentMarkdownList",r.F11=function(e){toggleFullScreen(n)},r.F9=function(e){toggleSideBySide(n)},r.Esc=function(e){e.getOption("fullScreen")&&toggleFullScreen(n)};var o,l;t.spellChecker!==!1?(o="spell-checker",l=t.parsingConfig,l.name="gfm",l.gitHubSpice=!1):(o=t.parsingConfig,o.name="gfm",o.gitHubSpice=!1),this.codemirror=CodeMirror.fromTextArea(e,{mode:o,backdrop:l,theme:"paper",tabSize:void 0!=t.tabSize?t.tabSize:2,indentUnit:void 0!=t.tabSize?t.tabSize:2,indentWithTabs:t.indentWithTabs===!1?!1:!0,lineNumbers:!1,autofocus:t.autofocus===!0?!0:!1,extraKeys:r,lineWrapping:t.lineWrapping===!1?!1:!0,allowDropFileTypes:["text/plain"]}),t.toolbar!==!1&&this.createToolbar(),t.status!==!1&&this.createStatusbar(),void 0!=t.autosave&&t.autosave.enabled===!0&&this.autosave(),this.createSideBySide(),this._rendered=this.element}},SimpleMDE.prototype.autosave=function(){var e=this.value(),t=this;if(void 0==this.options.autosave.unique_id||""==this.options.autosave.unique_id)return void console.log("SimpleMDE: You must set a unique_id to use the autosave feature");null!=t.element.form&&void 0!=t.element.form&&t.element.form.addEventListener("submit",function(){localStorage.setItem(t.options.autosave.unique_id,"")}),this.options.autosave.loaded!==!0&&(null!=localStorage.getItem(this.options.autosave.unique_id)&&this.codemirror.setValue(localStorage.getItem(this.options.autosave.unique_id)),this.options.autosave.loaded=!0),localStorage&&localStorage.setItem(this.options.autosave.unique_id,e);var n=document.getElementById("autosaved");if(null!=n&&void 0!=n&&""!=n){var r=new Date,i=r.getHours(),o=r.getMinutes(),l="am",a=i;a>=12&&(a=i-12,l="pm"),0==a&&(a=12),o=10>o?"0"+o:o,n.innerHTML="Autosaved: "+a+":"+o+" "+l}setTimeout(function(){t.autosave()},this.options.autosave.delay||1e4)},SimpleMDE.prototype.createSideBySide=function(){var e=this.codemirror,t=e.getWrapperElement(),n=t.nextSibling;n&&/editor-preview-side/.test(n.className)||(n=document.createElement("div"),n.className="editor-preview-side",t.parentNode.insertBefore(n,t.nextSibling));var r=!1,i=!1;return e.on("scroll",function(e){return r?void(r=!1):(i=!0,height=e.getScrollInfo().height-e.getScrollInfo().clientHeight,ratio=parseFloat(e.getScrollInfo().top)/height,move=(n.scrollHeight-n.clientHeight)*ratio,void(n.scrollTop=move))}),n.onscroll=function(t){return i?void(i=!1):(r=!0,height=n.scrollHeight-n.clientHeight,ratio=parseFloat(n.scrollTop)/height,move=(e.getScrollInfo().height-e.getScrollInfo().clientHeight)*ratio,void e.scrollTo(0,move))},!0},SimpleMDE.prototype.createToolbar=function(e){if(e=e||this.options.toolbar,e&&0!==e.length){for(var t=0;t<e.length;t++)void 0!=toolbarBuiltInButtons[e[t]]&&(e[t]=toolbarBuiltInButtons[e[t]]);var n=document.createElement("div");n.className="editor-toolbar";var r=this,i={};r.toolbar=e;for(var t=0;t<e.length;t++)("guide"!=e[t].name||r.options.toolbarGuideIcon!==!1)&&(r.options.hideIcons&&-1!=r.options.hideIcons.indexOf(e[t].name)||!function(e){var t;t="|"===e?createSep():createIcon(e,r.options.toolbarTips),e.action&&("function"==typeof e.action?t.onclick=function(t){e.action(r)}:"string"==typeof e.action&&(t.href=e.action,t.target="_blank")),i[e.name||e]=t,n.appendChild(t)}(e[t]));r.toolbarElements=i;var o=this.codemirror;o.on("cursorActivity",function(){var e=getState(o);for(var t in i)!function(t){var n=i[t];e[t]?n.className+=" active":"fullscreen"!=t&&"side-by-side"!=t&&(n.className=n.className.replace(/\s*active\s*/g,""))}(t)});var l=o.getWrapperElement();return l.parentNode.insertBefore(n,l),n}},SimpleMDE.prototype.createStatusbar=function(e){if(e=e||this.options.status,options=this.options,e&&0!==e.length){var t=document.createElement("div");t.className="editor-statusbar";for(var n,r=this.codemirror,i=0;i<e.length;i++)!function(e){var i=document.createElement("span");i.className=e,"words"===e?(i.innerHTML="0",r.on("update",function(){i.innerHTML=wordCount(r.getValue())})):"lines"===e?(i.innerHTML="0",r.on("update",function(){i.innerHTML=r.lineCount()})):"cursor"===e?(i.innerHTML="0:0",r.on("cursorActivity",function(){n=r.getCursor(),i.innerHTML=n.line+":"+n.ch})):"autosave"===e&&void 0!=options.autosave&&options.autosave.enabled===!0&&i.setAttribute("id","autosaved"),t.appendChild(i)}(e[i]);var o=this.codemirror.getWrapperElement();return o.parentNode.insertBefore(t,o.nextSibling),t}},SimpleMDE.prototype.value=function(e){return void 0===e?this.codemirror.getValue():(this.codemirror.getDoc().setValue(e),this)},SimpleMDE.toggleBold=toggleBold,SimpleMDE.toggleItalic=toggleItalic,SimpleMDE.toggleStrikethrough=toggleStrikethrough,SimpleMDE.toggleBlockquote=toggleBlockquote,SimpleMDE.toggleHeadingSmaller=toggleHeadingSmaller,SimpleMDE.toggleHeadingBigger=toggleHeadingBigger,SimpleMDE.toggleHeading1=toggleHeading1,SimpleMDE.toggleHeading2=toggleHeading2,SimpleMDE.toggleHeading3=toggleHeading3,SimpleMDE.toggleCodeBlock=toggleCodeBlock,SimpleMDE.toggleUnorderedList=toggleUnorderedList,SimpleMDE.toggleOrderedList=toggleOrderedList,SimpleMDE.drawLink=drawLink,SimpleMDE.drawImage=drawImage,SimpleMDE.drawHorizontalRule=drawHorizontalRule,SimpleMDE.undo=undo,SimpleMDE.redo=redo,SimpleMDE.togglePreview=togglePreview,SimpleMDE.toggleSideBySide=toggleSideBySide,SimpleMDE.toggleFullScreen=toggleFullScreen,SimpleMDE.prototype.toggleBold=function(){toggleBold(this)},SimpleMDE.prototype.toggleItalic=function(){toggleItalic(this)},SimpleMDE.prototype.toggleStrikethrough=function(){toggleStrikethrough(this)},SimpleMDE.prototype.toggleBlockquote=function(){toggleBlockquote(this)},SimpleMDE.prototype.toggleHeadingSmaller=function(){toggleHeadingSmaller(this)},SimpleMDE.prototype.toggleHeadingBigger=function(){toggleHeadingBigger(this)},SimpleMDE.prototype.toggleHeading1=function(){toggleHeading1(this)},SimpleMDE.prototype.toggleHeading2=function(){toggleHeading2(this)},SimpleMDE.prototype.toggleHeading3=function(){toggleHeading3(this)},SimpleMDE.prototype.toggleCodeBlock=function(){toggleCodeBlock(this)},SimpleMDE.prototype.toggleUnorderedList=function(){toggleUnorderedList(this)},SimpleMDE.prototype.toggleOrderedList=function(){toggleOrderedList(this)},SimpleMDE.prototype.drawLink=function(){drawLink(this)},SimpleMDE.prototype.drawImage=function(){drawImage(this)},SimpleMDE.prototype.drawHorizontalRule=function(){drawHorizontalRule(this)},SimpleMDE.prototype.undo=function(){undo(this)},SimpleMDE.prototype.redo=function(){redo(this)},SimpleMDE.prototype.togglePreview=function(){togglePreview(this)},SimpleMDE.prototype.toggleSideBySide=function(){toggleSideBySide(this)},SimpleMDE.prototype.toggleFullScreen=function(){toggleFullScreen(this)};
\ No newline at end of file
diff --git a/gulpfile.js b/gulpfile.js
index d8d5806..e251cde 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1,11 +1,16 @@
+"use strict";
 var gulp = require("gulp"),
 	minifycss = require("gulp-minify-css"),
 	uglify = require("gulp-uglify"),
 	concat = require("gulp-concat"),
 	header = require("gulp-header"),
 	pkg = require("./package.json"),
-	prettify = require("gulp-jsbeautifier"),
-	download = require("gulp-download");
+	debug = require("gulp-debug"),
+	eslint = require("gulp-eslint"),
+	prettify = require("gulp-jsbeautifier");
+var browserify = require("browserify");
+var source = require("vinyl-source-stream");
+
 
 var banner = ["/**",
 	" * <%= pkg.name %> v<%= pkg.version %>",
@@ -15,85 +20,51 @@ var banner = ["/**",
 	" */",
 	""].join("\n");
 
-gulp.task("downloads-codemirror", function(callback) {
-	var download_urls = [
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/lib/codemirror.js",
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/addon/edit/continuelist.js",
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/addon/display/fullscreen.js",
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/addon/mode/overlay.js",
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/mode/gfm/gfm.js",
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/mode/markdown/markdown.js",
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/mode/xml/xml.js"];
-	
-	download(download_urls)
-		.pipe(gulp.dest("src/js/codemirror/"));
-	
-	// Wait to make sure they've been downloaded
-	setTimeout(function() {
-		callback();
-	}, 5000);
+gulp.task("lint", function() {
+	gulp.src("./src/js/**/*.js")
+		.pipe(debug())
+		.pipe(eslint())
+		.pipe(eslint.format());
 });
 
-gulp.task("downloads-js", function(callback) {
-	var download_urls = [
-		"https://raw.githubusercontent.com/chjj/marked/master/lib/marked.js",
-		"https://raw.githubusercontent.com/NextStepWebs/codemirror-spell-checker/master/src/js/spell-checker.js",
-		"https://raw.githubusercontent.com/NextStepWebs/codemirror-spell-checker/master/src/js/typo.js"];
-	
-	download(download_urls)
-		.pipe(gulp.dest("src/js/"));
-	
-	// Wait to make sure they've been downloaded
-	setTimeout(function() {
-		callback();
-	}, 5000);
-});
+function taskBrowserify(opts) {
+	return browserify("./src/js/simplemde.js", opts)
+		.bundle();
+
+}
 
-gulp.task("downloads-css", function(callback) {
-	var download_urls = [
-		"https://raw.githubusercontent.com/codemirror/CodeMirror/master/lib/codemirror.css",
-		"https://raw.githubusercontent.com/NextStepWebs/codemirror-spell-checker/master/src/css/spell-checker.css"];
-	
-	download(download_urls)
-		.pipe(gulp.dest("src/css/"));
-	
-	// Wait to make sure they've been downloaded
-	setTimeout(function() {
-		callback();
-	}, 5000);
+gulp.task("browserify:dev", [], function() {
+	return taskBrowserify({debug:true, standalone:"SimpleMDE"})
+	.pipe(source("simplemde.debug.js"))
+		.pipe(gulp.dest("./dist/"));
 });
 
-gulp.task("scripts", ["downloads-codemirror", "downloads-js", "downloads-css"], function() {
-	var js_files = [
-		"./src/js/codemirror/codemirror.js",
-		"./src/js/codemirror/continuelist.js",
-		"./src/js/codemirror/tablist.js",
-		"./src/js/codemirror/fullscreen.js",
-		"./src/js/codemirror/markdown.js",
-		"./src/js/codemirror/overlay.js",
-		"./src/js/codemirror/gfm.js",
-		"./src/js/codemirror/xml.js",
-		"./src/js/typo.js",
-		"./src/js/spell-checker.js",
-		"./src/js/marked.js",
-		"./src/js/simplemde.js"];
+gulp.task("browserify:prod", [], function() {
+	return taskBrowserify({standalone:"SimpleMDE"})
+		.pipe(source("simplemde.js"))
+		.pipe(gulp.dest("./dist/"));
+});
 
+gulp.task("scripts", ["browserify:dev", "browserify:prod", "lint"], function() {
+	var js_files = ["./dist/simplemde.js"];
 	return gulp.src(js_files)
-		.pipe(header(banner, {pkg: pkg}))
 		.pipe(concat("simplemde.min.js"))
-		.pipe(gulp.dest("dist"))
 		.pipe(uglify())
 		.pipe(header(banner, {pkg: pkg}))
-		.pipe(gulp.dest("dist"));
+		.pipe(gulp.dest("./dist/"));
 });
 
-gulp.task("styles", ["downloads-codemirror", "downloads-js", "downloads-css"], function() {
-	return gulp.src("./src/css/*.css")
+gulp.task("styles", function() {
+	var css_files = [
+		"./src/css/*.css",
+		"./node_modules/codemirror/lib/codemirror.css",
+		"./node_modules/codemirror-spell-checker/src/css/spell-checker.css"
+	];
+	return gulp.src(css_files)
 		.pipe(concat("simplemde.min.css"))
-		.pipe(gulp.dest("dist"))
 		.pipe(minifycss())
 		.pipe(header(banner, {pkg: pkg}))
-		.pipe(gulp.dest("dist"));
+		.pipe(gulp.dest("./dist/"));
 });
  
 gulp.task("prettify-js", function() {
@@ -108,4 +79,4 @@ gulp.task("prettify-css", function() {
 		.pipe(gulp.dest("./src/css"));
 });
 
-gulp.task("default", ["downloads-codemirror", "downloads-js", "downloads-css", "scripts", "styles", "prettify-js", "prettify-css"]);
\ No newline at end of file
+gulp.task("default", ["scripts", "styles"]);
\ No newline at end of file
diff --git a/package.json b/package.json
index db5440a..3aa8df1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "simplemde",
-  "version": "1.7.5",
+  "version": "1.7.6",
   "description": "A simple, beautiful, and embeddable JavaScript markdown editor. Features autosaving and spell checking.",
   "keywords": [
     "embeddable",
@@ -10,7 +10,7 @@
     "wysiwyg"
   ],
   "homepage": "https://github.com/NextStepWebs/simplemde-markdown-editor",
-  "main": "gulpfile.js",
+  "main": "./src/js/simplemde.js",
   "license": "MIT",
   "company": "Next Step Webs, Inc.",
   "author": {
@@ -20,14 +20,24 @@
   "bugs": {
     "url": "https://github.com/NextStepWebs/simplemde-markdown-editor/issues"
   },
+  "dependencies": {
+    "codemirror": "^5.7.0",
+    "codemirror-spell-checker": "NextStepWebs/codemirror-spell-checker",
+    "marked": "chjj/marked"
+  },
   "devDependencies": {
+    "browserify": "^11.2.0",
+    "debug": "^2.2.0",
+    "eslint": "^1.6.0",
     "gulp": "*",
-    "gulp-minify-css": "*",
-    "gulp-uglify": "*",
     "gulp-concat": "*",
+    "gulp-debug": "^2.1.1",
+    "gulp-eslint": "^1.0.0",
     "gulp-header": "*",
     "gulp-jsbeautifier": "*",
-    "gulp-download": "*"
+    "gulp-minify-css": "*",
+    "gulp-uglify": "*",
+    "vinyl-source-stream": "^1.1.0"
   },
   "repository": {
     "type": "git",
diff --git a/src/css/codemirror.css b/src/css/codemirror.css
deleted file mode 100644
index 3543523..0000000
--- a/src/css/codemirror.css
+++ /dev/null
@@ -1,334 +0,0 @@
-/* BASICS */
-
-.CodeMirror {
-  /* Set height, width, borders, and global font properties here */
-  font-family: monospace;
-  height: 300px;
-  color: black;
-}
-
-/* PADDING */
-
-.CodeMirror-lines {
-  padding: 4px 0; /* Vertical padding around content */
-}
-.CodeMirror pre {
-  padding: 0 4px; /* Horizontal padding of content */
-}
-
-.CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
-  background-color: white; /* The little square between H and V scrollbars */
-}
-
-/* GUTTER */
-
-.CodeMirror-gutters {
-  border-right: 1px solid #ddd;
-  background-color: #f7f7f7;
-  white-space: nowrap;
-}
-.CodeMirror-linenumbers {}
-.CodeMirror-linenumber {
-  padding: 0 3px 0 5px;
-  min-width: 20px;
-  text-align: right;
-  color: #999;
-  white-space: nowrap;
-}
-
-.CodeMirror-guttermarker { color: black; }
-.CodeMirror-guttermarker-subtle { color: #999; }
-
-/* CURSOR */
-
-.CodeMirror-cursor {
-  border-left: 1px solid black;
-  border-right: none;
-  width: 0;
-}
-/* Shown when moving in bi-directional text */
-.CodeMirror div.CodeMirror-secondarycursor {
-  border-left: 1px solid silver;
-}
-.cm-fat-cursor .CodeMirror-cursor {
-  width: auto;
-  border: 0;
-  background: #7e7;
-}
-.cm-fat-cursor div.CodeMirror-cursors {
-  z-index: 1;
-}
-
-.cm-animate-fat-cursor {
-  width: auto;
-  border: 0;
-  -webkit-animation: blink 1.06s steps(1) infinite;
-  -moz-animation: blink 1.06s steps(1) infinite;
-  animation: blink 1.06s steps(1) infinite;
-  background-color: #7e7;
-}
-@-moz-keyframes blink {
-  0% {}
-  50% { background-color: transparent; }
-  100% {}
-}
-@-webkit-keyframes blink {
-  0% {}
-  50% { background-color: transparent; }
-  100% {}
-}
-@keyframes blink {
-  0% {}
-  50% { background-color: transparent; }
-  100% {}
-}
-
-/* Can style cursor different in overwrite (non-insert) mode */
-.CodeMirror-overwrite .CodeMirror-cursor {}
-
-.cm-tab { display: inline-block; text-decoration: inherit; }
-
-.CodeMirror-ruler {
-  border-left: 1px solid #ccc;
-  position: absolute;
-}
-
-/* DEFAULT THEME */
-
-.cm-s-default .cm-header {color: blue;}
-.cm-s-default .cm-quote {color: #090;}
-.cm-negative {color: #d44;}
-.cm-positive {color: #292;}
-.cm-header, .cm-strong {font-weight: bold;}
-.cm-em {font-style: italic;}
-.cm-link {text-decoration: underline;}
-.cm-strikethrough {text-decoration: line-through;}
-
-.cm-s-default .cm-keyword {color: #708;}
-.cm-s-default .cm-atom {color: #219;}
-.cm-s-default .cm-number {color: #164;}
-.cm-s-default .cm-def {color: #00f;}
-.cm-s-default .cm-variable,
-.cm-s-default .cm-punctuation,
-.cm-s-default .cm-property,
-.cm-s-default .cm-operator {}
-.cm-s-default .cm-variable-2 {color: #05a;}
-.cm-s-default .cm-variable-3 {color: #085;}
-.cm-s-default .cm-comment {color: #a50;}
-.cm-s-default .cm-string {color: #a11;}
-.cm-s-default .cm-string-2 {color: #f50;}
-.cm-s-default .cm-meta {color: #555;}
-.cm-s-default .cm-qualifier {color: #555;}
-.cm-s-default .cm-builtin {color: #30a;}
-.cm-s-default .cm-bracket {color: #997;}
-.cm-s-default .cm-tag {color: #170;}
-.cm-s-default .cm-attribute {color: #00c;}
-.cm-s-default .cm-hr {color: #999;}
-.cm-s-default .cm-link {color: #00c;}
-
-.cm-s-default .cm-error {color: #f00;}
-.cm-invalidchar {color: #f00;}
-
-.CodeMirror-composing { border-bottom: 2px solid; }
-
-/* Default styles for common addons */
-
-div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
-div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
-.CodeMirror-matchingtag { background: rgba(255, 150, 0, .3); }
-.CodeMirror-activeline-background {background: #e8f2ff;}
-
-/* STOP */
-
-/* The rest of this file contains styles related to the mechanics of
-   the editor. You probably shouldn't touch them. */
-
-.CodeMirror {
-  position: relative;
-  overflow: hidden;
-  background: white;
-}
-
-.CodeMirror-scroll {
-  overflow: scroll !important; /* Things will break if this is overridden */
-  /* 30px is the magic margin used to hide the element's real scrollbars */
-  /* See overflow: hidden in .CodeMirror */
-  margin-bottom: -30px; margin-right: -30px;
-  padding-bottom: 30px;
-  height: 100%;
-  outline: none; /* Prevent dragging from highlighting the element */
-  position: relative;
-}
-.CodeMirror-sizer {
-  position: relative;
-  border-right: 30px solid transparent;
-}
-
-/* The fake, visible scrollbars. Used to force redraw during scrolling
-   before actuall scrolling happens, thus preventing shaking and
-   flickering artifacts. */
-.CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
-  position: absolute;
-  z-index: 6;
-  display: none;
-}
-.CodeMirror-vscrollbar {
-  right: 0; top: 0;
-  overflow-x: hidden;
-  overflow-y: scroll;
-}
-.CodeMirror-hscrollbar {
-  bottom: 0; left: 0;
-  overflow-y: hidden;
-  overflow-x: scroll;
-}
-.CodeMirror-scrollbar-filler {
-  right: 0; bottom: 0;
-}
-.CodeMirror-gutter-filler {
-  left: 0; bottom: 0;
-}
-
-.CodeMirror-gutters {
-  position: absolute; left: 0; top: 0;
-  z-index: 3;
-}
-.CodeMirror-gutter {
-  white-space: normal;
-  height: 100%;
-  display: inline-block;
-  margin-bottom: -30px;
-  /* Hack to make IE7 behave */
-  *zoom:1;
-  *display:inline;
-}
-.CodeMirror-gutter-wrapper {
-  position: absolute;
-  z-index: 4;
-  background: none !important;
-  border: none !important;
-}
-.CodeMirror-gutter-background {
-  position: absolute;
-  top: 0; bottom: 0;
-  z-index: 4;
-}
-.CodeMirror-gutter-elt {
-  position: absolute;
-  cursor: default;
-  z-index: 4;
-}
-.CodeMirror-gutter-wrapper {
-  -webkit-user-select: none;
-  -moz-user-select: none;
-  user-select: none;
-}
-
-.CodeMirror-lines {
-  cursor: text;
-  min-height: 1px; /* prevents collapsing before first draw */
-}
-.CodeMirror pre {
-  /* Reset some styles that the rest of the page might have set */
-  -moz-border-radius: 0; -webkit-border-radius: 0; border-radius: 0;
-  border-width: 0;
-  background: transparent;
-  font-family: inherit;
-  font-size: inherit;
-  margin: 0;
-  white-space: pre;
-  word-wrap: normal;
-  line-height: inherit;
-  color: inherit;
-  z-index: 2;
-  position: relative;
-  overflow: visible;
-  -webkit-tap-highlight-color: transparent;
-}
-.CodeMirror-wrap pre {
-  word-wrap: break-word;
-  white-space: pre-wrap;
-  word-break: normal;
-}
-
-.CodeMirror-linebackground {
-  position: absolute;
-  left: 0; right: 0; top: 0; bottom: 0;
-  z-index: 0;
-}
-
-.CodeMirror-linewidget {
-  position: relative;
-  z-index: 2;
-  overflow: auto;
-}
-
-.CodeMirror-widget {}
-
-.CodeMirror-code {
-  outline: none;
-}
-
-/* Force content-box sizing for the elements where we expect it */
-.CodeMirror-scroll,
-.CodeMirror-sizer,
-.CodeMirror-gutter,
-.CodeMirror-gutters,
-.CodeMirror-linenumber {
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
-}
-
-.CodeMirror-measure {
-  position: absolute;
-  width: 100%;
-  height: 0;
-  overflow: hidden;
-  visibility: hidden;
-}
-
-.CodeMirror-cursor { position: absolute; }
-.CodeMirror-measure pre { position: static; }
-
-div.CodeMirror-cursors {
-  visibility: hidden;
-  position: relative;
-  z-index: 3;
-}
-div.CodeMirror-dragcursors {
-  visibility: visible;
-}
-
-.CodeMirror-focused div.CodeMirror-cursors {
-  visibility: visible;
-}
-
-.CodeMirror-selected { background: #d9d9d9; }
-.CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; }
-.CodeMirror-crosshair { cursor: crosshair; }
-.CodeMirror-line::selection, .CodeMirror-line > span::selection, .CodeMirror-line > span > span::selection { background: #d7d4f0; }
-.CodeMirror-line::-moz-selection, .CodeMirror-line > span::-moz-selection, .CodeMirror-line > span > span::-moz-selection { background: #d7d4f0; }
-
-.cm-searching {
-  background: #ffa;
-  background: rgba(255, 255, 0, .4);
-}
-
-/* IE7 hack to prevent it from returning funny offsetTops on the spans */
-.CodeMirror span { *vertical-align: text-bottom; }
-
-/* Used to force a border model for a node */
-.cm-force-border { padding-right: .1px; }
-
-@media print {
-  /* Hide the cursor when printing */
-  .CodeMirror div.CodeMirror-cursors {
-    visibility: hidden;
-  }
-}
-
-/* See issue #2901 */
-.cm-tab-wrap-hack:after { content: ''; }
-
-/* Help users use markselection to safely style text background */
-span.CodeMirror-selectedtext { background: none; }
diff --git a/src/css/spell-checker.css b/src/css/spell-checker.css
deleted file mode 100644
index f7f3ca3..0000000
--- a/src/css/spell-checker.css
+++ /dev/null
@@ -1,3 +0,0 @@
-.CodeMirror .cm-spell-error:not(.cm-url):not(.cm-comment) {
-	 background: rgba(255, 0, 0, .15);
-}
\ No newline at end of file
diff --git a/src/js/codemirror/codemirror.js b/src/js/codemirror/codemirror.js
deleted file mode 100644
index 63a6229..0000000
--- a/src/js/codemirror/codemirror.js
+++ /dev/null
@@ -1,8848 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-// This is CodeMirror (http://codemirror.net), a code editor
-// implemented in JavaScript on top of the browser's DOM.
-//
-// You can find some technical background for some of the code below
-// at http://marijnhaverbeke.nl/blog/#cm-internals .
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    module.exports = mod();
-  else if (typeof define == "function" && define.amd) // AMD
-    return define([], mod);
-  else // Plain browser env
-    this.CodeMirror = mod();
-})(function() {
-  "use strict";
-
-  // BROWSER SNIFFING
-
-  // Kludges for bugs and behavior differences that can't be feature
-  // detected are enabled based on userAgent etc sniffing.
-
-  var gecko = /gecko\/\d/i.test(navigator.userAgent);
-  var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
-  var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent);
-  var ie = ie_upto10 || ie_11up;
-  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]);
-  var webkit = /WebKit\//.test(navigator.userAgent);
-  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
-  var chrome = /Chrome\//.test(navigator.userAgent);
-  var presto = /Opera\//.test(navigator.userAgent);
-  var safari = /Apple Computer/.test(navigator.vendor);
-  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
-  var phantom = /PhantomJS/.test(navigator.userAgent);
-
-  var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
-  // This is woefully incomplete. Suggestions for alternative methods welcome.
-  var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
-  var mac = ios || /Mac/.test(navigator.platform);
-  var windows = /win/i.test(navigator.platform);
-
-  var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
-  if (presto_version) presto_version = Number(presto_version[1]);
-  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
-  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
-  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
-  var captureRightClick = gecko || (ie && ie_version >= 9);
-
-  // Optimize some code when these features are not used.
-  var sawReadOnlySpans = false, sawCollapsedSpans = false;
-
-  // EDITOR CONSTRUCTOR
-
-  // A CodeMirror instance represents an editor. This is the object
-  // that user code is usually dealing with.
-
-  function CodeMirror(place, options) {
-    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
-
-    this.options = options = options ? copyObj(options) : {};
-    // Determine effective options based on given values and defaults.
-    copyObj(defaults, options, false);
-    setGuttersForLineNumbers(options);
-
-    var doc = options.value;
-    if (typeof doc == "string") doc = new Doc(doc, options.mode, null, options.lineSeparator);
-    this.doc = doc;
-
-    var input = new CodeMirror.inputStyles[options.inputStyle](this);
-    var display = this.display = new Display(place, doc, input);
-    display.wrapper.CodeMirror = this;
-    updateGutters(this);
-    themeChanged(this);
-    if (options.lineWrapping)
-      this.display.wrapper.className += " CodeMirror-wrap";
-    if (options.autofocus && !mobile) display.input.focus();
-    initScrollbars(this);
-
-    this.state = {
-      keyMaps: [],  // stores maps added by addKeyMap
-      overlays: [], // highlighting overlays, as added by addOverlay
-      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
-      overwrite: false,
-      delayingBlurEvent: false,
-      focused: false,
-      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
-      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
-      selectingText: false,
-      draggingText: false,
-      highlight: new Delayed(), // stores highlight worker timeout
-      keySeq: null,  // Unfinished key sequence
-      specialChars: null
-    };
-
-    var cm = this;
-
-    // Override magic textarea content restore that IE sometimes does
-    // on our hidden textarea on reload
-    if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20);
-
-    registerEventHandlers(this);
-    ensureGlobalHandlers();
-
-    startOperation(this);
-    this.curOp.forceUpdate = true;
-    attachDoc(this, doc);
-
-    if ((options.autofocus && !mobile) || cm.hasFocus())
-      setTimeout(bind(onFocus, this), 20);
-    else
-      onBlur(this);
-
-    for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
-      optionHandlers[opt](this, options[opt], Init);
-    maybeUpdateLineNumberWidth(this);
-    if (options.finishInit) options.finishInit(this);
-    for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
-    endOperation(this);
-    // Suppress optimizelegibility in Webkit, since it breaks text
-    // measuring on line wrapping boundaries.
-    if (webkit && options.lineWrapping &&
-        getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
-      display.lineDiv.style.textRendering = "auto";
-  }
-
-  // DISPLAY CONSTRUCTOR
-
-  // The display handles the DOM integration, both for input reading
-  // and content drawing. It holds references to DOM nodes and
-  // display-related state.
-
-  function Display(place, doc, input) {
-    var d = this;
-    this.input = input;
-
-    // Covers bottom-right square when both scrollbars are present.
-    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
-    d.scrollbarFiller.setAttribute("cm-not-content", "true");
-    // Covers bottom of gutter when coverGutterNextToScrollbar is on
-    // and h scrollbar is present.
-    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
-    d.gutterFiller.setAttribute("cm-not-content", "true");
-    // Will contain the actual code, positioned to cover the viewport.
-    d.lineDiv = elt("div", null, "CodeMirror-code");
-    // Elements are added to these to represent selection and cursors.
-    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
-    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
-    // A visibility: hidden element used to find the size of things.
-    d.measure = elt("div", null, "CodeMirror-measure");
-    // When lines outside of the viewport are measured, they are drawn in this.
-    d.lineMeasure = elt("div", null, "CodeMirror-measure");
-    // Wraps everything that needs to exist inside the vertically-padded coordinate system
-    d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
-                      null, "position: relative; outline: none");
-    // Moved around its parent to cover visible view.
-    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
-    // Set to the height of the document, allowing scrolling.
-    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
-    d.sizerWidth = null;
-    // Behavior of elts with overflow: auto and padding is
-    // inconsistent across browsers. This is used to ensure the
-    // scrollable area is big enough.
-    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
-    // Will contain the gutters, if any.
-    d.gutters = elt("div", null, "CodeMirror-gutters");
-    d.lineGutter = null;
-    // Actual scrollable element.
-    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
-    d.scroller.setAttribute("tabIndex", "-1");
-    // The element in which the editor lives.
-    d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
-
-    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
-    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
-    if (!webkit && !(gecko && mobile)) d.scroller.draggable = true;
-
-    if (place) {
-      if (place.appendChild) place.appendChild(d.wrapper);
-      else place(d.wrapper);
-    }
-
-    // Current rendered range (may be bigger than the view window).
-    d.viewFrom = d.viewTo = doc.first;
-    d.reportedViewFrom = d.reportedViewTo = doc.first;
-    // Information about the rendered lines.
-    d.view = [];
-    d.renderedView = null;
-    // Holds info about a single rendered line when it was rendered
-    // for measurement, while not in view.
-    d.externalMeasured = null;
-    // Empty space (in pixels) above the view
-    d.viewOffset = 0;
-    d.lastWrapHeight = d.lastWrapWidth = 0;
-    d.updateLineNumbers = null;
-
-    d.nativeBarWidth = d.barHeight = d.barWidth = 0;
-    d.scrollbarsClipped = false;
-
-    // Used to only resize the line number gutter when necessary (when
-    // the amount of lines crosses a boundary that makes its width change)
-    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
-    // Set to true when a non-horizontal-scrolling line widget is
-    // added. As an optimization, line widget aligning is skipped when
-    // this is false.
-    d.alignWidgets = false;
-
-    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
-
-    // Tracks the maximum line length so that the horizontal scrollbar
-    // can be kept static when scrolling.
-    d.maxLine = null;
-    d.maxLineLength = 0;
-    d.maxLineChanged = false;
-
-    // Used for measuring wheel scrolling granularity
-    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
-
-    // True when shift is held down.
-    d.shift = false;
-
-    // Used to track whether anything happened since the context menu
-    // was opened.
-    d.selForContextMenu = null;
-
-    d.activeTouch = null;
-
-    input.init(d);
-  }
-
-  // STATE UPDATES
-
-  // Used to get the editor into a consistent state again when options change.
-
-  function loadMode(cm) {
-    cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
-    resetModeState(cm);
-  }
-
-  function resetModeState(cm) {
-    cm.doc.iter(function(line) {
-      if (line.stateAfter) line.stateAfter = null;
-      if (line.styles) line.styles = null;
-    });
-    cm.doc.frontier = cm.doc.first;
-    startWorker(cm, 100);
-    cm.state.modeGen++;
-    if (cm.curOp) regChange(cm);
-  }
-
-  function wrappingChanged(cm) {
-    if (cm.options.lineWrapping) {
-      addClass(cm.display.wrapper, "CodeMirror-wrap");
-      cm.display.sizer.style.minWidth = "";
-      cm.display.sizerWidth = null;
-    } else {
-      rmClass(cm.display.wrapper, "CodeMirror-wrap");
-      findMaxLine(cm);
-    }
-    estimateLineHeights(cm);
-    regChange(cm);
-    clearCaches(cm);
-    setTimeout(function(){updateScrollbars(cm);}, 100);
-  }
-
-  // Returns a function that estimates the height of a line, to use as
-  // first approximation until the line becomes visible (and is thus
-  // properly measurable).
-  function estimateHeight(cm) {
-    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
-    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
-    return function(line) {
-      if (lineIsHidden(cm.doc, line)) return 0;
-
-      var widgetsHeight = 0;
-      if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
-        if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
-      }
-
-      if (wrapping)
-        return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
-      else
-        return widgetsHeight + th;
-    };
-  }
-
-  function estimateLineHeights(cm) {
-    var doc = cm.doc, est = estimateHeight(cm);
-    doc.iter(function(line) {
-      var estHeight = est(line);
-      if (estHeight != line.height) updateLineHeight(line, estHeight);
-    });
-  }
-
-  function themeChanged(cm) {
-    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
-      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
-    clearCaches(cm);
-  }
-
-  function guttersChanged(cm) {
-    updateGutters(cm);
-    regChange(cm);
-    setTimeout(function(){alignHorizontally(cm);}, 20);
-  }
-
-  // Rebuild the gutter elements, ensure the margin to the left of the
-  // code matches their width.
-  function updateGutters(cm) {
-    var gutters = cm.display.gutters, specs = cm.options.gutters;
-    removeChildren(gutters);
-    for (var i = 0; i < specs.length; ++i) {
-      var gutterClass = specs[i];
-      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
-      if (gutterClass == "CodeMirror-linenumbers") {
-        cm.display.lineGutter = gElt;
-        gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
-      }
-    }
-    gutters.style.display = i ? "" : "none";
-    updateGutterSpace(cm);
-  }
-
-  function updateGutterSpace(cm) {
-    var width = cm.display.gutters.offsetWidth;
-    cm.display.sizer.style.marginLeft = width + "px";
-  }
-
-  // Compute the character length of a line, taking into account
-  // collapsed ranges (see markText) that might hide parts, and join
-  // other lines onto it.
-  function lineLength(line) {
-    if (line.height == 0) return 0;
-    var len = line.text.length, merged, cur = line;
-    while (merged = collapsedSpanAtStart(cur)) {
-      var found = merged.find(0, true);
-      cur = found.from.line;
-      len += found.from.ch - found.to.ch;
-    }
-    cur = line;
-    while (merged = collapsedSpanAtEnd(cur)) {
-      var found = merged.find(0, true);
-      len -= cur.text.length - found.from.ch;
-      cur = found.to.line;
-      len += cur.text.length - found.to.ch;
-    }
-    return len;
-  }
-
-  // Find the longest line in the document.
-  function findMaxLine(cm) {
-    var d = cm.display, doc = cm.doc;
-    d.maxLine = getLine(doc, doc.first);
-    d.maxLineLength = lineLength(d.maxLine);
-    d.maxLineChanged = true;
-    doc.iter(function(line) {
-      var len = lineLength(line);
-      if (len > d.maxLineLength) {
-        d.maxLineLength = len;
-        d.maxLine = line;
-      }
-    });
-  }
-
-  // Make sure the gutters options contains the element
-  // "CodeMirror-linenumbers" when the lineNumbers option is true.
-  function setGuttersForLineNumbers(options) {
-    var found = indexOf(options.gutters, "CodeMirror-linenumbers");
-    if (found == -1 && options.lineNumbers) {
-      options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
-    } else if (found > -1 && !options.lineNumbers) {
-      options.gutters = options.gutters.slice(0);
-      options.gutters.splice(found, 1);
-    }
-  }
-
-  // SCROLLBARS
-
-  // Prepare DOM reads needed to update the scrollbars. Done in one
-  // shot to minimize update/measure roundtrips.
-  function measureForScrollbars(cm) {
-    var d = cm.display, gutterW = d.gutters.offsetWidth;
-    var docH = Math.round(cm.doc.height + paddingVert(cm.display));
-    return {
-      clientHeight: d.scroller.clientHeight,
-      viewHeight: d.wrapper.clientHeight,
-      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
-      viewWidth: d.wrapper.clientWidth,
-      barLeft: cm.options.fixedGutter ? gutterW : 0,
-      docHeight: docH,
-      scrollHeight: docH + scrollGap(cm) + d.barHeight,
-      nativeBarWidth: d.nativeBarWidth,
-      gutterWidth: gutterW
-    };
-  }
-
-  function NativeScrollbars(place, scroll, cm) {
-    this.cm = cm;
-    var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
-    var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
-    place(vert); place(horiz);
-
-    on(vert, "scroll", function() {
-      if (vert.clientHeight) scroll(vert.scrollTop, "vertical");
-    });
-    on(horiz, "scroll", function() {
-      if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal");
-    });
-
-    this.checkedOverlay = false;
-    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
-    if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px";
-  }
-
-  NativeScrollbars.prototype = copyObj({
-    update: function(measure) {
-      var needsH = measure.scrollWidth > measure.clientWidth + 1;
-      var needsV = measure.scrollHeight > measure.clientHeight + 1;
-      var sWidth = measure.nativeBarWidth;
-
-      if (needsV) {
-        this.vert.style.display = "block";
-        this.vert.style.bottom = needsH ? sWidth + "px" : "0";
-        var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
-        // A bug in IE8 can cause this value to be negative, so guard it.
-        this.vert.firstChild.style.height =
-          Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
-      } else {
-        this.vert.style.display = "";
-        this.vert.firstChild.style.height = "0";
-      }
-
-      if (needsH) {
-        this.horiz.style.display = "block";
-        this.horiz.style.right = needsV ? sWidth + "px" : "0";
-        this.horiz.style.left = measure.barLeft + "px";
-        var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
-        this.horiz.firstChild.style.width =
-          (measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
-      } else {
-        this.horiz.style.display = "";
-        this.horiz.firstChild.style.width = "0";
-      }
-
-      if (!this.checkedOverlay && measure.clientHeight > 0) {
-        if (sWidth == 0) this.overlayHack();
-        this.checkedOverlay = true;
-      }
-
-      return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0};
-    },
-    setScrollLeft: function(pos) {
-      if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos;
-    },
-    setScrollTop: function(pos) {
-      if (this.vert.scrollTop != pos) this.vert.scrollTop = pos;
-    },
-    overlayHack: function() {
-      var w = mac && !mac_geMountainLion ? "12px" : "18px";
-      this.horiz.style.minHeight = this.vert.style.minWidth = w;
-      var self = this;
-      var barMouseDown = function(e) {
-        if (e_target(e) != self.vert && e_target(e) != self.horiz)
-          operation(self.cm, onMouseDown)(e);
-      };
-      on(this.vert, "mousedown", barMouseDown);
-      on(this.horiz, "mousedown", barMouseDown);
-    },
-    clear: function() {
-      var parent = this.horiz.parentNode;
-      parent.removeChild(this.horiz);
-      parent.removeChild(this.vert);
-    }
-  }, NativeScrollbars.prototype);
-
-  function NullScrollbars() {}
-
-  NullScrollbars.prototype = copyObj({
-    update: function() { return {bottom: 0, right: 0}; },
-    setScrollLeft: function() {},
-    setScrollTop: function() {},
-    clear: function() {}
-  }, NullScrollbars.prototype);
-
-  CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};
-
-  function initScrollbars(cm) {
-    if (cm.display.scrollbars) {
-      cm.display.scrollbars.clear();
-      if (cm.display.scrollbars.addClass)
-        rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);
-    }
-
-    cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) {
-      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
-      // Prevent clicks in the scrollbars from killing focus
-      on(node, "mousedown", function() {
-        if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0);
-      });
-      node.setAttribute("cm-not-content", "true");
-    }, function(pos, axis) {
-      if (axis == "horizontal") setScrollLeft(cm, pos);
-      else setScrollTop(cm, pos);
-    }, cm);
-    if (cm.display.scrollbars.addClass)
-      addClass(cm.display.wrapper, cm.display.scrollbars.addClass);
-  }
-
-  function updateScrollbars(cm, measure) {
-    if (!measure) measure = measureForScrollbars(cm);
-    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
-    updateScrollbarsInner(cm, measure);
-    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
-      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
-        updateHeightsInViewport(cm);
-      updateScrollbarsInner(cm, measureForScrollbars(cm));
-      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
-    }
-  }
-
-  // Re-synchronize the fake scrollbars with the actual size of the
-  // content.
-  function updateScrollbarsInner(cm, measure) {
-    var d = cm.display;
-    var sizes = d.scrollbars.update(measure);
-
-    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
-    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";
-
-    if (sizes.right && sizes.bottom) {
-      d.scrollbarFiller.style.display = "block";
-      d.scrollbarFiller.style.height = sizes.bottom + "px";
-      d.scrollbarFiller.style.width = sizes.right + "px";
-    } else d.scrollbarFiller.style.display = "";
-    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
-      d.gutterFiller.style.display = "block";
-      d.gutterFiller.style.height = sizes.bottom + "px";
-      d.gutterFiller.style.width = measure.gutterWidth + "px";
-    } else d.gutterFiller.style.display = "";
-  }
-
-  // Compute the lines that are visible in a given viewport (defaults
-  // the the current scroll position). viewport may contain top,
-  // height, and ensure (see op.scrollToPos) properties.
-  function visibleLines(display, doc, viewport) {
-    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
-    top = Math.floor(top - paddingTop(display));
-    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;
-
-    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
-    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
-    // forces those lines into the viewport (if possible).
-    if (viewport && viewport.ensure) {
-      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
-      if (ensureFrom < from) {
-        from = ensureFrom;
-        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
-      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
-        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
-        to = ensureTo;
-      }
-    }
-    return {from: from, to: Math.max(to, from + 1)};
-  }
-
-  // LINE NUMBERS
-
-  // Re-align line numbers and gutter marks to compensate for
-  // horizontal scrolling.
-  function alignHorizontally(cm) {
-    var display = cm.display, view = display.view;
-    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
-    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
-    var gutterW = display.gutters.offsetWidth, left = comp + "px";
-    for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
-      if (cm.options.fixedGutter && view[i].gutter)
-        view[i].gutter.style.left = left;
-      var align = view[i].alignable;
-      if (align) for (var j = 0; j < align.length; j++)
-        align[j].style.left = left;
-    }
-    if (cm.options.fixedGutter)
-      display.gutters.style.left = (comp + gutterW) + "px";
-  }
-
-  // Used to ensure that the line number gutter is still the right
-  // size for the current document size. Returns true when an update
-  // is needed.
-  function maybeUpdateLineNumberWidth(cm) {
-    if (!cm.options.lineNumbers) return false;
-    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
-    if (last.length != display.lineNumChars) {
-      var test = display.measure.appendChild(elt("div", [elt("div", last)],
-                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
-      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
-      display.lineGutter.style.width = "";
-      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
-      display.lineNumWidth = display.lineNumInnerWidth + padding;
-      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
-      display.lineGutter.style.width = display.lineNumWidth + "px";
-      updateGutterSpace(cm);
-      return true;
-    }
-    return false;
-  }
-
-  function lineNumberFor(options, i) {
-    return String(options.lineNumberFormatter(i + options.firstLineNumber));
-  }
-
-  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
-  // but using getBoundingClientRect to get a sub-pixel-accurate
-  // result.
-  function compensateForHScroll(display) {
-    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
-  }
-
-  // DISPLAY DRAWING
-
-  function DisplayUpdate(cm, viewport, force) {
-    var display = cm.display;
-
-    this.viewport = viewport;
-    // Store some values that we'll need later (but don't want to force a relayout for)
-    this.visible = visibleLines(display, cm.doc, viewport);
-    this.editorIsHidden = !display.wrapper.offsetWidth;
-    this.wrapperHeight = display.wrapper.clientHeight;
-    this.wrapperWidth = display.wrapper.clientWidth;
-    this.oldDisplayWidth = displayWidth(cm);
-    this.force = force;
-    this.dims = getDimensions(cm);
-    this.events = [];
-  }
-
-  DisplayUpdate.prototype.signal = function(emitter, type) {
-    if (hasHandler(emitter, type))
-      this.events.push(arguments);
-  };
-  DisplayUpdate.prototype.finish = function() {
-    for (var i = 0; i < this.events.length; i++)
-      signal.apply(null, this.events[i]);
-  };
-
-  function maybeClipScrollbars(cm) {
-    var display = cm.display;
-    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
-      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
-      display.heightForcer.style.height = scrollGap(cm) + "px";
-      display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
-      display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
-      display.scrollbarsClipped = true;
-    }
-  }
-
-  // Does the actual updating of the line display. Bails out
-  // (returning false) when there is nothing to be done and forced is
-  // false.
-  function updateDisplayIfNeeded(cm, update) {
-    var display = cm.display, doc = cm.doc;
-
-    if (update.editorIsHidden) {
-      resetView(cm);
-      return false;
-    }
-
-    // Bail out if the visible area is already rendered and nothing changed.
-    if (!update.force &&
-        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
-        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
-        display.renderedView == display.view && countDirtyView(cm) == 0)
-      return false;
-
-    if (maybeUpdateLineNumberWidth(cm)) {
-      resetView(cm);
-      update.dims = getDimensions(cm);
-    }
-
-    // Compute a suitable new viewport (from & to)
-    var end = doc.first + doc.size;
-    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
-    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
-    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
-    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
-    if (sawCollapsedSpans) {
-      from = visualLineNo(cm.doc, from);
-      to = visualLineEndNo(cm.doc, to);
-    }
-
-    var different = from != display.viewFrom || to != display.viewTo ||
-      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
-    adjustView(cm, from, to);
-
-    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
-    // Position the mover div to align with the current scroll position
-    cm.display.mover.style.top = display.viewOffset + "px";
-
-    var toUpdate = countDirtyView(cm);
-    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
-        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
-      return false;
-
-    // For big changes, we hide the enclosing element during the
-    // update, since that speeds up the operations on most browsers.
-    var focused = activeElt();
-    if (toUpdate > 4) display.lineDiv.style.display = "none";
-    patchDisplay(cm, display.updateLineNumbers, update.dims);
-    if (toUpdate > 4) display.lineDiv.style.display = "";
-    display.renderedView = display.view;
-    // There might have been a widget with a focused element that got
-    // hidden or updated, if so re-focus it.
-    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();
-
-    // Prevent selection and cursors from interfering with the scroll
-    // width and height.
-    removeChildren(display.cursorDiv);
-    removeChildren(display.selectionDiv);
-    display.gutters.style.height = display.sizer.style.minHeight = 0;
-
-    if (different) {
-      display.lastWrapHeight = update.wrapperHeight;
-      display.lastWrapWidth = update.wrapperWidth;
-      startWorker(cm, 400);
-    }
-
-    display.updateLineNumbers = null;
-
-    return true;
-  }
-
-  function postUpdateDisplay(cm, update) {
-    var viewport = update.viewport;
-    for (var first = true;; first = false) {
-      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
-        // Clip forced viewport to actual scrollable area.
-        if (viewport && viewport.top != null)
-          viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)};
-        // Updated line heights might result in the drawn area not
-        // actually covering the viewport. Keep looping until it does.
-        update.visible = visibleLines(cm.display, cm.doc, viewport);
-        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
-          break;
-      }
-      if (!updateDisplayIfNeeded(cm, update)) break;
-      updateHeightsInViewport(cm);
-      var barMeasure = measureForScrollbars(cm);
-      updateSelection(cm);
-      setDocumentHeight(cm, barMeasure);
-      updateScrollbars(cm, barMeasure);
-    }
-
-    update.signal(cm, "update", cm);
-    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
-      update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
-      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
-    }
-  }
-
-  function updateDisplaySimple(cm, viewport) {
-    var update = new DisplayUpdate(cm, viewport);
-    if (updateDisplayIfNeeded(cm, update)) {
-      updateHeightsInViewport(cm);
-      postUpdateDisplay(cm, update);
-      var barMeasure = measureForScrollbars(cm);
-      updateSelection(cm);
-      setDocumentHeight(cm, barMeasure);
-      updateScrollbars(cm, barMeasure);
-      update.finish();
-    }
-  }
-
-  function setDocumentHeight(cm, measure) {
-    cm.display.sizer.style.minHeight = measure.docHeight + "px";
-    var total = measure.docHeight + cm.display.barHeight;
-    cm.display.heightForcer.style.top = total + "px";
-    cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px";
-  }
-
-  // Read the actual heights of the rendered lines, and update their
-  // stored heights to match.
-  function updateHeightsInViewport(cm) {
-    var display = cm.display;
-    var prevBottom = display.lineDiv.offsetTop;
-    for (var i = 0; i < display.view.length; i++) {
-      var cur = display.view[i], height;
-      if (cur.hidden) continue;
-      if (ie && ie_version < 8) {
-        var bot = cur.node.offsetTop + cur.node.offsetHeight;
-        height = bot - prevBottom;
-        prevBottom = bot;
-      } else {
-        var box = cur.node.getBoundingClientRect();
-        height = box.bottom - box.top;
-      }
-      var diff = cur.line.height - height;
-      if (height < 2) height = textHeight(display);
-      if (diff > .001 || diff < -.001) {
-        updateLineHeight(cur.line, height);
-        updateWidgetHeight(cur.line);
-        if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
-          updateWidgetHeight(cur.rest[j]);
-      }
-    }
-  }
-
-  // Read and store the height of line widgets associated with the
-  // given line.
-  function updateWidgetHeight(line) {
-    if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
-      line.widgets[i].height = line.widgets[i].node.offsetHeight;
-  }
-
-  // Do a bulk-read of the DOM positions and sizes needed to draw the
-  // view, so that we don't interleave reading and writing to the DOM.
-  function getDimensions(cm) {
-    var d = cm.display, left = {}, width = {};
-    var gutterLeft = d.gutters.clientLeft;
-    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
-      left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
-      width[cm.options.gutters[i]] = n.clientWidth;
-    }
-    return {fixedPos: compensateForHScroll(d),
-            gutterTotalWidth: d.gutters.offsetWidth,
-            gutterLeft: left,
-            gutterWidth: width,
-            wrapperWidth: d.wrapper.clientWidth};
-  }
-
-  // Sync the actual display DOM structure with display.view, removing
-  // nodes for lines that are no longer in view, and creating the ones
-  // that are not there yet, and updating the ones that are out of
-  // date.
-  function patchDisplay(cm, updateNumbersFrom, dims) {
-    var display = cm.display, lineNumbers = cm.options.lineNumbers;
-    var container = display.lineDiv, cur = container.firstChild;
-
-    function rm(node) {
-      var next = node.nextSibling;
-      // Works around a throw-scroll bug in OS X Webkit
-      if (webkit && mac && cm.display.currentWheelTarget == node)
-        node.style.display = "none";
-      else
-        node.parentNode.removeChild(node);
-      return next;
-    }
-
-    var view = display.view, lineN = display.viewFrom;
-    // Loop over the elements in the view, syncing cur (the DOM nodes
-    // in display.lineDiv) with the view as we go.
-    for (var i = 0; i < view.length; i++) {
-      var lineView = view[i];
-      if (lineView.hidden) {
-      } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
-        var node = buildLineElement(cm, lineView, lineN, dims);
-        container.insertBefore(node, cur);
-      } else { // Already drawn
-        while (cur != lineView.node) cur = rm(cur);
-        var updateNumber = lineNumbers && updateNumbersFrom != null &&
-          updateNumbersFrom <= lineN && lineView.lineNumber;
-        if (lineView.changes) {
-          if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
-          updateLineForChanges(cm, lineView, lineN, dims);
-        }
-        if (updateNumber) {
-          removeChildren(lineView.lineNumber);
-          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
-        }
-        cur = lineView.node.nextSibling;
-      }
-      lineN += lineView.size;
-    }
-    while (cur) cur = rm(cur);
-  }
-
-  // When an aspect of a line changes, a string is added to
-  // lineView.changes. This updates the relevant part of the line's
-  // DOM structure.
-  function updateLineForChanges(cm, lineView, lineN, dims) {
-    for (var j = 0; j < lineView.changes.length; j++) {
-      var type = lineView.changes[j];
-      if (type == "text") updateLineText(cm, lineView);
-      else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
-      else if (type == "class") updateLineClasses(lineView);
-      else if (type == "widget") updateLineWidgets(cm, lineView, dims);
-    }
-    lineView.changes = null;
-  }
-
-  // Lines with gutter elements, widgets or a background class need to
-  // be wrapped, and have the extra elements added to the wrapper div
-  function ensureLineWrapped(lineView) {
-    if (lineView.node == lineView.text) {
-      lineView.node = elt("div", null, null, "position: relative");
-      if (lineView.text.parentNode)
-        lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
-      lineView.node.appendChild(lineView.text);
-      if (ie && ie_version < 8) lineView.node.style.zIndex = 2;
-    }
-    return lineView.node;
-  }
-
-  function updateLineBackground(lineView) {
-    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
-    if (cls) cls += " CodeMirror-linebackground";
-    if (lineView.background) {
-      if (cls) lineView.background.className = cls;
-      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
-    } else if (cls) {
-      var wrap = ensureLineWrapped(lineView);
-      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
-    }
-  }
-
-  // Wrapper around buildLineContent which will reuse the structure
-  // in display.externalMeasured when possible.
-  function getLineContent(cm, lineView) {
-    var ext = cm.display.externalMeasured;
-    if (ext && ext.line == lineView.line) {
-      cm.display.externalMeasured = null;
-      lineView.measure = ext.measure;
-      return ext.built;
-    }
-    return buildLineContent(cm, lineView);
-  }
-
-  // Redraw the line's text. Interacts with the background and text
-  // classes because the mode may output tokens that influence these
-  // classes.
-  function updateLineText(cm, lineView) {
-    var cls = lineView.text.className;
-    var built = getLineContent(cm, lineView);
-    if (lineView.text == lineView.node) lineView.node = built.pre;
-    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
-    lineView.text = built.pre;
-    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
-      lineView.bgClass = built.bgClass;
-      lineView.textClass = built.textClass;
-      updateLineClasses(lineView);
-    } else if (cls) {
-      lineView.text.className = cls;
-    }
-  }
-
-  function updateLineClasses(lineView) {
-    updateLineBackground(lineView);
-    if (lineView.line.wrapClass)
-      ensureLineWrapped(lineView).className = lineView.line.wrapClass;
-    else if (lineView.node != lineView.text)
-      lineView.node.className = "";
-    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
-    lineView.text.className = textClass || "";
-  }
-
-  function updateLineGutter(cm, lineView, lineN, dims) {
-    if (lineView.gutter) {
-      lineView.node.removeChild(lineView.gutter);
-      lineView.gutter = null;
-    }
-    if (lineView.gutterBackground) {
-      lineView.node.removeChild(lineView.gutterBackground);
-      lineView.gutterBackground = null;
-    }
-    if (lineView.line.gutterClass) {
-      var wrap = ensureLineWrapped(lineView);
-      lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
-                                      "left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) +
-                                      "px; width: " + dims.gutterTotalWidth + "px");
-      wrap.insertBefore(lineView.gutterBackground, lineView.text);
-    }
-    var markers = lineView.line.gutterMarkers;
-    if (cm.options.lineNumbers || markers) {
-      var wrap = ensureLineWrapped(lineView);
-      var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", "left: " +
-                                             (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px");
-      cm.display.input.setUneditable(gutterWrap);
-      wrap.insertBefore(gutterWrap, lineView.text);
-      if (lineView.line.gutterClass)
-        gutterWrap.className += " " + lineView.line.gutterClass;
-      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
-        lineView.lineNumber = gutterWrap.appendChild(
-          elt("div", lineNumberFor(cm.options, lineN),
-              "CodeMirror-linenumber CodeMirror-gutter-elt",
-              "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
-              + cm.display.lineNumInnerWidth + "px"));
-      if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
-        var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
-        if (found)
-          gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
-                                     dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
-      }
-    }
-  }
-
-  function updateLineWidgets(cm, lineView, dims) {
-    if (lineView.alignable) lineView.alignable = null;
-    for (var node = lineView.node.firstChild, next; node; node = next) {
-      var next = node.nextSibling;
-      if (node.className == "CodeMirror-linewidget")
-        lineView.node.removeChild(node);
-    }
-    insertLineWidgets(cm, lineView, dims);
-  }
-
-  // Build a line's DOM representation from scratch
-  function buildLineElement(cm, lineView, lineN, dims) {
-    var built = getLineContent(cm, lineView);
-    lineView.text = lineView.node = built.pre;
-    if (built.bgClass) lineView.bgClass = built.bgClass;
-    if (built.textClass) lineView.textClass = built.textClass;
-
-    updateLineClasses(lineView);
-    updateLineGutter(cm, lineView, lineN, dims);
-    insertLineWidgets(cm, lineView, dims);
-    return lineView.node;
-  }
-
-  // A lineView may contain multiple logical lines (when merged by
-  // collapsed spans). The widgets for all of them need to be drawn.
-  function insertLineWidgets(cm, lineView, dims) {
-    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
-    if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
-      insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false);
-  }
-
-  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
-    if (!line.widgets) return;
-    var wrap = ensureLineWrapped(lineView);
-    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
-      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
-      if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true");
-      positionLineWidget(widget, node, lineView, dims);
-      cm.display.input.setUneditable(node);
-      if (allowAbove && widget.above)
-        wrap.insertBefore(node, lineView.gutter || lineView.text);
-      else
-        wrap.appendChild(node);
-      signalLater(widget, "redraw");
-    }
-  }
-
-  function positionLineWidget(widget, node, lineView, dims) {
-    if (widget.noHScroll) {
-      (lineView.alignable || (lineView.alignable = [])).push(node);
-      var width = dims.wrapperWidth;
-      node.style.left = dims.fixedPos + "px";
-      if (!widget.coverGutter) {
-        width -= dims.gutterTotalWidth;
-        node.style.paddingLeft = dims.gutterTotalWidth + "px";
-      }
-      node.style.width = width + "px";
-    }
-    if (widget.coverGutter) {
-      node.style.zIndex = 5;
-      node.style.position = "relative";
-      if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
-    }
-  }
-
-  // POSITION OBJECT
-
-  // A Pos instance represents a position within the text.
-  var Pos = CodeMirror.Pos = function(line, ch) {
-    if (!(this instanceof Pos)) return new Pos(line, ch);
-    this.line = line; this.ch = ch;
-  };
-
-  // Compare two positions, return 0 if they are the same, a negative
-  // number when a is less, and a positive number otherwise.
-  var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };
-
-  function copyPos(x) {return Pos(x.line, x.ch);}
-  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
-  function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }
-
-  // INPUT HANDLING
-
-  function ensureFocus(cm) {
-    if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
-  }
-
-  function isReadOnly(cm) {
-    return cm.options.readOnly || cm.doc.cantEdit;
-  }
-
-  // This will be set to an array of strings when copying, so that,
-  // when pasting, we know what kind of selections the copied text
-  // was made out of.
-  var lastCopied = null;
-
-  function applyTextInput(cm, inserted, deleted, sel, origin) {
-    var doc = cm.doc;
-    cm.display.shift = false;
-    if (!sel) sel = doc.sel;
-
-    var paste = cm.state.pasteIncoming || origin == "paste";
-    var textLines = doc.splitLines(inserted), multiPaste = null;
-    // When pasing N lines into N selections, insert one line per selection
-    if (paste && sel.ranges.length > 1) {
-      if (lastCopied && lastCopied.join("\n") == inserted) {
-        if (sel.ranges.length % lastCopied.length == 0) {
-          multiPaste = [];
-          for (var i = 0; i < lastCopied.length; i++)
-            multiPaste.push(doc.splitLines(lastCopied[i]));
-        }
-      } else if (textLines.length == sel.ranges.length) {
-        multiPaste = map(textLines, function(l) { return [l]; });
-      }
-    }
-
-    // Normal behavior is to insert the new text into every selection
-    for (var i = sel.ranges.length - 1; i >= 0; i--) {
-      var range = sel.ranges[i];
-      var from = range.from(), to = range.to();
-      if (range.empty()) {
-        if (deleted && deleted > 0) // Handle deletion
-          from = Pos(from.line, from.ch - deleted);
-        else if (cm.state.overwrite && !paste) // Handle overwrite
-          to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
-      }
-      var updateInput = cm.curOp.updateInput;
-      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,
-                         origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")};
-      makeChange(cm.doc, changeEvent);
-      signalLater(cm, "inputRead", cm, changeEvent);
-    }
-    if (inserted && !paste)
-      triggerElectric(cm, inserted);
-
-    ensureCursorVisible(cm);
-    cm.curOp.updateInput = updateInput;
-    cm.curOp.typing = true;
-    cm.state.pasteIncoming = cm.state.cutIncoming = false;
-  }
-
-  function handlePaste(e, cm) {
-    var pasted = e.clipboardData && e.clipboardData.getData("text/plain");
-    if (pasted) {
-      e.preventDefault();
-      if (!isReadOnly(cm) && !cm.options.disableInput)
-        runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, "paste"); });
-      return true;
-    }
-  }
-
-  function triggerElectric(cm, inserted) {
-    // When an 'electric' character is inserted, immediately trigger a reindent
-    if (!cm.options.electricChars || !cm.options.smartIndent) return;
-    var sel = cm.doc.sel;
-
-    for (var i = sel.ranges.length - 1; i >= 0; i--) {
-      var range = sel.ranges[i];
-      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) continue;
-      var mode = cm.getModeAt(range.head);
-      var indented = false;
-      if (mode.electricChars) {
-        for (var j = 0; j < mode.electricChars.length; j++)
-          if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
-            indented = indentLine(cm, range.head.line, "smart");
-            break;
-          }
-      } else if (mode.electricInput) {
-        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
-          indented = indentLine(cm, range.head.line, "smart");
-      }
-      if (indented) signalLater(cm, "electricInput", cm, range.head.line);
-    }
-  }
-
-  function copyableRanges(cm) {
-    var text = [], ranges = [];
-    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
-      var line = cm.doc.sel.ranges[i].head.line;
-      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
-      ranges.push(lineRange);
-      text.push(cm.getRange(lineRange.anchor, lineRange.head));
-    }
-    return {text: text, ranges: ranges};
-  }
-
-  function disableBrowserMagic(field) {
-    field.setAttribute("autocorrect", "off");
-    field.setAttribute("autocapitalize", "off");
-    field.setAttribute("spellcheck", "false");
-  }
-
-  // TEXTAREA INPUT STYLE
-
-  function TextareaInput(cm) {
-    this.cm = cm;
-    // See input.poll and input.reset
-    this.prevInput = "";
-
-    // Flag that indicates whether we expect input to appear real soon
-    // now (after some event like 'keypress' or 'input') and are
-    // polling intensively.
-    this.pollingFast = false;
-    // Self-resetting timeout for the poller
-    this.polling = new Delayed();
-    // Tracks when input.reset has punted to just putting a short
-    // string into the textarea instead of the full selection.
-    this.inaccurateSelection = false;
-    // Used to work around IE issue with selection being forgotten when focus moves away from textarea
-    this.hasSelection = false;
-    this.composing = null;
-  };
-
-  function hiddenTextarea() {
-    var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
-    var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
-    // The textarea is kept positioned near the cursor to prevent the
-    // fact that it'll be scrolled into view on input from scrolling
-    // our fake cursor out of view. On webkit, when wrap=off, paste is
-    // very slow. So make the area wide instead.
-    if (webkit) te.style.width = "1000px";
-    else te.setAttribute("wrap", "off");
-    // If border: 0; -- iOS fails to open keyboard (issue #1287)
-    if (ios) te.style.border = "1px solid black";
-    disableBrowserMagic(te);
-    return div;
-  }
-
-  TextareaInput.prototype = copyObj({
-    init: function(display) {
-      var input = this, cm = this.cm;
-
-      // Wraps and hides input textarea
-      var div = this.wrapper = hiddenTextarea();
-      // The semihidden textarea that is focused when the editor is
-      // focused, and receives input.
-      var te = this.textarea = div.firstChild;
-      display.wrapper.insertBefore(div, display.wrapper.firstChild);
-
-      // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
-      if (ios) te.style.width = "0px";
-
-      on(te, "input", function() {
-        if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null;
-        input.poll();
-      });
-
-      on(te, "paste", function(e) {
-        if (handlePaste(e, cm)) return true;
-
-        cm.state.pasteIncoming = true;
-        input.fastPoll();
-      });
-
-      function prepareCopyCut(e) {
-        if (cm.somethingSelected()) {
-          lastCopied = cm.getSelections();
-          if (input.inaccurateSelection) {
-            input.prevInput = "";
-            input.inaccurateSelection = false;
-            te.value = lastCopied.join("\n");
-            selectInput(te);
-          }
-        } else if (!cm.options.lineWiseCopyCut) {
-          return;
-        } else {
-          var ranges = copyableRanges(cm);
-          lastCopied = ranges.text;
-          if (e.type == "cut") {
-            cm.setSelections(ranges.ranges, null, sel_dontScroll);
-          } else {
-            input.prevInput = "";
-            te.value = ranges.text.join("\n");
-            selectInput(te);
-          }
-        }
-        if (e.type == "cut") cm.state.cutIncoming = true;
-      }
-      on(te, "cut", prepareCopyCut);
-      on(te, "copy", prepareCopyCut);
-
-      on(display.scroller, "paste", function(e) {
-        if (eventInWidget(display, e)) return;
-        cm.state.pasteIncoming = true;
-        input.focus();
-      });
-
-      // Prevent normal selection in the editor (we handle our own)
-      on(display.lineSpace, "selectstart", function(e) {
-        if (!eventInWidget(display, e)) e_preventDefault(e);
-      });
-
-      on(te, "compositionstart", function() {
-        var start = cm.getCursor("from");
-        if (input.composing) input.composing.range.clear()
-        input.composing = {
-          start: start,
-          range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
-        };
-      });
-      on(te, "compositionend", function() {
-        if (input.composing) {
-          input.poll();
-          input.composing.range.clear();
-          input.composing = null;
-        }
-      });
-    },
-
-    prepareSelection: function() {
-      // Redraw the selection and/or cursor
-      var cm = this.cm, display = cm.display, doc = cm.doc;
-      var result = prepareSelection(cm);
-
-      // Move the hidden textarea near the cursor to prevent scrolling artifacts
-      if (cm.options.moveInputWithCursor) {
-        var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
-        var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
-        result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
-                                            headPos.top + lineOff.top - wrapOff.top));
-        result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
-                                             headPos.left + lineOff.left - wrapOff.left));
-      }
-
-      return result;
-    },
-
-    showSelection: function(drawn) {
-      var cm = this.cm, display = cm.display;
-      removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
-      removeChildrenAndAdd(display.selectionDiv, drawn.selection);
-      if (drawn.teTop != null) {
-        this.wrapper.style.top = drawn.teTop + "px";
-        this.wrapper.style.left = drawn.teLeft + "px";
-      }
-    },
-
-    // Reset the input to correspond to the selection (or to be empty,
-    // when not typing and nothing is selected)
-    reset: function(typing) {
-      if (this.contextMenuPending) return;
-      var minimal, selected, cm = this.cm, doc = cm.doc;
-      if (cm.somethingSelected()) {
-        this.prevInput = "";
-        var range = doc.sel.primary();
-        minimal = hasCopyEvent &&
-          (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000);
-        var content = minimal ? "-" : selected || cm.getSelection();
-        this.textarea.value = content;
-        if (cm.state.focused) selectInput(this.textarea);
-        if (ie && ie_version >= 9) this.hasSelection = content;
-      } else if (!typing) {
-        this.prevInput = this.textarea.value = "";
-        if (ie && ie_version >= 9) this.hasSelection = null;
-      }
-      this.inaccurateSelection = minimal;
-    },
-
-    getField: function() { return this.textarea; },
-
-    supportsTouch: function() { return false; },
-
-    focus: function() {
-      if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
-        try { this.textarea.focus(); }
-        catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
-      }
-    },
-
-    blur: function() { this.textarea.blur(); },
-
-    resetPosition: function() {
-      this.wrapper.style.top = this.wrapper.style.left = 0;
-    },
-
-    receivedFocus: function() { this.slowPoll(); },
-
-    // Poll for input changes, using the normal rate of polling. This
-    // runs as long as the editor is focused.
-    slowPoll: function() {
-      var input = this;
-      if (input.pollingFast) return;
-      input.polling.set(this.cm.options.pollInterval, function() {
-        input.poll();
-        if (input.cm.state.focused) input.slowPoll();
-      });
-    },
-
-    // When an event has just come in that is likely to add or change
-    // something in the input textarea, we poll faster, to ensure that
-    // the change appears on the screen quickly.
-    fastPoll: function() {
-      var missed = false, input = this;
-      input.pollingFast = true;
-      function p() {
-        var changed = input.poll();
-        if (!changed && !missed) {missed = true; input.polling.set(60, p);}
-        else {input.pollingFast = false; input.slowPoll();}
-      }
-      input.polling.set(20, p);
-    },
-
-    // Read input from the textarea, and update the document to match.
-    // When something is selected, it is present in the textarea, and
-    // selected (unless it is huge, in which case a placeholder is
-    // used). When nothing is selected, the cursor sits after previously
-    // seen text (can be empty), which is stored in prevInput (we must
-    // not reset the textarea when typing, because that breaks IME).
-    poll: function() {
-      var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
-      // Since this is called a *lot*, try to bail out as cheaply as
-      // possible when it is clear that nothing happened. hasSelection
-      // will be the case when there is a lot of text in the textarea,
-      // in which case reading its value would be expensive.
-      if (this.contextMenuPending || !cm.state.focused ||
-          (hasSelection(input) && !prevInput && !this.composing) ||
-          isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq)
-        return false;
-
-      var text = input.value;
-      // If nothing changed, bail.
-      if (text == prevInput && !cm.somethingSelected()) return false;
-      // Work around nonsensical selection resetting in IE9/10, and
-      // inexplicable appearance of private area unicode characters on
-      // some key combos in Mac (#2689).
-      if (ie && ie_version >= 9 && this.hasSelection === text ||
-          mac && /[\uf700-\uf7ff]/.test(text)) {
-        cm.display.input.reset();
-        return false;
-      }
-
-      if (cm.doc.sel == cm.display.selForContextMenu) {
-        var first = text.charCodeAt(0);
-        if (first == 0x200b && !prevInput) prevInput = "\u200b";
-        if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo"); }
-      }
-      // Find the part of the input that is actually new
-      var same = 0, l = Math.min(prevInput.length, text.length);
-      while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
-
-      var self = this;
-      runInOp(cm, function() {
-        applyTextInput(cm, text.slice(same), prevInput.length - same,
-                       null, self.composing ? "*compose" : null);
-
-        // Don't leave long text in the textarea, since it makes further polling slow
-        if (text.length > 1000 || text.indexOf("\n") > -1) input.value = self.prevInput = "";
-        else self.prevInput = text;
-
-        if (self.composing) {
-          self.composing.range.clear();
-          self.composing.range = cm.markText(self.composing.start, cm.getCursor("to"),
-                                             {className: "CodeMirror-composing"});
-        }
-      });
-      return true;
-    },
-
-    ensurePolled: function() {
-      if (this.pollingFast && this.poll()) this.pollingFast = false;
-    },
-
-    onKeyPress: function() {
-      if (ie && ie_version >= 9) this.hasSelection = null;
-      this.fastPoll();
-    },
-
-    onContextMenu: function(e) {
-      var input = this, cm = input.cm, display = cm.display, te = input.textarea;
-      var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
-      if (!pos || presto) return; // Opera is difficult.
-
-      // Reset the current text selection only if the click is done outside of the selection
-      // and 'resetSelectionOnContextMenu' option is true.
-      var reset = cm.options.resetSelectionOnContextMenu;
-      if (reset && cm.doc.sel.contains(pos) == -1)
-        operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);
-
-      var oldCSS = te.style.cssText;
-      input.wrapper.style.position = "absolute";
-      te.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
-        "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
-        (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
-        "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
-      if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712)
-      display.input.focus();
-      if (webkit) window.scrollTo(null, oldScrollY);
-      display.input.reset();
-      // Adds "Select all" to context menu in FF
-      if (!cm.somethingSelected()) te.value = input.prevInput = " ";
-      input.contextMenuPending = true;
-      display.selForContextMenu = cm.doc.sel;
-      clearTimeout(display.detectingSelectAll);
-
-      // Select-all will be greyed out if there's nothing to select, so
-      // this adds a zero-width space so that we can later check whether
-      // it got selected.
-      function prepareSelectAllHack() {
-        if (te.selectionStart != null) {
-          var selected = cm.somethingSelected();
-          var extval = "\u200b" + (selected ? te.value : "");
-          te.value = "\u21da"; // Used to catch context-menu undo
-          te.value = extval;
-          input.prevInput = selected ? "" : "\u200b";
-          te.selectionStart = 1; te.selectionEnd = extval.length;
-          // Re-set this, in case some other handler touched the
-          // selection in the meantime.
-          display.selForContextMenu = cm.doc.sel;
-        }
-      }
-      function rehide() {
-        input.contextMenuPending = false;
-        input.wrapper.style.position = "relative";
-        te.style.cssText = oldCSS;
-        if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);
-
-        // Try to detect the user choosing select-all
-        if (te.selectionStart != null) {
-          if (!ie || (ie && ie_version < 9)) prepareSelectAllHack();
-          var i = 0, poll = function() {
-            if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
-                te.selectionEnd > 0 && input.prevInput == "\u200b")
-              operation(cm, commands.selectAll)(cm);
-            else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);
-            else display.input.reset();
-          };
-          display.detectingSelectAll = setTimeout(poll, 200);
-        }
-      }
-
-      if (ie && ie_version >= 9) prepareSelectAllHack();
-      if (captureRightClick) {
-        e_stop(e);
-        var mouseup = function() {
-          off(window, "mouseup", mouseup);
-          setTimeout(rehide, 20);
-        };
-        on(window, "mouseup", mouseup);
-      } else {
-        setTimeout(rehide, 50);
-      }
-    },
-
-    readOnlyChanged: function(val) {
-      if (!val) this.reset();
-    },
-
-    setUneditable: nothing,
-
-    needsContentAttribute: false
-  }, TextareaInput.prototype);
-
-  // CONTENTEDITABLE INPUT STYLE
-
-  function ContentEditableInput(cm) {
-    this.cm = cm;
-    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
-    this.polling = new Delayed();
-    this.gracePeriod = false;
-  }
-
-  ContentEditableInput.prototype = copyObj({
-    init: function(display) {
-      var input = this, cm = input.cm;
-      var div = input.div = display.lineDiv;
-      disableBrowserMagic(div);
-
-      on(div, "paste", function(e) { handlePaste(e, cm); })
-
-      on(div, "compositionstart", function(e) {
-        var data = e.data;
-        input.composing = {sel: cm.doc.sel, data: data, startData: data};
-        if (!data) return;
-        var prim = cm.doc.sel.primary();
-        var line = cm.getLine(prim.head.line);
-        var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length));
-        if (found > -1 && found <= prim.head.ch)
-          input.composing.sel = simpleSelection(Pos(prim.head.line, found),
-                                                Pos(prim.head.line, found + data.length));
-      });
-      on(div, "compositionupdate", function(e) {
-        input.composing.data = e.data;
-      });
-      on(div, "compositionend", function(e) {
-        var ours = input.composing;
-        if (!ours) return;
-        if (e.data != ours.startData && !/\u200b/.test(e.data))
-          ours.data = e.data;
-        // Need a small delay to prevent other code (input event,
-        // selection polling) from doing damage when fired right after
-        // compositionend.
-        setTimeout(function() {
-          if (!ours.handled)
-            input.applyComposition(ours);
-          if (input.composing == ours)
-            input.composing = null;
-        }, 50);
-      });
-
-      on(div, "touchstart", function() {
-        input.forceCompositionEnd();
-      });
-
-      on(div, "input", function() {
-        if (input.composing) return;
-        if (isReadOnly(cm) || !input.pollContent())
-          runInOp(input.cm, function() {regChange(cm);});
-      });
-
-      function onCopyCut(e) {
-        if (cm.somethingSelected()) {
-          lastCopied = cm.getSelections();
-          if (e.type == "cut") cm.replaceSelection("", null, "cut");
-        } else if (!cm.options.lineWiseCopyCut) {
-          return;
-        } else {
-          var ranges = copyableRanges(cm);
-          lastCopied = ranges.text;
-          if (e.type == "cut") {
-            cm.operation(function() {
-              cm.setSelections(ranges.ranges, 0, sel_dontScroll);
-              cm.replaceSelection("", null, "cut");
-            });
-          }
-        }
-        // iOS exposes the clipboard API, but seems to discard content inserted into it
-        if (e.clipboardData && !ios) {
-          e.preventDefault();
-          e.clipboardData.clearData();
-          e.clipboardData.setData("text/plain", lastCopied.join("\n"));
-        } else {
-          // Old-fashioned briefly-focus-a-textarea hack
-          var kludge = hiddenTextarea(), te = kludge.firstChild;
-          cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
-          te.value = lastCopied.join("\n");
-          var hadFocus = document.activeElement;
-          selectInput(te);
-          setTimeout(function() {
-            cm.display.lineSpace.removeChild(kludge);
-            hadFocus.focus();
-          }, 50);
-        }
-      }
-      on(div, "copy", onCopyCut);
-      on(div, "cut", onCopyCut);
-    },
-
-    prepareSelection: function() {
-      var result = prepareSelection(this.cm, false);
-      result.focus = this.cm.state.focused;
-      return result;
-    },
-
-    showSelection: function(info) {
-      if (!info || !this.cm.display.view.length) return;
-      if (info.focus) this.showPrimarySelection();
-      this.showMultipleSelections(info);
-    },
-
-    showPrimarySelection: function() {
-      var sel = window.getSelection(), prim = this.cm.doc.sel.primary();
-      var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset);
-      var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset);
-      if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
-          cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
-          cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
-        return;
-
-      var start = posToDOM(this.cm, prim.from());
-      var end = posToDOM(this.cm, prim.to());
-      if (!start && !end) return;
-
-      var view = this.cm.display.view;
-      var old = sel.rangeCount && sel.getRangeAt(0);
-      if (!start) {
-        start = {node: view[0].measure.map[2], offset: 0};
-      } else if (!end) { // FIXME dangerously hacky
-        var measure = view[view.length - 1].measure;
-        var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
-        end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
-      }
-
-      try { var rng = range(start.node, start.offset, end.offset, end.node); }
-      catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
-      if (rng) {
-        sel.removeAllRanges();
-        sel.addRange(rng);
-        if (old && sel.anchorNode == null) sel.addRange(old);
-        else if (gecko) this.startGracePeriod();
-      }
-      this.rememberSelection();
-    },
-
-    startGracePeriod: function() {
-      var input = this;
-      clearTimeout(this.gracePeriod);
-      this.gracePeriod = setTimeout(function() {
-        input.gracePeriod = false;
-        if (input.selectionChanged())
-          input.cm.operation(function() { input.cm.curOp.selectionChanged = true; });
-      }, 20);
-    },
-
-    showMultipleSelections: function(info) {
-      removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
-      removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
-    },
-
-    rememberSelection: function() {
-      var sel = window.getSelection();
-      this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
-      this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
-    },
-
-    selectionInEditor: function() {
-      var sel = window.getSelection();
-      if (!sel.rangeCount) return false;
-      var node = sel.getRangeAt(0).commonAncestorContainer;
-      return contains(this.div, node);
-    },
-
-    focus: function() {
-      if (this.cm.options.readOnly != "nocursor") this.div.focus();
-    },
-    blur: function() { this.div.blur(); },
-    getField: function() { return this.div; },
-
-    supportsTouch: function() { return true; },
-
-    receivedFocus: function() {
-      var input = this;
-      if (this.selectionInEditor())
-        this.pollSelection();
-      else
-        runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; });
-
-      function poll() {
-        if (input.cm.state.focused) {
-          input.pollSelection();
-          input.polling.set(input.cm.options.pollInterval, poll);
-        }
-      }
-      this.polling.set(this.cm.options.pollInterval, poll);
-    },
-
-    selectionChanged: function() {
-      var sel = window.getSelection();
-      return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
-        sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset;
-    },
-
-    pollSelection: function() {
-      if (!this.composing && !this.gracePeriod && this.selectionChanged()) {
-        var sel = window.getSelection(), cm = this.cm;
-        this.rememberSelection();
-        var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
-        var head = domToPos(cm, sel.focusNode, sel.focusOffset);
-        if (anchor && head) runInOp(cm, function() {
-          setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
-          if (anchor.bad || head.bad) cm.curOp.selectionChanged = true;
-        });
-      }
-    },
-
-    pollContent: function() {
-      var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
-      var from = sel.from(), to = sel.to();
-      if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false;
-
-      var fromIndex;
-      if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
-        var fromLine = lineNo(display.view[0].line);
-        var fromNode = display.view[0].node;
-      } else {
-        var fromLine = lineNo(display.view[fromIndex].line);
-        var fromNode = display.view[fromIndex - 1].node.nextSibling;
-      }
-      var toIndex = findViewIndex(cm, to.line);
-      if (toIndex == display.view.length - 1) {
-        var toLine = display.viewTo - 1;
-        var toNode = display.lineDiv.lastChild;
-      } else {
-        var toLine = lineNo(display.view[toIndex + 1].line) - 1;
-        var toNode = display.view[toIndex + 1].node.previousSibling;
-      }
-
-      var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
-      var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
-      while (newText.length > 1 && oldText.length > 1) {
-        if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
-        else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
-        else break;
-      }
-
-      var cutFront = 0, cutEnd = 0;
-      var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
-      while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
-        ++cutFront;
-      var newBot = lst(newText), oldBot = lst(oldText);
-      var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
-                               oldBot.length - (oldText.length == 1 ? cutFront : 0));
-      while (cutEnd < maxCutEnd &&
-             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
-        ++cutEnd;
-
-      newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd);
-      newText[0] = newText[0].slice(cutFront);
-
-      var chFrom = Pos(fromLine, cutFront);
-      var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
-      if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
-        replaceRange(cm.doc, newText, chFrom, chTo, "+input");
-        return true;
-      }
-    },
-
-    ensurePolled: function() {
-      this.forceCompositionEnd();
-    },
-    reset: function() {
-      this.forceCompositionEnd();
-    },
-    forceCompositionEnd: function() {
-      if (!this.composing || this.composing.handled) return;
-      this.applyComposition(this.composing);
-      this.composing.handled = true;
-      this.div.blur();
-      this.div.focus();
-    },
-    applyComposition: function(composing) {
-      if (isReadOnly(this.cm))
-        operation(this.cm, regChange)(this.cm)
-      else if (composing.data && composing.data != composing.startData)
-        operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);
-    },
-
-    setUneditable: function(node) {
-      node.contentEditable = "false"
-    },
-
-    onKeyPress: function(e) {
-      e.preventDefault();
-      if (!isReadOnly(this.cm))
-        operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
-    },
-
-    readOnlyChanged: function(val) {
-      this.div.contentEditable = String(val != "nocursor")
-    },
-
-    onContextMenu: nothing,
-    resetPosition: nothing,
-
-    needsContentAttribute: true
-  }, ContentEditableInput.prototype);
-
-  function posToDOM(cm, pos) {
-    var view = findViewForLine(cm, pos.line);
-    if (!view || view.hidden) return null;
-    var line = getLine(cm.doc, pos.line);
-    var info = mapFromLineView(view, line, pos.line);
-
-    var order = getOrder(line), side = "left";
-    if (order) {
-      var partPos = getBidiPartAt(order, pos.ch);
-      side = partPos % 2 ? "right" : "left";
-    }
-    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
-    result.offset = result.collapse == "right" ? result.end : result.start;
-    return result;
-  }
-
-  function badPos(pos, bad) { if (bad) pos.bad = true; return pos; }
-
-  function domToPos(cm, node, offset) {
-    var lineNode;
-    if (node == cm.display.lineDiv) {
-      lineNode = cm.display.lineDiv.childNodes[offset];
-      if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true);
-      node = null; offset = 0;
-    } else {
-      for (lineNode = node;; lineNode = lineNode.parentNode) {
-        if (!lineNode || lineNode == cm.display.lineDiv) return null;
-        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break;
-      }
-    }
-    for (var i = 0; i < cm.display.view.length; i++) {
-      var lineView = cm.display.view[i];
-      if (lineView.node == lineNode)
-        return locateNodeInLineView(lineView, node, offset);
-    }
-  }
-
-  function locateNodeInLineView(lineView, node, offset) {
-    var wrapper = lineView.text.firstChild, bad = false;
-    if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true);
-    if (node == wrapper) {
-      bad = true;
-      node = wrapper.childNodes[offset];
-      offset = 0;
-      if (!node) {
-        var line = lineView.rest ? lst(lineView.rest) : lineView.line;
-        return badPos(Pos(lineNo(line), line.text.length), bad);
-      }
-    }
-
-    var textNode = node.nodeType == 3 ? node : null, topNode = node;
-    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
-      textNode = node.firstChild;
-      if (offset) offset = textNode.nodeValue.length;
-    }
-    while (topNode.parentNode != wrapper) topNode = topNode.parentNode;
-    var measure = lineView.measure, maps = measure.maps;
-
-    function find(textNode, topNode, offset) {
-      for (var i = -1; i < (maps ? maps.length : 0); i++) {
-        var map = i < 0 ? measure.map : maps[i];
-        for (var j = 0; j < map.length; j += 3) {
-          var curNode = map[j + 2];
-          if (curNode == textNode || curNode == topNode) {
-            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
-            var ch = map[j] + offset;
-            if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)];
-            return Pos(line, ch);
-          }
-        }
-      }
-    }
-    var found = find(textNode, topNode, offset);
-    if (found) return badPos(found, bad);
-
-    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
-    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
-      found = find(after, after.firstChild, 0);
-      if (found)
-        return badPos(Pos(found.line, found.ch - dist), bad);
-      else
-        dist += after.textContent.length;
-    }
-    for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {
-      found = find(before, before.firstChild, -1);
-      if (found)
-        return badPos(Pos(found.line, found.ch + dist), bad);
-      else
-        dist += after.textContent.length;
-    }
-  }
-
-  function domTextBetween(cm, from, to, fromLine, toLine) {
-    var text = "", closing = false, lineSep = cm.doc.lineSeparator();
-    function recognizeMarker(id) { return function(marker) { return marker.id == id; }; }
-    function walk(node) {
-      if (node.nodeType == 1) {
-        var cmText = node.getAttribute("cm-text");
-        if (cmText != null) {
-          if (cmText == "") cmText = node.textContent.replace(/\u200b/g, "");
-          text += cmText;
-          return;
-        }
-        var markerID = node.getAttribute("cm-marker"), range;
-        if (markerID) {
-          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
-          if (found.length && (range = found[0].find()))
-            text += getBetween(cm.doc, range.from, range.to).join(lineSep);
-          return;
-        }
-        if (node.getAttribute("contenteditable") == "false") return;
-        for (var i = 0; i < node.childNodes.length; i++)
-          walk(node.childNodes[i]);
-        if (/^(pre|div|p)$/i.test(node.nodeName))
-          closing = true;
-      } else if (node.nodeType == 3) {
-        var val = node.nodeValue;
-        if (!val) return;
-        if (closing) {
-          text += lineSep;
-          closing = false;
-        }
-        text += val;
-      }
-    }
-    for (;;) {
-      walk(from);
-      if (from == to) break;
-      from = from.nextSibling;
-    }
-    return text;
-  }
-
-  CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};
-
-  // SELECTION / CURSOR
-
-  // Selection objects are immutable. A new one is created every time
-  // the selection changes. A selection is one or more non-overlapping
-  // (and non-touching) ranges, sorted, and an integer that indicates
-  // which one is the primary selection (the one that's scrolled into
-  // view, that getCursor returns, etc).
-  function Selection(ranges, primIndex) {
-    this.ranges = ranges;
-    this.primIndex = primIndex;
-  }
-
-  Selection.prototype = {
-    primary: function() { return this.ranges[this.primIndex]; },
-    equals: function(other) {
-      if (other == this) return true;
-      if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
-      for (var i = 0; i < this.ranges.length; i++) {
-        var here = this.ranges[i], there = other.ranges[i];
-        if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
-      }
-      return true;
-    },
-    deepCopy: function() {
-      for (var out = [], i = 0; i < this.ranges.length; i++)
-        out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
-      return new Selection(out, this.primIndex);
-    },
-    somethingSelected: function() {
-      for (var i = 0; i < this.ranges.length; i++)
-        if (!this.ranges[i].empty()) return true;
-      return false;
-    },
-    contains: function(pos, end) {
-      if (!end) end = pos;
-      for (var i = 0; i < this.ranges.length; i++) {
-        var range = this.ranges[i];
-        if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
-          return i;
-      }
-      return -1;
-    }
-  };
-
-  function Range(anchor, head) {
-    this.anchor = anchor; this.head = head;
-  }
-
-  Range.prototype = {
-    from: function() { return minPos(this.anchor, this.head); },
-    to: function() { return maxPos(this.anchor, this.head); },
-    empty: function() {
-      return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
-    }
-  };
-
-  // Take an unsorted, potentially overlapping set of ranges, and
-  // build a selection out of it. 'Consumes' ranges array (modifying
-  // it).
-  function normalizeSelection(ranges, primIndex) {
-    var prim = ranges[primIndex];
-    ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
-    primIndex = indexOf(ranges, prim);
-    for (var i = 1; i < ranges.length; i++) {
-      var cur = ranges[i], prev = ranges[i - 1];
-      if (cmp(prev.to(), cur.from()) >= 0) {
-        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
-        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
-        if (i <= primIndex) --primIndex;
-        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
-      }
-    }
-    return new Selection(ranges, primIndex);
-  }
-
-  function simpleSelection(anchor, head) {
-    return new Selection([new Range(anchor, head || anchor)], 0);
-  }
-
-  // Most of the external API clips given positions to make sure they
-  // actually exist within the document.
-  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
-  function clipPos(doc, pos) {
-    if (pos.line < doc.first) return Pos(doc.first, 0);
-    var last = doc.first + doc.size - 1;
-    if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
-    return clipToLen(pos, getLine(doc, pos.line).text.length);
-  }
-  function clipToLen(pos, linelen) {
-    var ch = pos.ch;
-    if (ch == null || ch > linelen) return Pos(pos.line, linelen);
-    else if (ch < 0) return Pos(pos.line, 0);
-    else return pos;
-  }
-  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
-  function clipPosArray(doc, array) {
-    for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
-    return out;
-  }
-
-  // SELECTION UPDATES
-
-  // The 'scroll' parameter given to many of these indicated whether
-  // the new cursor position should be scrolled into view after
-  // modifying the selection.
-
-  // If shift is held or the extend flag is set, extends a range to
-  // include a given position (and optionally a second position).
-  // Otherwise, simply returns the range between the given positions.
-  // Used for cursor motion and such.
-  function extendRange(doc, range, head, other) {
-    if (doc.cm && doc.cm.display.shift || doc.extend) {
-      var anchor = range.anchor;
-      if (other) {
-        var posBefore = cmp(head, anchor) < 0;
-        if (posBefore != (cmp(other, anchor) < 0)) {
-          anchor = head;
-          head = other;
-        } else if (posBefore != (cmp(head, other) < 0)) {
-          head = other;
-        }
-      }
-      return new Range(anchor, head);
-    } else {
-      return new Range(other || head, head);
-    }
-  }
-
-  // Extend the primary selection range, discard the rest.
-  function extendSelection(doc, head, other, options) {
-    setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
-  }
-
-  // Extend all selections (pos is an array of selections with length
-  // equal the number of selections)
-  function extendSelections(doc, heads, options) {
-    for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
-      out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
-    var newSel = normalizeSelection(out, doc.sel.primIndex);
-    setSelection(doc, newSel, options);
-  }
-
-  // Updates a single range in the selection.
-  function replaceOneSelection(doc, i, range, options) {
-    var ranges = doc.sel.ranges.slice(0);
-    ranges[i] = range;
-    setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
-  }
-
-  // Reset the selection to a single range.
-  function setSimpleSelection(doc, anchor, head, options) {
-    setSelection(doc, simpleSelection(anchor, head), options);
-  }
-
-  // Give beforeSelectionChange handlers a change to influence a
-  // selection update.
-  function filterSelectionChange(doc, sel) {
-    var obj = {
-      ranges: sel.ranges,
-      update: function(ranges) {
-        this.ranges = [];
-        for (var i = 0; i < ranges.length; i++)
-          this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
-                                     clipPos(doc, ranges[i].head));
-      }
-    };
-    signal(doc, "beforeSelectionChange", doc, obj);
-    if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
-    if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
-    else return sel;
-  }
-
-  function setSelectionReplaceHistory(doc, sel, options) {
-    var done = doc.history.done, last = lst(done);
-    if (last && last.ranges) {
-      done[done.length - 1] = sel;
-      setSelectionNoUndo(doc, sel, options);
-    } else {
-      setSelection(doc, sel, options);
-    }
-  }
-
-  // Set a new selection.
-  function setSelection(doc, sel, options) {
-    setSelectionNoUndo(doc, sel, options);
-    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
-  }
-
-  function setSelectionNoUndo(doc, sel, options) {
-    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
-      sel = filterSelectionChange(doc, sel);
-
-    var bias = options && options.bias ||
-      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
-    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
-
-    if (!(options && options.scroll === false) && doc.cm)
-      ensureCursorVisible(doc.cm);
-  }
-
-  function setSelectionInner(doc, sel) {
-    if (sel.equals(doc.sel)) return;
-
-    doc.sel = sel;
-
-    if (doc.cm) {
-      doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;
-      signalCursorActivity(doc.cm);
-    }
-    signalLater(doc, "cursorActivity", doc);
-  }
-
-  // Verify that the selection does not partially select any atomic
-  // marked ranges.
-  function reCheckSelection(doc) {
-    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
-  }
-
-  // Return a selection that does not partially select any atomic
-  // ranges.
-  function skipAtomicInSelection(doc, sel, bias, mayClear) {
-    var out;
-    for (var i = 0; i < sel.ranges.length; i++) {
-      var range = sel.ranges[i];
-      var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
-      var newHead = skipAtomic(doc, range.head, bias, mayClear);
-      if (out || newAnchor != range.anchor || newHead != range.head) {
-        if (!out) out = sel.ranges.slice(0, i);
-        out[i] = new Range(newAnchor, newHead);
-      }
-    }
-    return out ? normalizeSelection(out, sel.primIndex) : sel;
-  }
-
-  // Ensure a given position is not inside an atomic range.
-  function skipAtomic(doc, pos, bias, mayClear) {
-    var flipped = false, curPos = pos;
-    var dir = bias || 1;
-    doc.cantEdit = false;
-    search: for (;;) {
-      var line = getLine(doc, curPos.line);
-      if (line.markedSpans) {
-        for (var i = 0; i < line.markedSpans.length; ++i) {
-          var sp = line.markedSpans[i], m = sp.marker;
-          if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
-              (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
-            if (mayClear) {
-              signal(m, "beforeCursorEnter");
-              if (m.explicitlyCleared) {
-                if (!line.markedSpans) break;
-                else {--i; continue;}
-              }
-            }
-            if (!m.atomic) continue;
-            var newPos = m.find(dir < 0 ? -1 : 1);
-            if (cmp(newPos, curPos) == 0) {
-              newPos.ch += dir;
-              if (newPos.ch < 0) {
-                if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
-                else newPos = null;
-              } else if (newPos.ch > line.text.length) {
-                if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
-                else newPos = null;
-              }
-              if (!newPos) {
-                if (flipped) {
-                  // Driven in a corner -- no valid cursor position found at all
-                  // -- try again *with* clearing, if we didn't already
-                  if (!mayClear) return skipAtomic(doc, pos, bias, true);
-                  // Otherwise, turn off editing until further notice, and return the start of the doc
-                  doc.cantEdit = true;
-                  return Pos(doc.first, 0);
-                }
-                flipped = true; newPos = pos; dir = -dir;
-              }
-            }
-            curPos = newPos;
-            continue search;
-          }
-        }
-      }
-      return curPos;
-    }
-  }
-
-  // SELECTION DRAWING
-
-  function updateSelection(cm) {
-    cm.display.input.showSelection(cm.display.input.prepareSelection());
-  }
-
-  function prepareSelection(cm, primary) {
-    var doc = cm.doc, result = {};
-    var curFragment = result.cursors = document.createDocumentFragment();
-    var selFragment = result.selection = document.createDocumentFragment();
-
-    for (var i = 0; i < doc.sel.ranges.length; i++) {
-      if (primary === false && i == doc.sel.primIndex) continue;
-      var range = doc.sel.ranges[i];
-      var collapsed = range.empty();
-      if (collapsed || cm.options.showCursorWhenSelecting)
-        drawSelectionCursor(cm, range.head, curFragment);
-      if (!collapsed)
-        drawSelectionRange(cm, range, selFragment);
-    }
-    return result;
-  }
-
-  // Draws a cursor for the given range
-  function drawSelectionCursor(cm, head, output) {
-    var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine);
-
-    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
-    cursor.style.left = pos.left + "px";
-    cursor.style.top = pos.top + "px";
-    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
-
-    if (pos.other) {
-      // Secondary cursor, shown when on a 'jump' in bi-directional text
-      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
-      otherCursor.style.display = "";
-      otherCursor.style.left = pos.other.left + "px";
-      otherCursor.style.top = pos.other.top + "px";
-      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
-    }
-  }
-
-  // Draws the given range as a highlighted selection
-  function drawSelectionRange(cm, range, output) {
-    var display = cm.display, doc = cm.doc;
-    var fragment = document.createDocumentFragment();
-    var padding = paddingH(cm.display), leftSide = padding.left;
-    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;
-
-    function add(left, top, width, bottom) {
-      if (top < 0) top = 0;
-      top = Math.round(top);
-      bottom = Math.round(bottom);
-      fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
-                               "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
-                               "px; height: " + (bottom - top) + "px"));
-    }
-
-    function drawForLine(line, fromArg, toArg) {
-      var lineObj = getLine(doc, line);
-      var lineLen = lineObj.text.length;
-      var start, end;
-      function coords(ch, bias) {
-        return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
-      }
-
-      iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
-        var leftPos = coords(from, "left"), rightPos, left, right;
-        if (from == to) {
-          rightPos = leftPos;
-          left = right = leftPos.left;
-        } else {
-          rightPos = coords(to - 1, "right");
-          if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
-          left = leftPos.left;
-          right = rightPos.right;
-        }
-        if (fromArg == null && from == 0) left = leftSide;
-        if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
-          add(left, leftPos.top, null, leftPos.bottom);
-          left = leftSide;
-          if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
-        }
-        if (toArg == null && to == lineLen) right = rightSide;
-        if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
-          start = leftPos;
-        if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
-          end = rightPos;
-        if (left < leftSide + 1) left = leftSide;
-        add(left, rightPos.top, right - left, rightPos.bottom);
-      });
-      return {start: start, end: end};
-    }
-
-    var sFrom = range.from(), sTo = range.to();
-    if (sFrom.line == sTo.line) {
-      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
-    } else {
-      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
-      var singleVLine = visualLine(fromLine) == visualLine(toLine);
-      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
-      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
-      if (singleVLine) {
-        if (leftEnd.top < rightStart.top - 2) {
-          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
-          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
-        } else {
-          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
-        }
-      }
-      if (leftEnd.bottom < rightStart.top)
-        add(leftSide, leftEnd.bottom, null, rightStart.top);
-    }
-
-    output.appendChild(fragment);
-  }
-
-  // Cursor-blinking
-  function restartBlink(cm) {
-    if (!cm.state.focused) return;
-    var display = cm.display;
-    clearInterval(display.blinker);
-    var on = true;
-    display.cursorDiv.style.visibility = "";
-    if (cm.options.cursorBlinkRate > 0)
-      display.blinker = setInterval(function() {
-        display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
-      }, cm.options.cursorBlinkRate);
-    else if (cm.options.cursorBlinkRate < 0)
-      display.cursorDiv.style.visibility = "hidden";
-  }
-
-  // HIGHLIGHT WORKER
-
-  function startWorker(cm, time) {
-    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
-      cm.state.highlight.set(time, bind(highlightWorker, cm));
-  }
-
-  function highlightWorker(cm) {
-    var doc = cm.doc;
-    if (doc.frontier < doc.first) doc.frontier = doc.first;
-    if (doc.frontier >= cm.display.viewTo) return;
-    var end = +new Date + cm.options.workTime;
-    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
-    var changedLines = [];
-
-    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
-      if (doc.frontier >= cm.display.viewFrom) { // Visible
-        var oldStyles = line.styles, tooLong = line.text.length > cm.options.maxHighlightLength;
-        var highlighted = highlightLine(cm, line, tooLong ? copyState(doc.mode, state) : state, true);
-        line.styles = highlighted.styles;
-        var oldCls = line.styleClasses, newCls = highlighted.classes;
-        if (newCls) line.styleClasses = newCls;
-        else if (oldCls) line.styleClasses = null;
-        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
-          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
-        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
-        if (ischange) changedLines.push(doc.frontier);
-        line.stateAfter = tooLong ? state : copyState(doc.mode, state);
-      } else {
-        if (line.text.length <= cm.options.maxHighlightLength)
-          processLine(cm, line.text, state);
-        line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
-      }
-      ++doc.frontier;
-      if (+new Date > end) {
-        startWorker(cm, cm.options.workDelay);
-        return true;
-      }
-    });
-    if (changedLines.length) runInOp(cm, function() {
-      for (var i = 0; i < changedLines.length; i++)
-        regLineChange(cm, changedLines[i], "text");
-    });
-  }
-
-  // Finds the line to start with when starting a parse. Tries to
-  // find a line with a stateAfter, so that it can start with a
-  // valid state. If that fails, it returns the line with the
-  // smallest indentation, which tends to need the least context to
-  // parse correctly.
-  function findStartLine(cm, n, precise) {
-    var minindent, minline, doc = cm.doc;
-    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
-    for (var search = n; search > lim; --search) {
-      if (search <= doc.first) return doc.first;
-      var line = getLine(doc, search - 1);
-      if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
-      var indented = countColumn(line.text, null, cm.options.tabSize);
-      if (minline == null || minindent > indented) {
-        minline = search - 1;
-        minindent = indented;
-      }
-    }
-    return minline;
-  }
-
-  function getStateBefore(cm, n, precise) {
-    var doc = cm.doc, display = cm.display;
-    if (!doc.mode.startState) return true;
-    var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
-    if (!state) state = startState(doc.mode);
-    else state = copyState(doc.mode, state);
-    doc.iter(pos, n, function(line) {
-      processLine(cm, line.text, state);
-      var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
-      line.stateAfter = save ? copyState(doc.mode, state) : null;
-      ++pos;
-    });
-    if (precise) doc.frontier = pos;
-    return state;
-  }
-
-  // POSITION MEASUREMENT
-
-  function paddingTop(display) {return display.lineSpace.offsetTop;}
-  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
-  function paddingH(display) {
-    if (display.cachedPaddingH) return display.cachedPaddingH;
-    var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
-    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
-    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
-    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
-    return data;
-  }
-
-  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; }
-  function displayWidth(cm) {
-    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth;
-  }
-  function displayHeight(cm) {
-    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight;
-  }
-
-  // Ensure the lineView.wrapping.heights array is populated. This is
-  // an array of bottom offsets for the lines that make up a drawn
-  // line. When lineWrapping is on, there might be more than one
-  // height.
-  function ensureLineHeights(cm, lineView, rect) {
-    var wrapping = cm.options.lineWrapping;
-    var curWidth = wrapping && displayWidth(cm);
-    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
-      var heights = lineView.measure.heights = [];
-      if (wrapping) {
-        lineView.measure.width = curWidth;
-        var rects = lineView.text.firstChild.getClientRects();
-        for (var i = 0; i < rects.length - 1; i++) {
-          var cur = rects[i], next = rects[i + 1];
-          if (Math.abs(cur.bottom - next.bottom) > 2)
-            heights.push((cur.bottom + next.top) / 2 - rect.top);
-        }
-      }
-      heights.push(rect.bottom - rect.top);
-    }
-  }
-
-  // Find a line map (mapping character offsets to text nodes) and a
-  // measurement cache for the given line number. (A line view might
-  // contain multiple lines when collapsed ranges are present.)
-  function mapFromLineView(lineView, line, lineN) {
-    if (lineView.line == line)
-      return {map: lineView.measure.map, cache: lineView.measure.cache};
-    for (var i = 0; i < lineView.rest.length; i++)
-      if (lineView.rest[i] == line)
-        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
-    for (var i = 0; i < lineView.rest.length; i++)
-      if (lineNo(lineView.rest[i]) > lineN)
-        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
-  }
-
-  // Render a line into the hidden node display.externalMeasured. Used
-  // when measurement is needed for a line that's not in the viewport.
-  function updateExternalMeasurement(cm, line) {
-    line = visualLine(line);
-    var lineN = lineNo(line);
-    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
-    view.lineN = lineN;
-    var built = view.built = buildLineContent(cm, view);
-    view.text = built.pre;
-    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
-    return view;
-  }
-
-  // Get a {top, bottom, left, right} box (in line-local coordinates)
-  // for a given character.
-  function measureChar(cm, line, ch, bias) {
-    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
-  }
-
-  // Find a line view that corresponds to the given line number.
-  function findViewForLine(cm, lineN) {
-    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
-      return cm.display.view[findViewIndex(cm, lineN)];
-    var ext = cm.display.externalMeasured;
-    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
-      return ext;
-  }
-
-  // Measurement can be split in two steps, the set-up work that
-  // applies to the whole line, and the measurement of the actual
-  // character. Functions like coordsChar, that need to do a lot of
-  // measurements in a row, can thus ensure that the set-up work is
-  // only done once.
-  function prepareMeasureForLine(cm, line) {
-    var lineN = lineNo(line);
-    var view = findViewForLine(cm, lineN);
-    if (view && !view.text) {
-      view = null;
-    } else if (view && view.changes) {
-      updateLineForChanges(cm, view, lineN, getDimensions(cm));
-      cm.curOp.forceUpdate = true;
-    }
-    if (!view)
-      view = updateExternalMeasurement(cm, line);
-
-    var info = mapFromLineView(view, line, lineN);
-    return {
-      line: line, view: view, rect: null,
-      map: info.map, cache: info.cache, before: info.before,
-      hasHeights: false
-    };
-  }
-
-  // Given a prepared measurement object, measures the position of an
-  // actual character (or fetches it from the cache).
-  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
-    if (prepared.before) ch = -1;
-    var key = ch + (bias || ""), found;
-    if (prepared.cache.hasOwnProperty(key)) {
-      found = prepared.cache[key];
-    } else {
-      if (!prepared.rect)
-        prepared.rect = prepared.view.text.getBoundingClientRect();
-      if (!prepared.hasHeights) {
-        ensureLineHeights(cm, prepared.view, prepared.rect);
-        prepared.hasHeights = true;
-      }
-      found = measureCharInner(cm, prepared, ch, bias);
-      if (!found.bogus) prepared.cache[key] = found;
-    }
-    return {left: found.left, right: found.right,
-            top: varHeight ? found.rtop : found.top,
-            bottom: varHeight ? found.rbottom : found.bottom};
-  }
-
-  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
-
-  function nodeAndOffsetInLineMap(map, ch, bias) {
-    var node, start, end, collapse;
-    // First, search the line map for the text node corresponding to,
-    // or closest to, the target character.
-    for (var i = 0; i < map.length; i += 3) {
-      var mStart = map[i], mEnd = map[i + 1];
-      if (ch < mStart) {
-        start = 0; end = 1;
-        collapse = "left";
-      } else if (ch < mEnd) {
-        start = ch - mStart;
-        end = start + 1;
-      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
-        end = mEnd - mStart;
-        start = end - 1;
-        if (ch >= mEnd) collapse = "right";
-      }
-      if (start != null) {
-        node = map[i + 2];
-        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
-          collapse = bias;
-        if (bias == "left" && start == 0)
-          while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
-            node = map[(i -= 3) + 2];
-            collapse = "left";
-          }
-        if (bias == "right" && start == mEnd - mStart)
-          while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
-            node = map[(i += 3) + 2];
-            collapse = "right";
-          }
-        break;
-      }
-    }
-    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd};
-  }
-
-  function measureCharInner(cm, prepared, ch, bias) {
-    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
-    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;
-
-    var rect;
-    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
-      for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned
-        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start;
-        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end;
-        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {
-          rect = node.parentNode.getBoundingClientRect();
-        } else if (ie && cm.options.lineWrapping) {
-          var rects = range(node, start, end).getClientRects();
-          if (rects.length)
-            rect = rects[bias == "right" ? rects.length - 1 : 0];
-          else
-            rect = nullRect;
-        } else {
-          rect = range(node, start, end).getBoundingClientRect() || nullRect;
-        }
-        if (rect.left || rect.right || start == 0) break;
-        end = start;
-        start = start - 1;
-        collapse = "right";
-      }
-      if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect);
-    } else { // If it is a widget, simply get the box for the whole widget.
-      if (start > 0) collapse = bias = "right";
-      var rects;
-      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
-        rect = rects[bias == "right" ? rects.length - 1 : 0];
-      else
-        rect = node.getBoundingClientRect();
-    }
-    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
-      var rSpan = node.parentNode.getClientRects()[0];
-      if (rSpan)
-        rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
-      else
-        rect = nullRect;
-    }
-
-    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
-    var mid = (rtop + rbot) / 2;
-    var heights = prepared.view.measure.heights;
-    for (var i = 0; i < heights.length - 1; i++)
-      if (mid < heights[i]) break;
-    var top = i ? heights[i - 1] : 0, bot = heights[i];
-    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
-                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
-                  top: top, bottom: bot};
-    if (!rect.left && !rect.right) result.bogus = true;
-    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }
-
-    return result;
-  }
-
-  // Work around problem with bounding client rects on ranges being
-  // returned incorrectly when zoomed on IE10 and below.
-  function maybeUpdateRectForZooming(measure, rect) {
-    if (!window.screen || screen.logicalXDPI == null ||
-        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
-      return rect;
-    var scaleX = screen.logicalXDPI / screen.deviceXDPI;
-    var scaleY = screen.logicalYDPI / screen.deviceYDPI;
-    return {left: rect.left * scaleX, right: rect.right * scaleX,
-            top: rect.top * scaleY, bottom: rect.bottom * scaleY};
-  }
-
-  function clearLineMeasurementCacheFor(lineView) {
-    if (lineView.measure) {
-      lineView.measure.cache = {};
-      lineView.measure.heights = null;
-      if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
-        lineView.measure.caches[i] = {};
-    }
-  }
-
-  function clearLineMeasurementCache(cm) {
-    cm.display.externalMeasure = null;
-    removeChildren(cm.display.lineMeasure);
-    for (var i = 0; i < cm.display.view.length; i++)
-      clearLineMeasurementCacheFor(cm.display.view[i]);
-  }
-
-  function clearCaches(cm) {
-    clearLineMeasurementCache(cm);
-    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
-    if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
-    cm.display.lineNumChars = null;
-  }
-
-  function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
-  function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }
-
-  // Converts a {top, bottom, left, right} box from line-local
-  // coordinates into another coordinate system. Context may be one of
-  // "line", "div" (display.lineDiv), "local"/null (editor), "window",
-  // or "page".
-  function intoCoordSystem(cm, lineObj, rect, context) {
-    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
-      var size = widgetHeight(lineObj.widgets[i]);
-      rect.top += size; rect.bottom += size;
-    }
-    if (context == "line") return rect;
-    if (!context) context = "local";
-    var yOff = heightAtLine(lineObj);
-    if (context == "local") yOff += paddingTop(cm.display);
-    else yOff -= cm.display.viewOffset;
-    if (context == "page" || context == "window") {
-      var lOff = cm.display.lineSpace.getBoundingClientRect();
-      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
-      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
-      rect.left += xOff; rect.right += xOff;
-    }
-    rect.top += yOff; rect.bottom += yOff;
-    return rect;
-  }
-
-  // Coverts a box from "div" coords to another coordinate system.
-  // Context may be "window", "page", "div", or "local"/null.
-  function fromCoordSystem(cm, coords, context) {
-    if (context == "div") return coords;
-    var left = coords.left, top = coords.top;
-    // First move into "page" coordinate system
-    if (context == "page") {
-      left -= pageScrollX();
-      top -= pageScrollY();
-    } else if (context == "local" || !context) {
-      var localBox = cm.display.sizer.getBoundingClientRect();
-      left += localBox.left;
-      top += localBox.top;
-    }
-
-    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
-    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
-  }
-
-  function charCoords(cm, pos, context, lineObj, bias) {
-    if (!lineObj) lineObj = getLine(cm.doc, pos.line);
-    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
-  }
-
-  // Returns a box for a given cursor position, which may have an
-  // 'other' property containing the position of the secondary cursor
-  // on a bidi boundary.
-  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
-    lineObj = lineObj || getLine(cm.doc, pos.line);
-    if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
-    function get(ch, right) {
-      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
-      if (right) m.left = m.right; else m.right = m.left;
-      return intoCoordSystem(cm, lineObj, m, context);
-    }
-    function getBidi(ch, partPos) {
-      var part = order[partPos], right = part.level % 2;
-      if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
-        part = order[--partPos];
-        ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
-        right = true;
-      } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
-        part = order[++partPos];
-        ch = bidiLeft(part) - part.level % 2;
-        right = false;
-      }
-      if (right && ch == part.to && ch > part.from) return get(ch - 1);
-      return get(ch, right);
-    }
-    var order = getOrder(lineObj), ch = pos.ch;
-    if (!order) return get(ch);
-    var partPos = getBidiPartAt(order, ch);
-    var val = getBidi(ch, partPos);
-    if (bidiOther != null) val.other = getBidi(ch, bidiOther);
-    return val;
-  }
-
-  // Used to cheaply estimate the coordinates for a position. Used for
-  // intermediate scroll updates.
-  function estimateCoords(cm, pos) {
-    var left = 0, pos = clipPos(cm.doc, pos);
-    if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
-    var lineObj = getLine(cm.doc, pos.line);
-    var top = heightAtLine(lineObj) + paddingTop(cm.display);
-    return {left: left, right: left, top: top, bottom: top + lineObj.height};
-  }
-
-  // Positions returned by coordsChar contain some extra information.
-  // xRel is the relative x position of the input coordinates compared
-  // to the found position (so xRel > 0 means the coordinates are to
-  // the right of the character position, for example). When outside
-  // is true, that means the coordinates lie outside the line's
-  // vertical range.
-  function PosWithInfo(line, ch, outside, xRel) {
-    var pos = Pos(line, ch);
-    pos.xRel = xRel;
-    if (outside) pos.outside = true;
-    return pos;
-  }
-
-  // Compute the character position closest to the given coordinates.
-  // Input must be lineSpace-local ("div" coordinate system).
-  function coordsChar(cm, x, y) {
-    var doc = cm.doc;
-    y += cm.display.viewOffset;
-    if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
-    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
-    if (lineN > last)
-      return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
-    if (x < 0) x = 0;
-
-    var lineObj = getLine(doc, lineN);
-    for (;;) {
-      var found = coordsCharInner(cm, lineObj, lineN, x, y);
-      var merged = collapsedSpanAtEnd(lineObj);
-      var mergedPos = merged && merged.find(0, true);
-      if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
-        lineN = lineNo(lineObj = mergedPos.to.line);
-      else
-        return found;
-    }
-  }
-
-  function coordsCharInner(cm, lineObj, lineNo, x, y) {
-    var innerOff = y - heightAtLine(lineObj);
-    var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
-    var preparedMeasure = prepareMeasureForLine(cm, lineObj);
-
-    function getX(ch) {
-      var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
-      wrongLine = true;
-      if (innerOff > sp.bottom) return sp.left - adjust;
-      else if (innerOff < sp.top) return sp.left + adjust;
-      else wrongLine = false;
-      return sp.left;
-    }
-
-    var bidi = getOrder(lineObj), dist = lineObj.text.length;
-    var from = lineLeft(lineObj), to = lineRight(lineObj);
-    var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
-
-    if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
-    // Do a binary search between these bounds.
-    for (;;) {
-      if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
-        var ch = x < fromX || x - fromX <= toX - x ? from : to;
-        var xDiff = x - (ch == from ? fromX : toX);
-        while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
-        var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
-                              xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
-        return pos;
-      }
-      var step = Math.ceil(dist / 2), middle = from + step;
-      if (bidi) {
-        middle = from;
-        for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
-      }
-      var middleX = getX(middle);
-      if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
-      else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
-    }
-  }
-
-  var measureText;
-  // Compute the default text height.
-  function textHeight(display) {
-    if (display.cachedTextHeight != null) return display.cachedTextHeight;
-    if (measureText == null) {
-      measureText = elt("pre");
-      // Measure a bunch of lines, for browsers that compute
-      // fractional heights.
-      for (var i = 0; i < 49; ++i) {
-        measureText.appendChild(document.createTextNode("x"));
-        measureText.appendChild(elt("br"));
-      }
-      measureText.appendChild(document.createTextNode("x"));
-    }
-    removeChildrenAndAdd(display.measure, measureText);
-    var height = measureText.offsetHeight / 50;
-    if (height > 3) display.cachedTextHeight = height;
-    removeChildren(display.measure);
-    return height || 1;
-  }
-
-  // Compute the default character width.
-  function charWidth(display) {
-    if (display.cachedCharWidth != null) return display.cachedCharWidth;
-    var anchor = elt("span", "xxxxxxxxxx");
-    var pre = elt("pre", [anchor]);
-    removeChildrenAndAdd(display.measure, pre);
-    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
-    if (width > 2) display.cachedCharWidth = width;
-    return width || 10;
-  }
-
-  // OPERATIONS
-
-  // Operations are used to wrap a series of changes to the editor
-  // state in such a way that each change won't have to update the
-  // cursor and display (which would be awkward, slow, and
-  // error-prone). Instead, display updates are batched and then all
-  // combined and executed at once.
-
-  var operationGroup = null;
-
-  var nextOpId = 0;
-  // Start a new operation.
-  function startOperation(cm) {
-    cm.curOp = {
-      cm: cm,
-      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
-      startHeight: cm.doc.height, // Used to detect need to update scrollbar
-      forceUpdate: false,      // Used to force a redraw
-      updateInput: null,       // Whether to reset the input textarea
-      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
-      changeObjs: null,        // Accumulated changes, for firing change events
-      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
-      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
-      selectionChanged: false, // Whether the selection needs to be redrawn
-      updateMaxLine: false,    // Set when the widest line needs to be determined anew
-      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
-      scrollToPos: null,       // Used to scroll to a specific position
-      focus: false,
-      id: ++nextOpId           // Unique ID
-    };
-    if (operationGroup) {
-      operationGroup.ops.push(cm.curOp);
-    } else {
-      cm.curOp.ownsGroup = operationGroup = {
-        ops: [cm.curOp],
-        delayedCallbacks: []
-      };
-    }
-  }
-
-  function fireCallbacksForOps(group) {
-    // Calls delayed callbacks and cursorActivity handlers until no
-    // new ones appear
-    var callbacks = group.delayedCallbacks, i = 0;
-    do {
-      for (; i < callbacks.length; i++)
-        callbacks[i].call(null);
-      for (var j = 0; j < group.ops.length; j++) {
-        var op = group.ops[j];
-        if (op.cursorActivityHandlers)
-          while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
-            op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm);
-      }
-    } while (i < callbacks.length);
-  }
-
-  // Finish an operation, updating the display and signalling delayed events
-  function endOperation(cm) {
-    var op = cm.curOp, group = op.ownsGroup;
-    if (!group) return;
-
-    try { fireCallbacksForOps(group); }
-    finally {
-      operationGroup = null;
-      for (var i = 0; i < group.ops.length; i++)
-        group.ops[i].cm.curOp = null;
-      endOperations(group);
-    }
-  }
-
-  // The DOM updates done when an operation finishes are batched so
-  // that the minimum number of relayouts are required.
-  function endOperations(group) {
-    var ops = group.ops;
-    for (var i = 0; i < ops.length; i++) // Read DOM
-      endOperation_R1(ops[i]);
-    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
-      endOperation_W1(ops[i]);
-    for (var i = 0; i < ops.length; i++) // Read DOM
-      endOperation_R2(ops[i]);
-    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
-      endOperation_W2(ops[i]);
-    for (var i = 0; i < ops.length; i++) // Read DOM
-      endOperation_finish(ops[i]);
-  }
-
-  function endOperation_R1(op) {
-    var cm = op.cm, display = cm.display;
-    maybeClipScrollbars(cm);
-    if (op.updateMaxLine) findMaxLine(cm);
-
-    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
-      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
-                         op.scrollToPos.to.line >= display.viewTo) ||
-      display.maxLineChanged && cm.options.lineWrapping;
-    op.update = op.mustUpdate &&
-      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
-  }
-
-  function endOperation_W1(op) {
-    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
-  }
-
-  function endOperation_R2(op) {
-    var cm = op.cm, display = cm.display;
-    if (op.updatedDisplay) updateHeightsInViewport(cm);
-
-    op.barMeasure = measureForScrollbars(cm);
-
-    // If the max line changed since it was last measured, measure it,
-    // and ensure the document's width matches it.
-    // updateDisplay_W2 will use these properties to do the actual resizing
-    if (display.maxLineChanged && !cm.options.lineWrapping) {
-      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
-      cm.display.sizerWidth = op.adjustWidthTo;
-      op.barMeasure.scrollWidth =
-        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
-      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
-    }
-
-    if (op.updatedDisplay || op.selectionChanged)
-      op.preparedSelection = display.input.prepareSelection();
-  }
-
-  function endOperation_W2(op) {
-    var cm = op.cm;
-
-    if (op.adjustWidthTo != null) {
-      cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
-      if (op.maxScrollLeft < cm.doc.scrollLeft)
-        setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);
-      cm.display.maxLineChanged = false;
-    }
-
-    if (op.preparedSelection)
-      cm.display.input.showSelection(op.preparedSelection);
-    if (op.updatedDisplay)
-      setDocumentHeight(cm, op.barMeasure);
-    if (op.updatedDisplay || op.startHeight != cm.doc.height)
-      updateScrollbars(cm, op.barMeasure);
-
-    if (op.selectionChanged) restartBlink(cm);
-
-    if (cm.state.focused && op.updateInput)
-      cm.display.input.reset(op.typing);
-    if (op.focus && op.focus == activeElt()) ensureFocus(op.cm);
-  }
-
-  function endOperation_finish(op) {
-    var cm = op.cm, display = cm.display, doc = cm.doc;
-
-    if (op.updatedDisplay) postUpdateDisplay(cm, op.update);
-
-    // Abort mouse wheel delta measurement, when scrolling explicitly
-    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
-      display.wheelStartX = display.wheelStartY = null;
-
-    // Propagate the scroll position to the actual DOM scroller
-    if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {
-      doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
-      display.scrollbars.setScrollTop(doc.scrollTop);
-      display.scroller.scrollTop = doc.scrollTop;
-    }
-    if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {
-      doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft));
-      display.scrollbars.setScrollLeft(doc.scrollLeft);
-      display.scroller.scrollLeft = doc.scrollLeft;
-      alignHorizontally(cm);
-    }
-    // If we need to scroll a specific position into view, do so.
-    if (op.scrollToPos) {
-      var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
-                                     clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
-      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
-    }
-
-    // Fire events for markers that are hidden/unidden by editing or
-    // undoing
-    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
-    if (hidden) for (var i = 0; i < hidden.length; ++i)
-      if (!hidden[i].lines.length) signal(hidden[i], "hide");
-    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
-      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");
-
-    if (display.wrapper.offsetHeight)
-      doc.scrollTop = cm.display.scroller.scrollTop;
-
-    // Fire change events, and delayed event handlers
-    if (op.changeObjs)
-      signal(cm, "changes", cm, op.changeObjs);
-    if (op.update)
-      op.update.finish();
-  }
-
-  // Run the given function in an operation
-  function runInOp(cm, f) {
-    if (cm.curOp) return f();
-    startOperation(cm);
-    try { return f(); }
-    finally { endOperation(cm); }
-  }
-  // Wraps a function in an operation. Returns the wrapped function.
-  function operation(cm, f) {
-    return function() {
-      if (cm.curOp) return f.apply(cm, arguments);
-      startOperation(cm);
-      try { return f.apply(cm, arguments); }
-      finally { endOperation(cm); }
-    };
-  }
-  // Used to add methods to editor and doc instances, wrapping them in
-  // operations.
-  function methodOp(f) {
-    return function() {
-      if (this.curOp) return f.apply(this, arguments);
-      startOperation(this);
-      try { return f.apply(this, arguments); }
-      finally { endOperation(this); }
-    };
-  }
-  function docMethodOp(f) {
-    return function() {
-      var cm = this.cm;
-      if (!cm || cm.curOp) return f.apply(this, arguments);
-      startOperation(cm);
-      try { return f.apply(this, arguments); }
-      finally { endOperation(cm); }
-    };
-  }
-
-  // VIEW TRACKING
-
-  // These objects are used to represent the visible (currently drawn)
-  // part of the document. A LineView may correspond to multiple
-  // logical lines, if those are connected by collapsed ranges.
-  function LineView(doc, line, lineN) {
-    // The starting line
-    this.line = line;
-    // Continuing lines, if any
-    this.rest = visualLineContinued(line);
-    // Number of logical lines in this visual line
-    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
-    this.node = this.text = null;
-    this.hidden = lineIsHidden(doc, line);
-  }
-
-  // Create a range of LineView objects for the given lines.
-  function buildViewArray(cm, from, to) {
-    var array = [], nextPos;
-    for (var pos = from; pos < to; pos = nextPos) {
-      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
-      nextPos = pos + view.size;
-      array.push(view);
-    }
-    return array;
-  }
-
-  // Updates the display.view data structure for a given change to the
-  // document. From and to are in pre-change coordinates. Lendiff is
-  // the amount of lines added or subtracted by the change. This is
-  // used for changes that span multiple lines, or change the way
-  // lines are divided into visual lines. regLineChange (below)
-  // registers single-line changes.
-  function regChange(cm, from, to, lendiff) {
-    if (from == null) from = cm.doc.first;
-    if (to == null) to = cm.doc.first + cm.doc.size;
-    if (!lendiff) lendiff = 0;
-
-    var display = cm.display;
-    if (lendiff && to < display.viewTo &&
-        (display.updateLineNumbers == null || display.updateLineNumbers > from))
-      display.updateLineNumbers = from;
-
-    cm.curOp.viewChanged = true;
-
-    if (from >= display.viewTo) { // Change after
-      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
-        resetView(cm);
-    } else if (to <= display.viewFrom) { // Change before
-      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
-        resetView(cm);
-      } else {
-        display.viewFrom += lendiff;
-        display.viewTo += lendiff;
-      }
-    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
-      resetView(cm);
-    } else if (from <= display.viewFrom) { // Top overlap
-      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
-      if (cut) {
-        display.view = display.view.slice(cut.index);
-        display.viewFrom = cut.lineN;
-        display.viewTo += lendiff;
-      } else {
-        resetView(cm);
-      }
-    } else if (to >= display.viewTo) { // Bottom overlap
-      var cut = viewCuttingPoint(cm, from, from, -1);
-      if (cut) {
-        display.view = display.view.slice(0, cut.index);
-        display.viewTo = cut.lineN;
-      } else {
-        resetView(cm);
-      }
-    } else { // Gap in the middle
-      var cutTop = viewCuttingPoint(cm, from, from, -1);
-      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
-      if (cutTop && cutBot) {
-        display.view = display.view.slice(0, cutTop.index)
-          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
-          .concat(display.view.slice(cutBot.index));
-        display.viewTo += lendiff;
-      } else {
-        resetView(cm);
-      }
-    }
-
-    var ext = display.externalMeasured;
-    if (ext) {
-      if (to < ext.lineN)
-        ext.lineN += lendiff;
-      else if (from < ext.lineN + ext.size)
-        display.externalMeasured = null;
-    }
-  }
-
-  // Register a change to a single line. Type must be one of "text",
-  // "gutter", "class", "widget"
-  function regLineChange(cm, line, type) {
-    cm.curOp.viewChanged = true;
-    var display = cm.display, ext = cm.display.externalMeasured;
-    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
-      display.externalMeasured = null;
-
-    if (line < display.viewFrom || line >= display.viewTo) return;
-    var lineView = display.view[findViewIndex(cm, line)];
-    if (lineView.node == null) return;
-    var arr = lineView.changes || (lineView.changes = []);
-    if (indexOf(arr, type) == -1) arr.push(type);
-  }
-
-  // Clear the view.
-  function resetView(cm) {
-    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
-    cm.display.view = [];
-    cm.display.viewOffset = 0;
-  }
-
-  // Find the view element corresponding to a given line. Return null
-  // when the line isn't visible.
-  function findViewIndex(cm, n) {
-    if (n >= cm.display.viewTo) return null;
-    n -= cm.display.viewFrom;
-    if (n < 0) return null;
-    var view = cm.display.view;
-    for (var i = 0; i < view.length; i++) {
-      n -= view[i].size;
-      if (n < 0) return i;
-    }
-  }
-
-  function viewCuttingPoint(cm, oldN, newN, dir) {
-    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
-    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
-      return {index: index, lineN: newN};
-    for (var i = 0, n = cm.display.viewFrom; i < index; i++)
-      n += view[i].size;
-    if (n != oldN) {
-      if (dir > 0) {
-        if (index == view.length - 1) return null;
-        diff = (n + view[index].size) - oldN;
-        index++;
-      } else {
-        diff = n - oldN;
-      }
-      oldN += diff; newN += diff;
-    }
-    while (visualLineNo(cm.doc, newN) != newN) {
-      if (index == (dir < 0 ? 0 : view.length - 1)) return null;
-      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
-      index += dir;
-    }
-    return {index: index, lineN: newN};
-  }
-
-  // Force the view to cover a given range, adding empty view element
-  // or clipping off existing ones as needed.
-  function adjustView(cm, from, to) {
-    var display = cm.display, view = display.view;
-    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
-      display.view = buildViewArray(cm, from, to);
-      display.viewFrom = from;
-    } else {
-      if (display.viewFrom > from)
-        display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
-      else if (display.viewFrom < from)
-        display.view = display.view.slice(findViewIndex(cm, from));
-      display.viewFrom = from;
-      if (display.viewTo < to)
-        display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
-      else if (display.viewTo > to)
-        display.view = display.view.slice(0, findViewIndex(cm, to));
-    }
-    display.viewTo = to;
-  }
-
-  // Count the number of lines in the view whose DOM representation is
-  // out of date (or nonexistent).
-  function countDirtyView(cm) {
-    var view = cm.display.view, dirty = 0;
-    for (var i = 0; i < view.length; i++) {
-      var lineView = view[i];
-      if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;
-    }
-    return dirty;
-  }
-
-  // EVENT HANDLERS
-
-  // Attach the necessary event handlers when initializing the editor
-  function registerEventHandlers(cm) {
-    var d = cm.display;
-    on(d.scroller, "mousedown", operation(cm, onMouseDown));
-    // Older IE's will not fire a second mousedown for a double click
-    if (ie && ie_version < 11)
-      on(d.scroller, "dblclick", operation(cm, function(e) {
-        if (signalDOMEvent(cm, e)) return;
-        var pos = posFromMouse(cm, e);
-        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
-        e_preventDefault(e);
-        var word = cm.findWordAt(pos);
-        extendSelection(cm.doc, word.anchor, word.head);
-      }));
-    else
-      on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
-    // Some browsers fire contextmenu *after* opening the menu, at
-    // which point we can't mess with it anymore. Context menu is
-    // handled in onMouseDown for these browsers.
-    if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
-
-    // Used to suppress mouse event handling when a touch happens
-    var touchFinished, prevTouch = {end: 0};
-    function finishTouch() {
-      if (d.activeTouch) {
-        touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000);
-        prevTouch = d.activeTouch;
-        prevTouch.end = +new Date;
-      }
-    };
-    function isMouseLikeTouchEvent(e) {
-      if (e.touches.length != 1) return false;
-      var touch = e.touches[0];
-      return touch.radiusX <= 1 && touch.radiusY <= 1;
-    }
-    function farAway(touch, other) {
-      if (other.left == null) return true;
-      var dx = other.left - touch.left, dy = other.top - touch.top;
-      return dx * dx + dy * dy > 20 * 20;
-    }
-    on(d.scroller, "touchstart", function(e) {
-      if (!isMouseLikeTouchEvent(e)) {
-        clearTimeout(touchFinished);
-        var now = +new Date;
-        d.activeTouch = {start: now, moved: false,
-                         prev: now - prevTouch.end <= 300 ? prevTouch : null};
-        if (e.touches.length == 1) {
-          d.activeTouch.left = e.touches[0].pageX;
-          d.activeTouch.top = e.touches[0].pageY;
-        }
-      }
-    });
-    on(d.scroller, "touchmove", function() {
-      if (d.activeTouch) d.activeTouch.moved = true;
-    });
-    on(d.scroller, "touchend", function(e) {
-      var touch = d.activeTouch;
-      if (touch && !eventInWidget(d, e) && touch.left != null &&
-          !touch.moved && new Date - touch.start < 300) {
-        var pos = cm.coordsChar(d.activeTouch, "page"), range;
-        if (!touch.prev || farAway(touch, touch.prev)) // Single tap
-          range = new Range(pos, pos);
-        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
-          range = cm.findWordAt(pos);
-        else // Triple tap
-          range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)));
-        cm.setSelection(range.anchor, range.head);
-        cm.focus();
-        e_preventDefault(e);
-      }
-      finishTouch();
-    });
-    on(d.scroller, "touchcancel", finishTouch);
-
-    // Sync scrolling between fake scrollbars and real scrollable
-    // area, ensure viewport is updated when scrolling.
-    on(d.scroller, "scroll", function() {
-      if (d.scroller.clientHeight) {
-        setScrollTop(cm, d.scroller.scrollTop);
-        setScrollLeft(cm, d.scroller.scrollLeft, true);
-        signal(cm, "scroll", cm);
-      }
-    });
-
-    // Listen to wheel events in order to try and update the viewport on time.
-    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
-    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
-
-    // Prevent wrapper from ever scrolling
-    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
-
-    d.dragFunctions = {
-      enter: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);},
-      over: function(e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},
-      start: function(e){onDragStart(cm, e);},
-      drop: operation(cm, onDrop),
-      leave: function() {clearDragCursor(cm);}
-    };
-
-    var inp = d.input.getField();
-    on(inp, "keyup", function(e) { onKeyUp.call(cm, e); });
-    on(inp, "keydown", operation(cm, onKeyDown));
-    on(inp, "keypress", operation(cm, onKeyPress));
-    on(inp, "focus", bind(onFocus, cm));
-    on(inp, "blur", bind(onBlur, cm));
-  }
-
-  function dragDropChanged(cm, value, old) {
-    var wasOn = old && old != CodeMirror.Init;
-    if (!value != !wasOn) {
-      var funcs = cm.display.dragFunctions;
-      var toggle = value ? on : off;
-      toggle(cm.display.scroller, "dragstart", funcs.start);
-      toggle(cm.display.scroller, "dragenter", funcs.enter);
-      toggle(cm.display.scroller, "dragover", funcs.over);
-      toggle(cm.display.scroller, "dragleave", funcs.leave);
-      toggle(cm.display.scroller, "drop", funcs.drop);
-    }
-  }
-
-  // Called when the window resizes
-  function onResize(cm) {
-    var d = cm.display;
-    if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
-      return;
-    // Might be a text scaling operation, clear size caches.
-    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
-    d.scrollbarsClipped = false;
-    cm.setSize();
-  }
-
-  // MOUSE EVENTS
-
-  // Return true when the given mouse event happened in a widget
-  function eventInWidget(display, e) {
-    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
-      if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
-          (n.parentNode == display.sizer && n != display.mover))
-        return true;
-    }
-  }
-
-  // Given a mouse event, find the corresponding position. If liberal
-  // is false, it checks whether a gutter or scrollbar was clicked,
-  // and returns null if it was. forRect is used by rectangular
-  // selections, and tries to estimate a character position even for
-  // coordinates beyond the right of the text.
-  function posFromMouse(cm, e, liberal, forRect) {
-    var display = cm.display;
-    if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") return null;
-
-    var x, y, space = display.lineSpace.getBoundingClientRect();
-    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
-    try { x = e.clientX - space.left; y = e.clientY - space.top; }
-    catch (e) { return null; }
-    var coords = coordsChar(cm, x, y), line;
-    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
-      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
-      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
-    }
-    return coords;
-  }
-
-  // A mouse down can be a single click, double click, triple click,
-  // start of selection drag, start of text drag, new cursor
-  // (ctrl-click), rectangle drag (alt-drag), or xwin
-  // middle-click-paste. Or it might be a click on something we should
-  // not interfere with, such as a scrollbar or widget.
-  function onMouseDown(e) {
-    var cm = this, display = cm.display;
-    if (display.activeTouch && display.input.supportsTouch() || signalDOMEvent(cm, e)) return;
-    display.shift = e.shiftKey;
-
-    if (eventInWidget(display, e)) {
-      if (!webkit) {
-        // Briefly turn off draggability, to allow widgets to do
-        // normal dragging things.
-        display.scroller.draggable = false;
-        setTimeout(function(){display.scroller.draggable = true;}, 100);
-      }
-      return;
-    }
-    if (clickInGutter(cm, e)) return;
-    var start = posFromMouse(cm, e);
-    window.focus();
-
-    switch (e_button(e)) {
-    case 1:
-      // #3261: make sure, that we're not starting a second selection
-      if (cm.state.selectingText)
-        cm.state.selectingText(e);
-      else if (start)
-        leftButtonDown(cm, e, start);
-      else if (e_target(e) == display.scroller)
-        e_preventDefault(e);
-      break;
-    case 2:
-      if (webkit) cm.state.lastMiddleDown = +new Date;
-      if (start) extendSelection(cm.doc, start);
-      setTimeout(function() {display.input.focus();}, 20);
-      e_preventDefault(e);
-      break;
-    case 3:
-      if (captureRightClick) onContextMenu(cm, e);
-      else delayBlurEvent(cm);
-      break;
-    }
-  }
-
-  var lastClick, lastDoubleClick;
-  function leftButtonDown(cm, e, start) {
-    if (ie) setTimeout(bind(ensureFocus, cm), 0);
-    else cm.curOp.focus = activeElt();
-
-    var now = +new Date, type;
-    if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
-      type = "triple";
-    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
-      type = "double";
-      lastDoubleClick = {time: now, pos: start};
-    } else {
-      type = "single";
-      lastClick = {time: now, pos: start};
-    }
-
-    var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;
-    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&
-        type == "single" && (contained = sel.contains(start)) > -1 &&
-        (cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&
-        (cmp(contained.to(), start) > 0 || start.xRel < 0))
-      leftButtonStartDrag(cm, e, start, modifier);
-    else
-      leftButtonSelect(cm, e, start, type, modifier);
-  }
-
-  // Start a text drag. When it ends, see if any dragging actually
-  // happen, and treat as a click if it didn't.
-  function leftButtonStartDrag(cm, e, start, modifier) {
-    var display = cm.display, startTime = +new Date;
-    var dragEnd = operation(cm, function(e2) {
-      if (webkit) display.scroller.draggable = false;
-      cm.state.draggingText = false;
-      off(document, "mouseup", dragEnd);
-      off(display.scroller, "drop", dragEnd);
-      if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
-        e_preventDefault(e2);
-        if (!modifier && +new Date - 200 < startTime)
-          extendSelection(cm.doc, start);
-        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
-        if (webkit || ie && ie_version == 9)
-          setTimeout(function() {document.body.focus(); display.input.focus();}, 20);
-        else
-          display.input.focus();
-      }
-    });
-    // Let the drag handler handle this.
-    if (webkit) display.scroller.draggable = true;
-    cm.state.draggingText = dragEnd;
-    // IE's approach to draggable
-    if (display.scroller.dragDrop) display.scroller.dragDrop();
-    on(document, "mouseup", dragEnd);
-    on(display.scroller, "drop", dragEnd);
-  }
-
-  // Normal selection, as opposed to text dragging.
-  function leftButtonSelect(cm, e, start, type, addNew) {
-    var display = cm.display, doc = cm.doc;
-    e_preventDefault(e);
-
-    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
-    if (addNew && !e.shiftKey) {
-      ourIndex = doc.sel.contains(start);
-      if (ourIndex > -1)
-        ourRange = ranges[ourIndex];
-      else
-        ourRange = new Range(start, start);
-    } else {
-      ourRange = doc.sel.primary();
-      ourIndex = doc.sel.primIndex;
-    }
-
-    if (e.altKey) {
-      type = "rect";
-      if (!addNew) ourRange = new Range(start, start);
-      start = posFromMouse(cm, e, true, true);
-      ourIndex = -1;
-    } else if (type == "double") {
-      var word = cm.findWordAt(start);
-      if (cm.display.shift || doc.extend)
-        ourRange = extendRange(doc, ourRange, word.anchor, word.head);
-      else
-        ourRange = word;
-    } else if (type == "triple") {
-      var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
-      if (cm.display.shift || doc.extend)
-        ourRange = extendRange(doc, ourRange, line.anchor, line.head);
-      else
-        ourRange = line;
-    } else {
-      ourRange = extendRange(doc, ourRange, start);
-    }
-
-    if (!addNew) {
-      ourIndex = 0;
-      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
-      startSel = doc.sel;
-    } else if (ourIndex == -1) {
-      ourIndex = ranges.length;
-      setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
-                   {scroll: false, origin: "*mouse"});
-    } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) {
-      setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
-                   {scroll: false, origin: "*mouse"});
-      startSel = doc.sel;
-    } else {
-      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
-    }
-
-    var lastPos = start;
-    function extendTo(pos) {
-      if (cmp(lastPos, pos) == 0) return;
-      lastPos = pos;
-
-      if (type == "rect") {
-        var ranges = [], tabSize = cm.options.tabSize;
-        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
-        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
-        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
-        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
-             line <= end; line++) {
-          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
-          if (left == right)
-            ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
-          else if (text.length > leftPos)
-            ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
-        }
-        if (!ranges.length) ranges.push(new Range(start, start));
-        setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
-                     {origin: "*mouse", scroll: false});
-        cm.scrollIntoView(pos);
-      } else {
-        var oldRange = ourRange;
-        var anchor = oldRange.anchor, head = pos;
-        if (type != "single") {
-          if (type == "double")
-            var range = cm.findWordAt(pos);
-          else
-            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
-          if (cmp(range.anchor, anchor) > 0) {
-            head = range.head;
-            anchor = minPos(oldRange.from(), range.anchor);
-          } else {
-            head = range.anchor;
-            anchor = maxPos(oldRange.to(), range.head);
-          }
-        }
-        var ranges = startSel.ranges.slice(0);
-        ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
-        setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
-      }
-    }
-
-    var editorSize = display.wrapper.getBoundingClientRect();
-    // Used to ensure timeout re-tries don't fire when another extend
-    // happened in the meantime (clearTimeout isn't reliable -- at
-    // least on Chrome, the timeouts still happen even when cleared,
-    // if the clear happens after their scheduled firing time).
-    var counter = 0;
-
-    function extend(e) {
-      var curCount = ++counter;
-      var cur = posFromMouse(cm, e, true, type == "rect");
-      if (!cur) return;
-      if (cmp(cur, lastPos) != 0) {
-        cm.curOp.focus = activeElt();
-        extendTo(cur);
-        var visible = visibleLines(display, doc);
-        if (cur.line >= visible.to || cur.line < visible.from)
-          setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
-      } else {
-        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
-        if (outside) setTimeout(operation(cm, function() {
-          if (counter != curCount) return;
-          display.scroller.scrollTop += outside;
-          extend(e);
-        }), 50);
-      }
-    }
-
-    function done(e) {
-      cm.state.selectingText = false;
-      counter = Infinity;
-      e_preventDefault(e);
-      display.input.focus();
-      off(document, "mousemove", move);
-      off(document, "mouseup", up);
-      doc.history.lastSelOrigin = null;
-    }
-
-    var move = operation(cm, function(e) {
-      if (!e_button(e)) done(e);
-      else extend(e);
-    });
-    var up = operation(cm, done);
-    cm.state.selectingText = up;
-    on(document, "mousemove", move);
-    on(document, "mouseup", up);
-  }
-
-  // Determines whether an event happened in the gutter, and fires the
-  // handlers for the corresponding event.
-  function gutterEvent(cm, e, type, prevent, signalfn) {
-    try { var mX = e.clientX, mY = e.clientY; }
-    catch(e) { return false; }
-    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
-    if (prevent) e_preventDefault(e);
-
-    var display = cm.display;
-    var lineBox = display.lineDiv.getBoundingClientRect();
-
-    if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
-    mY -= lineBox.top - display.viewOffset;
-
-    for (var i = 0; i < cm.options.gutters.length; ++i) {
-      var g = display.gutters.childNodes[i];
-      if (g && g.getBoundingClientRect().right >= mX) {
-        var line = lineAtHeight(cm.doc, mY);
-        var gutter = cm.options.gutters[i];
-        signalfn(cm, type, cm, line, gutter, e);
-        return e_defaultPrevented(e);
-      }
-    }
-  }
-
-  function clickInGutter(cm, e) {
-    return gutterEvent(cm, e, "gutterClick", true, signalLater);
-  }
-
-  // Kludge to work around strange IE behavior where it'll sometimes
-  // re-fire a series of drag-related events right after the drop (#1551)
-  var lastDrop = 0;
-
-  function onDrop(e) {
-    var cm = this;
-    clearDragCursor(cm);
-    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
-      return;
-    e_preventDefault(e);
-    if (ie) lastDrop = +new Date;
-    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
-    if (!pos || isReadOnly(cm)) return;
-    // Might be a file drop, in which case we simply extract the text
-    // and insert it.
-    if (files && files.length && window.FileReader && window.File) {
-      var n = files.length, text = Array(n), read = 0;
-      var loadFile = function(file, i) {
-        if (cm.options.allowDropFileTypes &&
-            indexOf(cm.options.allowDropFileTypes, file.type) == -1)
-          return;
-
-        var reader = new FileReader;
-        reader.onload = operation(cm, function() {
-          var content = reader.result;
-          if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) content = "";
-          text[i] = content;
-          if (++read == n) {
-            pos = clipPos(cm.doc, pos);
-            var change = {from: pos, to: pos,
-                          text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
-                          origin: "paste"};
-            makeChange(cm.doc, change);
-            setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
-          }
-        });
-        reader.readAsText(file);
-      };
-      for (var i = 0; i < n; ++i) loadFile(files[i], i);
-    } else { // Normal drop
-      // Don't do a replace if the drop happened inside of the selected text.
-      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
-        cm.state.draggingText(e);
-        // Ensure the editor is re-focused
-        setTimeout(function() {cm.display.input.focus();}, 20);
-        return;
-      }
-      try {
-        var text = e.dataTransfer.getData("Text");
-        if (text) {
-          if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey))
-            var selected = cm.listSelections();
-          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
-          if (selected) for (var i = 0; i < selected.length; ++i)
-            replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
-          cm.replaceSelection(text, "around", "paste");
-          cm.display.input.focus();
-        }
-      }
-      catch(e){}
-    }
-  }
-
-  function onDragStart(cm, e) {
-    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
-    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
-
-    e.dataTransfer.setData("Text", cm.getSelection());
-
-    // Use dummy image instead of default browsers image.
-    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
-    if (e.dataTransfer.setDragImage && !safari) {
-      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
-      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
-      if (presto) {
-        img.width = img.height = 1;
-        cm.display.wrapper.appendChild(img);
-        // Force a relayout, or Opera won't use our image for some obscure reason
-        img._top = img.offsetTop;
-      }
-      e.dataTransfer.setDragImage(img, 0, 0);
-      if (presto) img.parentNode.removeChild(img);
-    }
-  }
-
-  function onDragOver(cm, e) {
-    var pos = posFromMouse(cm, e);
-    if (!pos) return;
-    var frag = document.createDocumentFragment();
-    drawSelectionCursor(cm, pos, frag);
-    if (!cm.display.dragCursor) {
-      cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors");
-      cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);
-    }
-    removeChildrenAndAdd(cm.display.dragCursor, frag);
-  }
-
-  function clearDragCursor(cm) {
-    if (cm.display.dragCursor) {
-      cm.display.lineSpace.removeChild(cm.display.dragCursor);
-      cm.display.dragCursor = null;
-    }
-  }
-
-  // SCROLL EVENTS
-
-  // Sync the scrollable area and scrollbars, ensure the viewport
-  // covers the visible area.
-  function setScrollTop(cm, val) {
-    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
-    cm.doc.scrollTop = val;
-    if (!gecko) updateDisplaySimple(cm, {top: val});
-    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
-    cm.display.scrollbars.setScrollTop(val);
-    if (gecko) updateDisplaySimple(cm);
-    startWorker(cm, 100);
-  }
-  // Sync scroller and scrollbar, ensure the gutter elements are
-  // aligned.
-  function setScrollLeft(cm, val, isScroller) {
-    if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
-    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
-    cm.doc.scrollLeft = val;
-    alignHorizontally(cm);
-    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
-    cm.display.scrollbars.setScrollLeft(val);
-  }
-
-  // Since the delta values reported on mouse wheel events are
-  // unstandardized between browsers and even browser versions, and
-  // generally horribly unpredictable, this code starts by measuring
-  // the scroll effect that the first few mouse wheel events have,
-  // and, from that, detects the way it can convert deltas to pixel
-  // offsets afterwards.
-  //
-  // The reason we want to know the amount a wheel event will scroll
-  // is that it gives us a chance to update the display before the
-  // actual scrolling happens, reducing flickering.
-
-  var wheelSamples = 0, wheelPixelsPerUnit = null;
-  // Fill in a browser-detected starting value on browsers where we
-  // know one. These don't have to be accurate -- the result of them
-  // being wrong would just be a slight flicker on the first wheel
-  // scroll (if it is large enough).
-  if (ie) wheelPixelsPerUnit = -.53;
-  else if (gecko) wheelPixelsPerUnit = 15;
-  else if (chrome) wheelPixelsPerUnit = -.7;
-  else if (safari) wheelPixelsPerUnit = -1/3;
-
-  var wheelEventDelta = function(e) {
-    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
-    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
-    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
-    else if (dy == null) dy = e.wheelDelta;
-    return {x: dx, y: dy};
-  };
-  CodeMirror.wheelEventPixels = function(e) {
-    var delta = wheelEventDelta(e);
-    delta.x *= wheelPixelsPerUnit;
-    delta.y *= wheelPixelsPerUnit;
-    return delta;
-  };
-
-  function onScrollWheel(cm, e) {
-    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;
-
-    var display = cm.display, scroll = display.scroller;
-    // Quit if there's nothing to scroll here
-    if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
-          dy && scroll.scrollHeight > scroll.clientHeight)) return;
-
-    // Webkit browsers on OS X abort momentum scrolls when the target
-    // of the scroll event is removed from the scrollable element.
-    // This hack (see related code in patchDisplay) makes sure the
-    // element is kept around.
-    if (dy && mac && webkit) {
-      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
-        for (var i = 0; i < view.length; i++) {
-          if (view[i].node == cur) {
-            cm.display.currentWheelTarget = cur;
-            break outer;
-          }
-        }
-      }
-    }
-
-    // On some browsers, horizontal scrolling will cause redraws to
-    // happen before the gutter has been realigned, causing it to
-    // wriggle around in a most unseemly way. When we have an
-    // estimated pixels/delta value, we just handle horizontal
-    // scrolling entirely here. It'll be slightly off from native, but
-    // better than glitching out.
-    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
-      if (dy)
-        setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
-      setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
-      e_preventDefault(e);
-      display.wheelStartX = null; // Abort measurement, if in progress
-      return;
-    }
-
-    // 'Project' the visible viewport to cover the area that is being
-    // scrolled into view (if we know enough to estimate it).
-    if (dy && wheelPixelsPerUnit != null) {
-      var pixels = dy * wheelPixelsPerUnit;
-      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
-      if (pixels < 0) top = Math.max(0, top + pixels - 50);
-      else bot = Math.min(cm.doc.height, bot + pixels + 50);
-      updateDisplaySimple(cm, {top: top, bottom: bot});
-    }
-
-    if (wheelSamples < 20) {
-      if (display.wheelStartX == null) {
-        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
-        display.wheelDX = dx; display.wheelDY = dy;
-        setTimeout(function() {
-          if (display.wheelStartX == null) return;
-          var movedX = scroll.scrollLeft - display.wheelStartX;
-          var movedY = scroll.scrollTop - display.wheelStartY;
-          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
-            (movedX && display.wheelDX && movedX / display.wheelDX);
-          display.wheelStartX = display.wheelStartY = null;
-          if (!sample) return;
-          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
-          ++wheelSamples;
-        }, 200);
-      } else {
-        display.wheelDX += dx; display.wheelDY += dy;
-      }
-    }
-  }
-
-  // KEY EVENTS
-
-  // Run a handler that was bound to a key.
-  function doHandleBinding(cm, bound, dropShift) {
-    if (typeof bound == "string") {
-      bound = commands[bound];
-      if (!bound) return false;
-    }
-    // Ensure previous input has been read, so that the handler sees a
-    // consistent view of the document
-    cm.display.input.ensurePolled();
-    var prevShift = cm.display.shift, done = false;
-    try {
-      if (isReadOnly(cm)) cm.state.suppressEdits = true;
-      if (dropShift) cm.display.shift = false;
-      done = bound(cm) != Pass;
-    } finally {
-      cm.display.shift = prevShift;
-      cm.state.suppressEdits = false;
-    }
-    return done;
-  }
-
-  function lookupKeyForEditor(cm, name, handle) {
-    for (var i = 0; i < cm.state.keyMaps.length; i++) {
-      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
-      if (result) return result;
-    }
-    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
-      || lookupKey(name, cm.options.keyMap, handle, cm);
-  }
-
-  var stopSeq = new Delayed;
-  function dispatchKey(cm, name, e, handle) {
-    var seq = cm.state.keySeq;
-    if (seq) {
-      if (isModifierKey(name)) return "handled";
-      stopSeq.set(50, function() {
-        if (cm.state.keySeq == seq) {
-          cm.state.keySeq = null;
-          cm.display.input.reset();
-        }
-      });
-      name = seq + " " + name;
-    }
-    var result = lookupKeyForEditor(cm, name, handle);
-
-    if (result == "multi")
-      cm.state.keySeq = name;
-    if (result == "handled")
-      signalLater(cm, "keyHandled", cm, name, e);
-
-    if (result == "handled" || result == "multi") {
-      e_preventDefault(e);
-      restartBlink(cm);
-    }
-
-    if (seq && !result && /\'$/.test(name)) {
-      e_preventDefault(e);
-      return true;
-    }
-    return !!result;
-  }
-
-  // Handle a key from the keydown event.
-  function handleKeyBinding(cm, e) {
-    var name = keyName(e, true);
-    if (!name) return false;
-
-    if (e.shiftKey && !cm.state.keySeq) {
-      // First try to resolve full name (including 'Shift-'). Failing
-      // that, see if there is a cursor-motion command (starting with
-      // 'go') bound to the keyname without 'Shift-'.
-      return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);})
-          || dispatchKey(cm, name, e, function(b) {
-               if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
-                 return doHandleBinding(cm, b);
-             });
-    } else {
-      return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); });
-    }
-  }
-
-  // Handle a key from the keypress event
-  function handleCharBinding(cm, e, ch) {
-    return dispatchKey(cm, "'" + ch + "'", e,
-                       function(b) { return doHandleBinding(cm, b, true); });
-  }
-
-  var lastStoppedKey = null;
-  function onKeyDown(e) {
-    var cm = this;
-    cm.curOp.focus = activeElt();
-    if (signalDOMEvent(cm, e)) return;
-    // IE does strange things with escape.
-    if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false;
-    var code = e.keyCode;
-    cm.display.shift = code == 16 || e.shiftKey;
-    var handled = handleKeyBinding(cm, e);
-    if (presto) {
-      lastStoppedKey = handled ? code : null;
-      // Opera has no cut event... we try to at least catch the key combo
-      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
-        cm.replaceSelection("", null, "cut");
-    }
-
-    // Turn mouse into crosshair when Alt is held on Mac.
-    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
-      showCrossHair(cm);
-  }
-
-  function showCrossHair(cm) {
-    var lineDiv = cm.display.lineDiv;
-    addClass(lineDiv, "CodeMirror-crosshair");
-
-    function up(e) {
-      if (e.keyCode == 18 || !e.altKey) {
-        rmClass(lineDiv, "CodeMirror-crosshair");
-        off(document, "keyup", up);
-        off(document, "mouseover", up);
-      }
-    }
-    on(document, "keyup", up);
-    on(document, "mouseover", up);
-  }
-
-  function onKeyUp(e) {
-    if (e.keyCode == 16) this.doc.sel.shift = false;
-    signalDOMEvent(this, e);
-  }
-
-  function onKeyPress(e) {
-    var cm = this;
-    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return;
-    var keyCode = e.keyCode, charCode = e.charCode;
-    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
-    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return;
-    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
-    if (handleCharBinding(cm, e, ch)) return;
-    cm.display.input.onKeyPress(e);
-  }
-
-  // FOCUS/BLUR EVENTS
-
-  function delayBlurEvent(cm) {
-    cm.state.delayingBlurEvent = true;
-    setTimeout(function() {
-      if (cm.state.delayingBlurEvent) {
-        cm.state.delayingBlurEvent = false;
-        onBlur(cm);
-      }
-    }, 100);
-  }
-
-  function onFocus(cm) {
-    if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false;
-
-    if (cm.options.readOnly == "nocursor") return;
-    if (!cm.state.focused) {
-      signal(cm, "focus", cm);
-      cm.state.focused = true;
-      addClass(cm.display.wrapper, "CodeMirror-focused");
-      // This test prevents this from firing when a context
-      // menu is closed (since the input reset would kill the
-      // select-all detection hack)
-      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
-        cm.display.input.reset();
-        if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730
-      }
-      cm.display.input.receivedFocus();
-    }
-    restartBlink(cm);
-  }
-  function onBlur(cm) {
-    if (cm.state.delayingBlurEvent) return;
-
-    if (cm.state.focused) {
-      signal(cm, "blur", cm);
-      cm.state.focused = false;
-      rmClass(cm.display.wrapper, "CodeMirror-focused");
-    }
-    clearInterval(cm.display.blinker);
-    setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
-  }
-
-  // CONTEXT MENU HANDLING
-
-  // To make the context menu work, we need to briefly unhide the
-  // textarea (making it as unobtrusive as possible) to let the
-  // right-click take effect on it.
-  function onContextMenu(cm, e) {
-    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return;
-    if (signalDOMEvent(cm, e, "contextmenu")) return;
-    cm.display.input.onContextMenu(e);
-  }
-
-  function contextMenuInGutter(cm, e) {
-    if (!hasHandler(cm, "gutterContextMenu")) return false;
-    return gutterEvent(cm, e, "gutterContextMenu", false, signal);
-  }
-
-  // UPDATING
-
-  // Compute the position of the end of a change (its 'to' property
-  // refers to the pre-change end).
-  var changeEnd = CodeMirror.changeEnd = function(change) {
-    if (!change.text) return change.to;
-    return Pos(change.from.line + change.text.length - 1,
-               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
-  };
-
-  // Adjust a position to refer to the post-change position of the
-  // same text, or the end of the change if the change covers it.
-  function adjustForChange(pos, change) {
-    if (cmp(pos, change.from) < 0) return pos;
-    if (cmp(pos, change.to) <= 0) return changeEnd(change);
-
-    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
-    if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
-    return Pos(line, ch);
-  }
-
-  function computeSelAfterChange(doc, change) {
-    var out = [];
-    for (var i = 0; i < doc.sel.ranges.length; i++) {
-      var range = doc.sel.ranges[i];
-      out.push(new Range(adjustForChange(range.anchor, change),
-                         adjustForChange(range.head, change)));
-    }
-    return normalizeSelection(out, doc.sel.primIndex);
-  }
-
-  function offsetPos(pos, old, nw) {
-    if (pos.line == old.line)
-      return Pos(nw.line, pos.ch - old.ch + nw.ch);
-    else
-      return Pos(nw.line + (pos.line - old.line), pos.ch);
-  }
-
-  // Used by replaceSelections to allow moving the selection to the
-  // start or around the replaced test. Hint may be "start" or "around".
-  function computeReplacedSel(doc, changes, hint) {
-    var out = [];
-    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
-    for (var i = 0; i < changes.length; i++) {
-      var change = changes[i];
-      var from = offsetPos(change.from, oldPrev, newPrev);
-      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
-      oldPrev = change.to;
-      newPrev = to;
-      if (hint == "around") {
-        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
-        out[i] = new Range(inv ? to : from, inv ? from : to);
-      } else {
-        out[i] = new Range(from, from);
-      }
-    }
-    return new Selection(out, doc.sel.primIndex);
-  }
-
-  // Allow "beforeChange" event handlers to influence a change
-  function filterChange(doc, change, update) {
-    var obj = {
-      canceled: false,
-      from: change.from,
-      to: change.to,
-      text: change.text,
-      origin: change.origin,
-      cancel: function() { this.canceled = true; }
-    };
-    if (update) obj.update = function(from, to, text, origin) {
-      if (from) this.from = clipPos(doc, from);
-      if (to) this.to = clipPos(doc, to);
-      if (text) this.text = text;
-      if (origin !== undefined) this.origin = origin;
-    };
-    signal(doc, "beforeChange", doc, obj);
-    if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);
-
-    if (obj.canceled) return null;
-    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
-  }
-
-  // Apply a change to a document, and add it to the document's
-  // history, and propagating it to all linked documents.
-  function makeChange(doc, change, ignoreReadOnly) {
-    if (doc.cm) {
-      if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
-      if (doc.cm.state.suppressEdits) return;
-    }
-
-    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
-      change = filterChange(doc, change, true);
-      if (!change) return;
-    }
-
-    // Possibly split or suppress the update based on the presence
-    // of read-only spans in its range.
-    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
-    if (split) {
-      for (var i = split.length - 1; i >= 0; --i)
-        makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
-    } else {
-      makeChangeInner(doc, change);
-    }
-  }
-
-  function makeChangeInner(doc, change) {
-    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
-    var selAfter = computeSelAfterChange(doc, change);
-    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
-
-    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
-    var rebased = [];
-
-    linkedDocs(doc, function(doc, sharedHist) {
-      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
-        rebaseHist(doc.history, change);
-        rebased.push(doc.history);
-      }
-      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
-    });
-  }
-
-  // Revert a change stored in a document's history.
-  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
-    if (doc.cm && doc.cm.state.suppressEdits) return;
-
-    var hist = doc.history, event, selAfter = doc.sel;
-    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
-
-    // Verify that there is a useable event (so that ctrl-z won't
-    // needlessly clear selection events)
-    for (var i = 0; i < source.length; i++) {
-      event = source[i];
-      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
-        break;
-    }
-    if (i == source.length) return;
-    hist.lastOrigin = hist.lastSelOrigin = null;
-
-    for (;;) {
-      event = source.pop();
-      if (event.ranges) {
-        pushSelectionToHistory(event, dest);
-        if (allowSelectionOnly && !event.equals(doc.sel)) {
-          setSelection(doc, event, {clearRedo: false});
-          return;
-        }
-        selAfter = event;
-      }
-      else break;
-    }
-
-    // Build up a reverse change object to add to the opposite history
-    // stack (redo when undoing, and vice versa).
-    var antiChanges = [];
-    pushSelectionToHistory(selAfter, dest);
-    dest.push({changes: antiChanges, generation: hist.generation});
-    hist.generation = event.generation || ++hist.maxGeneration;
-
-    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
-
-    for (var i = event.changes.length - 1; i >= 0; --i) {
-      var change = event.changes[i];
-      change.origin = type;
-      if (filter && !filterChange(doc, change, false)) {
-        source.length = 0;
-        return;
-      }
-
-      antiChanges.push(historyChangeFromChange(doc, change));
-
-      var after = i ? computeSelAfterChange(doc, change) : lst(source);
-      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
-      if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)});
-      var rebased = [];
-
-      // Propagate to the linked documents
-      linkedDocs(doc, function(doc, sharedHist) {
-        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
-          rebaseHist(doc.history, change);
-          rebased.push(doc.history);
-        }
-        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
-      });
-    }
-  }
-
-  // Sub-views need their line numbers shifted when text is added
-  // above or below them in the parent document.
-  function shiftDoc(doc, distance) {
-    if (distance == 0) return;
-    doc.first += distance;
-    doc.sel = new Selection(map(doc.sel.ranges, function(range) {
-      return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
-                       Pos(range.head.line + distance, range.head.ch));
-    }), doc.sel.primIndex);
-    if (doc.cm) {
-      regChange(doc.cm, doc.first, doc.first - distance, distance);
-      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
-        regLineChange(doc.cm, l, "gutter");
-    }
-  }
-
-  // More lower-level change function, handling only a single document
-  // (not linked ones).
-  function makeChangeSingleDoc(doc, change, selAfter, spans) {
-    if (doc.cm && !doc.cm.curOp)
-      return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);
-
-    if (change.to.line < doc.first) {
-      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
-      return;
-    }
-    if (change.from.line > doc.lastLine()) return;
-
-    // Clip the change to the size of this doc
-    if (change.from.line < doc.first) {
-      var shift = change.text.length - 1 - (doc.first - change.from.line);
-      shiftDoc(doc, shift);
-      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
-                text: [lst(change.text)], origin: change.origin};
-    }
-    var last = doc.lastLine();
-    if (change.to.line > last) {
-      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
-                text: [change.text[0]], origin: change.origin};
-    }
-
-    change.removed = getBetween(doc, change.from, change.to);
-
-    if (!selAfter) selAfter = computeSelAfterChange(doc, change);
-    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
-    else updateDoc(doc, change, spans);
-    setSelectionNoUndo(doc, selAfter, sel_dontScroll);
-  }
-
-  // Handle the interaction of a change to a document with the editor
-  // that this document is part of.
-  function makeChangeSingleDocInEditor(cm, change, spans) {
-    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;
-
-    var recomputeMaxLength = false, checkWidthStart = from.line;
-    if (!cm.options.lineWrapping) {
-      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
-      doc.iter(checkWidthStart, to.line + 1, function(line) {
-        if (line == display.maxLine) {
-          recomputeMaxLength = true;
-          return true;
-        }
-      });
-    }
-
-    if (doc.sel.contains(change.from, change.to) > -1)
-      signalCursorActivity(cm);
-
-    updateDoc(doc, change, spans, estimateHeight(cm));
-
-    if (!cm.options.lineWrapping) {
-      doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
-        var len = lineLength(line);
-        if (len > display.maxLineLength) {
-          display.maxLine = line;
-          display.maxLineLength = len;
-          display.maxLineChanged = true;
-          recomputeMaxLength = false;
-        }
-      });
-      if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
-    }
-
-    // Adjust frontier, schedule worker
-    doc.frontier = Math.min(doc.frontier, from.line);
-    startWorker(cm, 400);
-
-    var lendiff = change.text.length - (to.line - from.line) - 1;
-    // Remember that these lines changed, for updating the display
-    if (change.full)
-      regChange(cm);
-    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
-      regLineChange(cm, from.line, "text");
-    else
-      regChange(cm, from.line, to.line + 1, lendiff);
-
-    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
-    if (changeHandler || changesHandler) {
-      var obj = {
-        from: from, to: to,
-        text: change.text,
-        removed: change.removed,
-        origin: change.origin
-      };
-      if (changeHandler) signalLater(cm, "change", cm, obj);
-      if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);
-    }
-    cm.display.selForContextMenu = null;
-  }
-
-  function replaceRange(doc, code, from, to, origin) {
-    if (!to) to = from;
-    if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
-    if (typeof code == "string") code = doc.splitLines(code);
-    makeChange(doc, {from: from, to: to, text: code, origin: origin});
-  }
-
-  // SCROLLING THINGS INTO VIEW
-
-  // If an editor sits on the top or bottom of the window, partially
-  // scrolled out of view, this ensures that the cursor is visible.
-  function maybeScrollWindow(cm, coords) {
-    if (signalDOMEvent(cm, "scrollCursorIntoView")) return;
-
-    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
-    if (coords.top + box.top < 0) doScroll = true;
-    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
-    if (doScroll != null && !phantom) {
-      var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
-                           (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
-                           (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " +
-                           coords.left + "px; width: 2px;");
-      cm.display.lineSpace.appendChild(scrollNode);
-      scrollNode.scrollIntoView(doScroll);
-      cm.display.lineSpace.removeChild(scrollNode);
-    }
-  }
-
-  // Scroll a given position into view (immediately), verifying that
-  // it actually became visible (as line heights are accurately
-  // measured, the position of something may 'drift' during drawing).
-  function scrollPosIntoView(cm, pos, end, margin) {
-    if (margin == null) margin = 0;
-    for (var limit = 0; limit < 5; limit++) {
-      var changed = false, coords = cursorCoords(cm, pos);
-      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
-      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
-                                         Math.min(coords.top, endCoords.top) - margin,
-                                         Math.max(coords.left, endCoords.left),
-                                         Math.max(coords.bottom, endCoords.bottom) + margin);
-      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
-      if (scrollPos.scrollTop != null) {
-        setScrollTop(cm, scrollPos.scrollTop);
-        if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
-      }
-      if (scrollPos.scrollLeft != null) {
-        setScrollLeft(cm, scrollPos.scrollLeft);
-        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
-      }
-      if (!changed) break;
-    }
-    return coords;
-  }
-
-  // Scroll a given set of coordinates into view (immediately).
-  function scrollIntoView(cm, x1, y1, x2, y2) {
-    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
-    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
-    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
-  }
-
-  // Calculate a new scroll position needed to scroll the given
-  // rectangle into view. Returns an object with scrollTop and
-  // scrollLeft properties. When these are undefined, the
-  // vertical/horizontal position does not need to be adjusted.
-  function calculateScrollPos(cm, x1, y1, x2, y2) {
-    var display = cm.display, snapMargin = textHeight(cm.display);
-    if (y1 < 0) y1 = 0;
-    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
-    var screen = displayHeight(cm), result = {};
-    if (y2 - y1 > screen) y2 = y1 + screen;
-    var docBottom = cm.doc.height + paddingVert(display);
-    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
-    if (y1 < screentop) {
-      result.scrollTop = atTop ? 0 : y1;
-    } else if (y2 > screentop + screen) {
-      var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
-      if (newTop != screentop) result.scrollTop = newTop;
-    }
-
-    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
-    var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
-    var tooWide = x2 - x1 > screenw;
-    if (tooWide) x2 = x1 + screenw;
-    if (x1 < 10)
-      result.scrollLeft = 0;
-    else if (x1 < screenleft)
-      result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10));
-    else if (x2 > screenw + screenleft - 3)
-      result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw;
-    return result;
-  }
-
-  // Store a relative adjustment to the scroll position in the current
-  // operation (to be applied when the operation finishes).
-  function addToScrollPos(cm, left, top) {
-    if (left != null || top != null) resolveScrollToPos(cm);
-    if (left != null)
-      cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
-    if (top != null)
-      cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
-  }
-
-  // Make sure that at the end of the operation the current cursor is
-  // shown.
-  function ensureCursorVisible(cm) {
-    resolveScrollToPos(cm);
-    var cur = cm.getCursor(), from = cur, to = cur;
-    if (!cm.options.lineWrapping) {
-      from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
-      to = Pos(cur.line, cur.ch + 1);
-    }
-    cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
-  }
-
-  // When an operation has its scrollToPos property set, and another
-  // scroll action is applied before the end of the operation, this
-  // 'simulates' scrolling that position into view in a cheap way, so
-  // that the effect of intermediate scroll commands is not ignored.
-  function resolveScrollToPos(cm) {
-    var range = cm.curOp.scrollToPos;
-    if (range) {
-      cm.curOp.scrollToPos = null;
-      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
-      var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
-                                    Math.min(from.top, to.top) - range.margin,
-                                    Math.max(from.right, to.right),
-                                    Math.max(from.bottom, to.bottom) + range.margin);
-      cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
-    }
-  }
-
-  // API UTILITIES
-
-  // Indent the given line. The how parameter can be "smart",
-  // "add"/null, "subtract", or "prev". When aggressive is false
-  // (typically set to true for forced single-line indents), empty
-  // lines are not indented, and places where the mode returns Pass
-  // are left alone.
-  function indentLine(cm, n, how, aggressive) {
-    var doc = cm.doc, state;
-    if (how == null) how = "add";
-    if (how == "smart") {
-      // Fall back to "prev" when the mode doesn't have an indentation
-      // method.
-      if (!doc.mode.indent) how = "prev";
-      else state = getStateBefore(cm, n);
-    }
-
-    var tabSize = cm.options.tabSize;
-    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
-    if (line.stateAfter) line.stateAfter = null;
-    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
-    if (!aggressive && !/\S/.test(line.text)) {
-      indentation = 0;
-      how = "not";
-    } else if (how == "smart") {
-      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
-      if (indentation == Pass || indentation > 150) {
-        if (!aggressive) return;
-        how = "prev";
-      }
-    }
-    if (how == "prev") {
-      if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
-      else indentation = 0;
-    } else if (how == "add") {
-      indentation = curSpace + cm.options.indentUnit;
-    } else if (how == "subtract") {
-      indentation = curSpace - cm.options.indentUnit;
-    } else if (typeof how == "number") {
-      indentation = curSpace + how;
-    }
-    indentation = Math.max(0, indentation);
-
-    var indentString = "", pos = 0;
-    if (cm.options.indentWithTabs)
-      for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
-    if (pos < indentation) indentString += spaceStr(indentation - pos);
-
-    if (indentString != curSpaceString) {
-      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
-      line.stateAfter = null;
-      return true;
-    } else {
-      // Ensure that, if the cursor was in the whitespace at the start
-      // of the line, it is moved to the end of that space.
-      for (var i = 0; i < doc.sel.ranges.length; i++) {
-        var range = doc.sel.ranges[i];
-        if (range.head.line == n && range.head.ch < curSpaceString.length) {
-          var pos = Pos(n, curSpaceString.length);
-          replaceOneSelection(doc, i, new Range(pos, pos));
-          break;
-        }
-      }
-    }
-  }
-
-  // Utility for applying a change to a line by handle or number,
-  // returning the number and optionally registering the line as
-  // changed.
-  function changeLine(doc, handle, changeType, op) {
-    var no = handle, line = handle;
-    if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
-    else no = lineNo(handle);
-    if (no == null) return null;
-    if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType);
-    return line;
-  }
-
-  // Helper for deleting text near the selection(s), used to implement
-  // backspace, delete, and similar functionality.
-  function deleteNearSelection(cm, compute) {
-    var ranges = cm.doc.sel.ranges, kill = [];
-    // Build up a set of ranges to kill first, merging overlapping
-    // ranges.
-    for (var i = 0; i < ranges.length; i++) {
-      var toKill = compute(ranges[i]);
-      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
-        var replaced = kill.pop();
-        if (cmp(replaced.from, toKill.from) < 0) {
-          toKill.from = replaced.from;
-          break;
-        }
-      }
-      kill.push(toKill);
-    }
-    // Next, remove those actual ranges.
-    runInOp(cm, function() {
-      for (var i = kill.length - 1; i >= 0; i--)
-        replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
-      ensureCursorVisible(cm);
-    });
-  }
-
-  // Used for horizontal relative motion. Dir is -1 or 1 (left or
-  // right), unit can be "char", "column" (like char, but doesn't
-  // cross line boundaries), "word" (across next word), or "group" (to
-  // the start of next group of word or non-word-non-whitespace
-  // chars). The visually param controls whether, in right-to-left
-  // text, direction 1 means to move towards the next index in the
-  // string, or towards the character to the right of the current
-  // position. The resulting position will have a hitSide=true
-  // property if it reached the end of the document.
-  function findPosH(doc, pos, dir, unit, visually) {
-    var line = pos.line, ch = pos.ch, origDir = dir;
-    var lineObj = getLine(doc, line);
-    var possible = true;
-    function findNextLine() {
-      var l = line + dir;
-      if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
-      line = l;
-      return lineObj = getLine(doc, l);
-    }
-    function moveOnce(boundToLine) {
-      var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
-      if (next == null) {
-        if (!boundToLine && findNextLine()) {
-          if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
-          else ch = dir < 0 ? lineObj.text.length : 0;
-        } else return (possible = false);
-      } else ch = next;
-      return true;
-    }
-
-    if (unit == "char") moveOnce();
-    else if (unit == "column") moveOnce(true);
-    else if (unit == "word" || unit == "group") {
-      var sawType = null, group = unit == "group";
-      var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
-      for (var first = true;; first = false) {
-        if (dir < 0 && !moveOnce(!first)) break;
-        var cur = lineObj.text.charAt(ch) || "\n";
-        var type = isWordChar(cur, helper) ? "w"
-          : group && cur == "\n" ? "n"
-          : !group || /\s/.test(cur) ? null
-          : "p";
-        if (group && !first && !type) type = "s";
-        if (sawType && sawType != type) {
-          if (dir < 0) {dir = 1; moveOnce();}
-          break;
-        }
-
-        if (type) sawType = type;
-        if (dir > 0 && !moveOnce(!first)) break;
-      }
-    }
-    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
-    if (!possible) result.hitSide = true;
-    return result;
-  }
-
-  // For relative vertical movement. Dir may be -1 or 1. Unit can be
-  // "page" or "line". The resulting position will have a hitSide=true
-  // property if it reached the end of the document.
-  function findPosV(cm, pos, dir, unit) {
-    var doc = cm.doc, x = pos.left, y;
-    if (unit == "page") {
-      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
-      y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
-    } else if (unit == "line") {
-      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
-    }
-    for (;;) {
-      var target = coordsChar(cm, x, y);
-      if (!target.outside) break;
-      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
-      y += dir * 5;
-    }
-    return target;
-  }
-
-  // EDITOR METHODS
-
-  // The publicly visible API. Note that methodOp(f) means
-  // 'wrap f in an operation, performed on its `this` parameter'.
-
-  // This is not the complete set of editor methods. Most of the
-  // methods defined on the Doc type are also injected into
-  // CodeMirror.prototype, for backwards compatibility and
-  // convenience.
-
-  CodeMirror.prototype = {
-    constructor: CodeMirror,
-    focus: function(){window.focus(); this.display.input.focus();},
-
-    setOption: function(option, value) {
-      var options = this.options, old = options[option];
-      if (options[option] == value && option != "mode") return;
-      options[option] = value;
-      if (optionHandlers.hasOwnProperty(option))
-        operation(this, optionHandlers[option])(this, value, old);
-    },
-
-    getOption: function(option) {return this.options[option];},
-    getDoc: function() {return this.doc;},
-
-    addKeyMap: function(map, bottom) {
-      this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
-    },
-    removeKeyMap: function(map) {
-      var maps = this.state.keyMaps;
-      for (var i = 0; i < maps.length; ++i)
-        if (maps[i] == map || maps[i].name == map) {
-          maps.splice(i, 1);
-          return true;
-        }
-    },
-
-    addOverlay: methodOp(function(spec, options) {
-      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
-      if (mode.startState) throw new Error("Overlays may not be stateful.");
-      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
-      this.state.modeGen++;
-      regChange(this);
-    }),
-    removeOverlay: methodOp(function(spec) {
-      var overlays = this.state.overlays;
-      for (var i = 0; i < overlays.length; ++i) {
-        var cur = overlays[i].modeSpec;
-        if (cur == spec || typeof spec == "string" && cur.name == spec) {
-          overlays.splice(i, 1);
-          this.state.modeGen++;
-          regChange(this);
-          return;
-        }
-      }
-    }),
-
-    indentLine: methodOp(function(n, dir, aggressive) {
-      if (typeof dir != "string" && typeof dir != "number") {
-        if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
-        else dir = dir ? "add" : "subtract";
-      }
-      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
-    }),
-    indentSelection: methodOp(function(how) {
-      var ranges = this.doc.sel.ranges, end = -1;
-      for (var i = 0; i < ranges.length; i++) {
-        var range = ranges[i];
-        if (!range.empty()) {
-          var from = range.from(), to = range.to();
-          var start = Math.max(end, from.line);
-          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
-          for (var j = start; j < end; ++j)
-            indentLine(this, j, how);
-          var newRanges = this.doc.sel.ranges;
-          if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
-            replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);
-        } else if (range.head.line > end) {
-          indentLine(this, range.head.line, how, true);
-          end = range.head.line;
-          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
-        }
-      }
-    }),
-
-    // Fetch the parser token for a given character. Useful for hacks
-    // that want to inspect the mode state (say, for completion).
-    getTokenAt: function(pos, precise) {
-      return takeToken(this, pos, precise);
-    },
-
-    getLineTokens: function(line, precise) {
-      return takeToken(this, Pos(line), precise, true);
-    },
-
-    getTokenTypeAt: function(pos) {
-      pos = clipPos(this.doc, pos);
-      var styles = getLineStyles(this, getLine(this.doc, pos.line));
-      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
-      var type;
-      if (ch == 0) type = styles[2];
-      else for (;;) {
-        var mid = (before + after) >> 1;
-        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
-        else if (styles[mid * 2 + 1] < ch) before = mid + 1;
-        else { type = styles[mid * 2 + 2]; break; }
-      }
-      var cut = type ? type.indexOf("cm-overlay ") : -1;
-      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);
-    },
-
-    getModeAt: function(pos) {
-      var mode = this.doc.mode;
-      if (!mode.innerMode) return mode;
-      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
-    },
-
-    getHelper: function(pos, type) {
-      return this.getHelpers(pos, type)[0];
-    },
-
-    getHelpers: function(pos, type) {
-      var found = [];
-      if (!helpers.hasOwnProperty(type)) return found;
-      var help = helpers[type], mode = this.getModeAt(pos);
-      if (typeof mode[type] == "string") {
-        if (help[mode[type]]) found.push(help[mode[type]]);
-      } else if (mode[type]) {
-        for (var i = 0; i < mode[type].length; i++) {
-          var val = help[mode[type][i]];
-          if (val) found.push(val);
-        }
-      } else if (mode.helperType && help[mode.helperType]) {
-        found.push(help[mode.helperType]);
-      } else if (help[mode.name]) {
-        found.push(help[mode.name]);
-      }
-      for (var i = 0; i < help._global.length; i++) {
-        var cur = help._global[i];
-        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
-          found.push(cur.val);
-      }
-      return found;
-    },
-
-    getStateAfter: function(line, precise) {
-      var doc = this.doc;
-      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
-      return getStateBefore(this, line + 1, precise);
-    },
-
-    cursorCoords: function(start, mode) {
-      var pos, range = this.doc.sel.primary();
-      if (start == null) pos = range.head;
-      else if (typeof start == "object") pos = clipPos(this.doc, start);
-      else pos = start ? range.from() : range.to();
-      return cursorCoords(this, pos, mode || "page");
-    },
-
-    charCoords: function(pos, mode) {
-      return charCoords(this, clipPos(this.doc, pos), mode || "page");
-    },
-
-    coordsChar: function(coords, mode) {
-      coords = fromCoordSystem(this, coords, mode || "page");
-      return coordsChar(this, coords.left, coords.top);
-    },
-
-    lineAtHeight: function(height, mode) {
-      height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
-      return lineAtHeight(this.doc, height + this.display.viewOffset);
-    },
-    heightAtLine: function(line, mode) {
-      var end = false, lineObj;
-      if (typeof line == "number") {
-        var last = this.doc.first + this.doc.size - 1;
-        if (line < this.doc.first) line = this.doc.first;
-        else if (line > last) { line = last; end = true; }
-        lineObj = getLine(this.doc, line);
-      } else {
-        lineObj = line;
-      }
-      return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top +
-        (end ? this.doc.height - heightAtLine(lineObj) : 0);
-    },
-
-    defaultTextHeight: function() { return textHeight(this.display); },
-    defaultCharWidth: function() { return charWidth(this.display); },
-
-    setGutterMarker: methodOp(function(line, gutterID, value) {
-      return changeLine(this.doc, line, "gutter", function(line) {
-        var markers = line.gutterMarkers || (line.gutterMarkers = {});
-        markers[gutterID] = value;
-        if (!value && isEmpty(markers)) line.gutterMarkers = null;
-        return true;
-      });
-    }),
-
-    clearGutter: methodOp(function(gutterID) {
-      var cm = this, doc = cm.doc, i = doc.first;
-      doc.iter(function(line) {
-        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
-          line.gutterMarkers[gutterID] = null;
-          regLineChange(cm, i, "gutter");
-          if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
-        }
-        ++i;
-      });
-    }),
-
-    lineInfo: function(line) {
-      if (typeof line == "number") {
-        if (!isLine(this.doc, line)) return null;
-        var n = line;
-        line = getLine(this.doc, line);
-        if (!line) return null;
-      } else {
-        var n = lineNo(line);
-        if (n == null) return null;
-      }
-      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
-              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
-              widgets: line.widgets};
-    },
-
-    getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},
-
-    addWidget: function(pos, node, scroll, vert, horiz) {
-      var display = this.display;
-      pos = cursorCoords(this, clipPos(this.doc, pos));
-      var top = pos.bottom, left = pos.left;
-      node.style.position = "absolute";
-      node.setAttribute("cm-ignore-events", "true");
-      this.display.input.setUneditable(node);
-      display.sizer.appendChild(node);
-      if (vert == "over") {
-        top = pos.top;
-      } else if (vert == "above" || vert == "near") {
-        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
-        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
-        // Default to positioning above (if specified and possible); otherwise default to positioning below
-        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
-          top = pos.top - node.offsetHeight;
-        else if (pos.bottom + node.offsetHeight <= vspace)
-          top = pos.bottom;
-        if (left + node.offsetWidth > hspace)
-          left = hspace - node.offsetWidth;
-      }
-      node.style.top = top + "px";
-      node.style.left = node.style.right = "";
-      if (horiz == "right") {
-        left = display.sizer.clientWidth - node.offsetWidth;
-        node.style.right = "0px";
-      } else {
-        if (horiz == "left") left = 0;
-        else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
-        node.style.left = left + "px";
-      }
-      if (scroll)
-        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
-    },
-
-    triggerOnKeyDown: methodOp(onKeyDown),
-    triggerOnKeyPress: methodOp(onKeyPress),
-    triggerOnKeyUp: onKeyUp,
-
-    execCommand: function(cmd) {
-      if (commands.hasOwnProperty(cmd))
-        return commands[cmd].call(null, this);
-    },
-
-    triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),
-
-    findPosH: function(from, amount, unit, visually) {
-      var dir = 1;
-      if (amount < 0) { dir = -1; amount = -amount; }
-      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
-        cur = findPosH(this.doc, cur, dir, unit, visually);
-        if (cur.hitSide) break;
-      }
-      return cur;
-    },
-
-    moveH: methodOp(function(dir, unit) {
-      var cm = this;
-      cm.extendSelectionsBy(function(range) {
-        if (cm.display.shift || cm.doc.extend || range.empty())
-          return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
-        else
-          return dir < 0 ? range.from() : range.to();
-      }, sel_move);
-    }),
-
-    deleteH: methodOp(function(dir, unit) {
-      var sel = this.doc.sel, doc = this.doc;
-      if (sel.somethingSelected())
-        doc.replaceSelection("", null, "+delete");
-      else
-        deleteNearSelection(this, function(range) {
-          var other = findPosH(doc, range.head, dir, unit, false);
-          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
-        });
-    }),
-
-    findPosV: function(from, amount, unit, goalColumn) {
-      var dir = 1, x = goalColumn;
-      if (amount < 0) { dir = -1; amount = -amount; }
-      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
-        var coords = cursorCoords(this, cur, "div");
-        if (x == null) x = coords.left;
-        else coords.left = x;
-        cur = findPosV(this, coords, dir, unit);
-        if (cur.hitSide) break;
-      }
-      return cur;
-    },
-
-    moveV: methodOp(function(dir, unit) {
-      var cm = this, doc = this.doc, goals = [];
-      var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
-      doc.extendSelectionsBy(function(range) {
-        if (collapse)
-          return dir < 0 ? range.from() : range.to();
-        var headPos = cursorCoords(cm, range.head, "div");
-        if (range.goalColumn != null) headPos.left = range.goalColumn;
-        goals.push(headPos.left);
-        var pos = findPosV(cm, headPos, dir, unit);
-        if (unit == "page" && range == doc.sel.primary())
-          addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
-        return pos;
-      }, sel_move);
-      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
-        doc.sel.ranges[i].goalColumn = goals[i];
-    }),
-
-    // Find the word at the given position (as returned by coordsChar).
-    findWordAt: function(pos) {
-      var doc = this.doc, line = getLine(doc, pos.line).text;
-      var start = pos.ch, end = pos.ch;
-      if (line) {
-        var helper = this.getHelper(pos, "wordChars");
-        if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
-        var startChar = line.charAt(start);
-        var check = isWordChar(startChar, helper)
-          ? function(ch) { return isWordChar(ch, helper); }
-          : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
-          : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
-        while (start > 0 && check(line.charAt(start - 1))) --start;
-        while (end < line.length && check(line.charAt(end))) ++end;
-      }
-      return new Range(Pos(pos.line, start), Pos(pos.line, end));
-    },
-
-    toggleOverwrite: function(value) {
-      if (value != null && value == this.state.overwrite) return;
-      if (this.state.overwrite = !this.state.overwrite)
-        addClass(this.display.cursorDiv, "CodeMirror-overwrite");
-      else
-        rmClass(this.display.cursorDiv, "CodeMirror-overwrite");
-
-      signal(this, "overwriteToggle", this, this.state.overwrite);
-    },
-    hasFocus: function() { return this.display.input.getField() == activeElt(); },
-
-    scrollTo: methodOp(function(x, y) {
-      if (x != null || y != null) resolveScrollToPos(this);
-      if (x != null) this.curOp.scrollLeft = x;
-      if (y != null) this.curOp.scrollTop = y;
-    }),
-    getScrollInfo: function() {
-      var scroller = this.display.scroller;
-      return {left: scroller.scrollLeft, top: scroller.scrollTop,
-              height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
-              width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
-              clientHeight: displayHeight(this), clientWidth: displayWidth(this)};
-    },
-
-    scrollIntoView: methodOp(function(range, margin) {
-      if (range == null) {
-        range = {from: this.doc.sel.primary().head, to: null};
-        if (margin == null) margin = this.options.cursorScrollMargin;
-      } else if (typeof range == "number") {
-        range = {from: Pos(range, 0), to: null};
-      } else if (range.from == null) {
-        range = {from: range, to: null};
-      }
-      if (!range.to) range.to = range.from;
-      range.margin = margin || 0;
-
-      if (range.from.line != null) {
-        resolveScrollToPos(this);
-        this.curOp.scrollToPos = range;
-      } else {
-        var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
-                                      Math.min(range.from.top, range.to.top) - range.margin,
-                                      Math.max(range.from.right, range.to.right),
-                                      Math.max(range.from.bottom, range.to.bottom) + range.margin);
-        this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
-      }
-    }),
-
-    setSize: methodOp(function(width, height) {
-      var cm = this;
-      function interpret(val) {
-        return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
-      }
-      if (width != null) cm.display.wrapper.style.width = interpret(width);
-      if (height != null) cm.display.wrapper.style.height = interpret(height);
-      if (cm.options.lineWrapping) clearLineMeasurementCache(this);
-      var lineNo = cm.display.viewFrom;
-      cm.doc.iter(lineNo, cm.display.viewTo, function(line) {
-        if (line.widgets) for (var i = 0; i < line.widgets.length; i++)
-          if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; }
-        ++lineNo;
-      });
-      cm.curOp.forceUpdate = true;
-      signal(cm, "refresh", this);
-    }),
-
-    operation: function(f){return runInOp(this, f);},
-
-    refresh: methodOp(function() {
-      var oldHeight = this.display.cachedTextHeight;
-      regChange(this);
-      this.curOp.forceUpdate = true;
-      clearCaches(this);
-      this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
-      updateGutterSpace(this);
-      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
-        estimateLineHeights(this);
-      signal(this, "refresh", this);
-    }),
-
-    swapDoc: methodOp(function(doc) {
-      var old = this.doc;
-      old.cm = null;
-      attachDoc(this, doc);
-      clearCaches(this);
-      this.display.input.reset();
-      this.scrollTo(doc.scrollLeft, doc.scrollTop);
-      this.curOp.forceScroll = true;
-      signalLater(this, "swapDoc", this, old);
-      return old;
-    }),
-
-    getInputField: function(){return this.display.input.getField();},
-    getWrapperElement: function(){return this.display.wrapper;},
-    getScrollerElement: function(){return this.display.scroller;},
-    getGutterElement: function(){return this.display.gutters;}
-  };
-  eventMixin(CodeMirror);
-
-  // OPTION DEFAULTS
-
-  // The default configuration options.
-  var defaults = CodeMirror.defaults = {};
-  // Functions to run when options are changed.
-  var optionHandlers = CodeMirror.optionHandlers = {};
-
-  function option(name, deflt, handle, notOnInit) {
-    CodeMirror.defaults[name] = deflt;
-    if (handle) optionHandlers[name] =
-      notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
-  }
-
-  // Passed to option handlers when there is no old value.
-  var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
-
-  // These two are, on init, called from the constructor because they
-  // have to be initialized before the editor can start at all.
-  option("value", "", function(cm, val) {
-    cm.setValue(val);
-  }, true);
-  option("mode", null, function(cm, val) {
-    cm.doc.modeOption = val;
-    loadMode(cm);
-  }, true);
-
-  option("indentUnit", 2, loadMode, true);
-  option("indentWithTabs", false);
-  option("smartIndent", true);
-  option("tabSize", 4, function(cm) {
-    resetModeState(cm);
-    clearCaches(cm);
-    regChange(cm);
-  }, true);
-  option("lineSeparator", null, function(cm, val) {
-    cm.doc.lineSep = val;
-    if (!val) return;
-    var newBreaks = [], lineNo = cm.doc.first;
-    cm.doc.iter(function(line) {
-      for (var pos = 0;;) {
-        var found = line.text.indexOf(val, pos);
-        if (found == -1) break;
-        pos = found + val.length;
-        newBreaks.push(Pos(lineNo, found));
-      }
-      lineNo++;
-    });
-    for (var i = newBreaks.length - 1; i >= 0; i--)
-      replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length))
-  });
-  option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val, old) {
-    cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
-    if (old != CodeMirror.Init) cm.refresh();
-  });
-  option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
-  option("electricChars", true);
-  option("inputStyle", mobile ? "contenteditable" : "textarea", function() {
-    throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME
-  }, true);
-  option("rtlMoveVisually", !windows);
-  option("wholeLineUpdateBefore", true);
-
-  option("theme", "default", function(cm) {
-    themeChanged(cm);
-    guttersChanged(cm);
-  }, true);
-  option("keyMap", "default", function(cm, val, old) {
-    var next = getKeyMap(val);
-    var prev = old != CodeMirror.Init && getKeyMap(old);
-    if (prev && prev.detach) prev.detach(cm, next);
-    if (next.attach) next.attach(cm, prev || null);
-  });
-  option("extraKeys", null);
-
-  option("lineWrapping", false, wrappingChanged, true);
-  option("gutters", [], function(cm) {
-    setGuttersForLineNumbers(cm.options);
-    guttersChanged(cm);
-  }, true);
-  option("fixedGutter", true, function(cm, val) {
-    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
-    cm.refresh();
-  }, true);
-  option("coverGutterNextToScrollbar", false, function(cm) {updateScrollbars(cm);}, true);
-  option("scrollbarStyle", "native", function(cm) {
-    initScrollbars(cm);
-    updateScrollbars(cm);
-    cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
-    cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
-  }, true);
-  option("lineNumbers", false, function(cm) {
-    setGuttersForLineNumbers(cm.options);
-    guttersChanged(cm);
-  }, true);
-  option("firstLineNumber", 1, guttersChanged, true);
-  option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
-  option("showCursorWhenSelecting", false, updateSelection, true);
-
-  option("resetSelectionOnContextMenu", true);
-  option("lineWiseCopyCut", true);
-
-  option("readOnly", false, function(cm, val) {
-    if (val == "nocursor") {
-      onBlur(cm);
-      cm.display.input.blur();
-      cm.display.disabled = true;
-    } else {
-      cm.display.disabled = false;
-    }
-    cm.display.input.readOnlyChanged(val)
-  });
-  option("disableInput", false, function(cm, val) {if (!val) cm.display.input.reset();}, true);
-  option("dragDrop", true, dragDropChanged);
-  option("allowDropFileTypes", null);
-
-  option("cursorBlinkRate", 530);
-  option("cursorScrollMargin", 0);
-  option("cursorHeight", 1, updateSelection, true);
-  option("singleCursorHeightPerLine", true, updateSelection, true);
-  option("workTime", 100);
-  option("workDelay", 100);
-  option("flattenSpans", true, resetModeState, true);
-  option("addModeClass", false, resetModeState, true);
-  option("pollInterval", 100);
-  option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
-  option("historyEventDelay", 1250);
-  option("viewportMargin", 10, function(cm){cm.refresh();}, true);
-  option("maxHighlightLength", 10000, resetModeState, true);
-  option("moveInputWithCursor", true, function(cm, val) {
-    if (!val) cm.display.input.resetPosition();
-  });
-
-  option("tabindex", null, function(cm, val) {
-    cm.display.input.getField().tabIndex = val || "";
-  });
-  option("autofocus", null);
-
-  // MODE DEFINITION AND QUERYING
-
-  // Known modes, by name and by MIME
-  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
-
-  // Extra arguments are stored as the mode's dependencies, which is
-  // used by (legacy) mechanisms like loadmode.js to automatically
-  // load a mode. (Preferred mechanism is the require/define calls.)
-  CodeMirror.defineMode = function(name, mode) {
-    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
-    if (arguments.length > 2)
-      mode.dependencies = Array.prototype.slice.call(arguments, 2);
-    modes[name] = mode;
-  };
-
-  CodeMirror.defineMIME = function(mime, spec) {
-    mimeModes[mime] = spec;
-  };
-
-  // Given a MIME type, a {name, ...options} config object, or a name
-  // string, return a mode config object.
-  CodeMirror.resolveMode = function(spec) {
-    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
-      spec = mimeModes[spec];
-    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
-      var found = mimeModes[spec.name];
-      if (typeof found == "string") found = {name: found};
-      spec = createObj(found, spec);
-      spec.name = found.name;
-    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
-      return CodeMirror.resolveMode("application/xml");
-    }
-    if (typeof spec == "string") return {name: spec};
-    else return spec || {name: "null"};
-  };
-
-  // Given a mode spec (anything that resolveMode accepts), find and
-  // initialize an actual mode object.
-  CodeMirror.getMode = function(options, spec) {
-    var spec = CodeMirror.resolveMode(spec);
-    var mfactory = modes[spec.name];
-    if (!mfactory) return CodeMirror.getMode(options, "text/plain");
-    var modeObj = mfactory(options, spec);
-    if (modeExtensions.hasOwnProperty(spec.name)) {
-      var exts = modeExtensions[spec.name];
-      for (var prop in exts) {
-        if (!exts.hasOwnProperty(prop)) continue;
-        if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
-        modeObj[prop] = exts[prop];
-      }
-    }
-    modeObj.name = spec.name;
-    if (spec.helperType) modeObj.helperType = spec.helperType;
-    if (spec.modeProps) for (var prop in spec.modeProps)
-      modeObj[prop] = spec.modeProps[prop];
-
-    return modeObj;
-  };
-
-  // Minimal default mode.
-  CodeMirror.defineMode("null", function() {
-    return {token: function(stream) {stream.skipToEnd();}};
-  });
-  CodeMirror.defineMIME("text/plain", "null");
-
-  // This can be used to attach properties to mode objects from
-  // outside the actual mode definition.
-  var modeExtensions = CodeMirror.modeExtensions = {};
-  CodeMirror.extendMode = function(mode, properties) {
-    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
-    copyObj(properties, exts);
-  };
-
-  // EXTENSIONS
-
-  CodeMirror.defineExtension = function(name, func) {
-    CodeMirror.prototype[name] = func;
-  };
-  CodeMirror.defineDocExtension = function(name, func) {
-    Doc.prototype[name] = func;
-  };
-  CodeMirror.defineOption = option;
-
-  var initHooks = [];
-  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
-
-  var helpers = CodeMirror.helpers = {};
-  CodeMirror.registerHelper = function(type, name, value) {
-    if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
-    helpers[type][name] = value;
-  };
-  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
-    CodeMirror.registerHelper(type, name, value);
-    helpers[type]._global.push({pred: predicate, val: value});
-  };
-
-  // MODE STATE HANDLING
-
-  // Utility functions for working with state. Exported because nested
-  // modes need to do this for their inner modes.
-
-  var copyState = CodeMirror.copyState = function(mode, state) {
-    if (state === true) return state;
-    if (mode.copyState) return mode.copyState(state);
-    var nstate = {};
-    for (var n in state) {
-      var val = state[n];
-      if (val instanceof Array) val = val.concat([]);
-      nstate[n] = val;
-    }
-    return nstate;
-  };
-
-  var startState = CodeMirror.startState = function(mode, a1, a2) {
-    return mode.startState ? mode.startState(a1, a2) : true;
-  };
-
-  // Given a mode and a state (for that mode), find the inner mode and
-  // state at the position that the state refers to.
-  CodeMirror.innerMode = function(mode, state) {
-    while (mode.innerMode) {
-      var info = mode.innerMode(state);
-      if (!info || info.mode == mode) break;
-      state = info.state;
-      mode = info.mode;
-    }
-    return info || {mode: mode, state: state};
-  };
-
-  // STANDARD COMMANDS
-
-  // Commands are parameter-less actions that can be performed on an
-  // editor, mostly used for keybindings.
-  var commands = CodeMirror.commands = {
-    selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
-    singleSelection: function(cm) {
-      cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
-    },
-    killLine: function(cm) {
-      deleteNearSelection(cm, function(range) {
-        if (range.empty()) {
-          var len = getLine(cm.doc, range.head.line).text.length;
-          if (range.head.ch == len && range.head.line < cm.lastLine())
-            return {from: range.head, to: Pos(range.head.line + 1, 0)};
-          else
-            return {from: range.head, to: Pos(range.head.line, len)};
-        } else {
-          return {from: range.from(), to: range.to()};
-        }
-      });
-    },
-    deleteLine: function(cm) {
-      deleteNearSelection(cm, function(range) {
-        return {from: Pos(range.from().line, 0),
-                to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
-      });
-    },
-    delLineLeft: function(cm) {
-      deleteNearSelection(cm, function(range) {
-        return {from: Pos(range.from().line, 0), to: range.from()};
-      });
-    },
-    delWrappedLineLeft: function(cm) {
-      deleteNearSelection(cm, function(range) {
-        var top = cm.charCoords(range.head, "div").top + 5;
-        var leftPos = cm.coordsChar({left: 0, top: top}, "div");
-        return {from: leftPos, to: range.from()};
-      });
-    },
-    delWrappedLineRight: function(cm) {
-      deleteNearSelection(cm, function(range) {
-        var top = cm.charCoords(range.head, "div").top + 5;
-        var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
-        return {from: range.from(), to: rightPos };
-      });
-    },
-    undo: function(cm) {cm.undo();},
-    redo: function(cm) {cm.redo();},
-    undoSelection: function(cm) {cm.undoSelection();},
-    redoSelection: function(cm) {cm.redoSelection();},
-    goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
-    goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
-    goLineStart: function(cm) {
-      cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); },
-                            {origin: "+move", bias: 1});
-    },
-    goLineStartSmart: function(cm) {
-      cm.extendSelectionsBy(function(range) {
-        return lineStartSmart(cm, range.head);
-      }, {origin: "+move", bias: 1});
-    },
-    goLineEnd: function(cm) {
-      cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); },
-                            {origin: "+move", bias: -1});
-    },
-    goLineRight: function(cm) {
-      cm.extendSelectionsBy(function(range) {
-        var top = cm.charCoords(range.head, "div").top + 5;
-        return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
-      }, sel_move);
-    },
-    goLineLeft: function(cm) {
-      cm.extendSelectionsBy(function(range) {
-        var top = cm.charCoords(range.head, "div").top + 5;
-        return cm.coordsChar({left: 0, top: top}, "div");
-      }, sel_move);
-    },
-    goLineLeftSmart: function(cm) {
-      cm.extendSelectionsBy(function(range) {
-        var top = cm.charCoords(range.head, "div").top + 5;
-        var pos = cm.coordsChar({left: 0, top: top}, "div");
-        if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head);
-        return pos;
-      }, sel_move);
-    },
-    goLineUp: function(cm) {cm.moveV(-1, "line");},
-    goLineDown: function(cm) {cm.moveV(1, "line");},
-    goPageUp: function(cm) {cm.moveV(-1, "page");},
-    goPageDown: function(cm) {cm.moveV(1, "page");},
-    goCharLeft: function(cm) {cm.moveH(-1, "char");},
-    goCharRight: function(cm) {cm.moveH(1, "char");},
-    goColumnLeft: function(cm) {cm.moveH(-1, "column");},
-    goColumnRight: function(cm) {cm.moveH(1, "column");},
-    goWordLeft: function(cm) {cm.moveH(-1, "word");},
-    goGroupRight: function(cm) {cm.moveH(1, "group");},
-    goGroupLeft: function(cm) {cm.moveH(-1, "group");},
-    goWordRight: function(cm) {cm.moveH(1, "word");},
-    delCharBefore: function(cm) {cm.deleteH(-1, "char");},
-    delCharAfter: function(cm) {cm.deleteH(1, "char");},
-    delWordBefore: function(cm) {cm.deleteH(-1, "word");},
-    delWordAfter: function(cm) {cm.deleteH(1, "word");},
-    delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
-    delGroupAfter: function(cm) {cm.deleteH(1, "group");},
-    indentAuto: function(cm) {cm.indentSelection("smart");},
-    indentMore: function(cm) {cm.indentSelection("add");},
-    indentLess: function(cm) {cm.indentSelection("subtract");},
-    insertTab: function(cm) {cm.replaceSelection("\t");},
-    insertSoftTab: function(cm) {
-      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
-      for (var i = 0; i < ranges.length; i++) {
-        var pos = ranges[i].from();
-        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
-        spaces.push(new Array(tabSize - col % tabSize + 1).join(" "));
-      }
-      cm.replaceSelections(spaces);
-    },
-    defaultTab: function(cm) {
-      if (cm.somethingSelected()) cm.indentSelection("add");
-      else cm.execCommand("insertTab");
-    },
-    transposeChars: function(cm) {
-      runInOp(cm, function() {
-        var ranges = cm.listSelections(), newSel = [];
-        for (var i = 0; i < ranges.length; i++) {
-          var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
-          if (line) {
-            if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1);
-            if (cur.ch > 0) {
-              cur = new Pos(cur.line, cur.ch + 1);
-              cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
-                              Pos(cur.line, cur.ch - 2), cur, "+transpose");
-            } else if (cur.line > cm.doc.first) {
-              var prev = getLine(cm.doc, cur.line - 1).text;
-              if (prev)
-                cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
-                                prev.charAt(prev.length - 1),
-                                Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose");
-            }
-          }
-          newSel.push(new Range(cur, cur));
-        }
-        cm.setSelections(newSel);
-      });
-    },
-    newlineAndIndent: function(cm) {
-      runInOp(cm, function() {
-        var len = cm.listSelections().length;
-        for (var i = 0; i < len; i++) {
-          var range = cm.listSelections()[i];
-          cm.replaceRange(cm.doc.lineSeparator(), range.anchor, range.head, "+input");
-          cm.indentLine(range.from().line + 1, null, true);
-        }
-        ensureCursorVisible(cm);
-      });
-    },
-    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
-  };
-
-
-  // STANDARD KEYMAPS
-
-  var keyMap = CodeMirror.keyMap = {};
-
-  keyMap.basic = {
-    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
-    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
-    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
-    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
-    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
-    "Esc": "singleSelection"
-  };
-  // Note that the save and find-related commands aren't defined by
-  // default. User code or addons can define them. Unknown commands
-  // are simply ignored.
-  keyMap.pcDefault = {
-    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
-    "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
-    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
-    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
-    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
-    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
-    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
-    fallthrough: "basic"
-  };
-  // Very basic readline/emacs-style bindings, which are standard on Mac.
-  keyMap.emacsy = {
-    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
-    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
-    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
-    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
-  };
-  keyMap.macDefault = {
-    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
-    "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
-    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
-    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
-    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
-    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
-    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
-    fallthrough: ["basic", "emacsy"]
-  };
-  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
-
-  // KEYMAP DISPATCH
-
-  function normalizeKeyName(name) {
-    var parts = name.split(/-(?!$)/), name = parts[parts.length - 1];
-    var alt, ctrl, shift, cmd;
-    for (var i = 0; i < parts.length - 1; i++) {
-      var mod = parts[i];
-      if (/^(cmd|meta|m)$/i.test(mod)) cmd = true;
-      else if (/^a(lt)?$/i.test(mod)) alt = true;
-      else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true;
-      else if (/^s(hift)$/i.test(mod)) shift = true;
-      else throw new Error("Unrecognized modifier name: " + mod);
-    }
-    if (alt) name = "Alt-" + name;
-    if (ctrl) name = "Ctrl-" + name;
-    if (cmd) name = "Cmd-" + name;
-    if (shift) name = "Shift-" + name;
-    return name;
-  }
-
-  // This is a kludge to keep keymaps mostly working as raw objects
-  // (backwards compatibility) while at the same time support features
-  // like normalization and multi-stroke key bindings. It compiles a
-  // new normalized keymap, and then updates the old object to reflect
-  // this.
-  CodeMirror.normalizeKeyMap = function(keymap) {
-    var copy = {};
-    for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) {
-      var value = keymap[keyname];
-      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue;
-      if (value == "...") { delete keymap[keyname]; continue; }
-
-      var keys = map(keyname.split(" "), normalizeKeyName);
-      for (var i = 0; i < keys.length; i++) {
-        var val, name;
-        if (i == keys.length - 1) {
-          name = keys.join(" ");
-          val = value;
-        } else {
-          name = keys.slice(0, i + 1).join(" ");
-          val = "...";
-        }
-        var prev = copy[name];
-        if (!prev) copy[name] = val;
-        else if (prev != val) throw new Error("Inconsistent bindings for " + name);
-      }
-      delete keymap[keyname];
-    }
-    for (var prop in copy) keymap[prop] = copy[prop];
-    return keymap;
-  };
-
-  var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) {
-    map = getKeyMap(map);
-    var found = map.call ? map.call(key, context) : map[key];
-    if (found === false) return "nothing";
-    if (found === "...") return "multi";
-    if (found != null && handle(found)) return "handled";
-
-    if (map.fallthrough) {
-      if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
-        return lookupKey(key, map.fallthrough, handle, context);
-      for (var i = 0; i < map.fallthrough.length; i++) {
-        var result = lookupKey(key, map.fallthrough[i], handle, context);
-        if (result) return result;
-      }
-    }
-  };
-
-  // Modifier key presses don't count as 'real' key presses for the
-  // purpose of keymap fallthrough.
-  var isModifierKey = CodeMirror.isModifierKey = function(value) {
-    var name = typeof value == "string" ? value : keyNames[value.keyCode];
-    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
-  };
-
-  // Look up the name of a key as indicated by an event object.
-  var keyName = CodeMirror.keyName = function(event, noShift) {
-    if (presto && event.keyCode == 34 && event["char"]) return false;
-    var base = keyNames[event.keyCode], name = base;
-    if (name == null || event.altGraphKey) return false;
-    if (event.altKey && base != "Alt") name = "Alt-" + name;
-    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name;
-    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name;
-    if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name;
-    return name;
-  };
-
-  function getKeyMap(val) {
-    return typeof val == "string" ? keyMap[val] : val;
-  }
-
-  // FROMTEXTAREA
-
-  CodeMirror.fromTextArea = function(textarea, options) {
-    options = options ? copyObj(options) : {};
-    options.value = textarea.value;
-    if (!options.tabindex && textarea.tabIndex)
-      options.tabindex = textarea.tabIndex;
-    if (!options.placeholder && textarea.placeholder)
-      options.placeholder = textarea.placeholder;
-    // Set autofocus to true if this textarea is focused, or if it has
-    // autofocus and no other element is focused.
-    if (options.autofocus == null) {
-      var hasFocus = activeElt();
-      options.autofocus = hasFocus == textarea ||
-        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
-    }
-
-    function save() {textarea.value = cm.getValue();}
-    if (textarea.form) {
-      on(textarea.form, "submit", save);
-      // Deplorable hack to make the submit method do the right thing.
-      if (!options.leaveSubmitMethodAlone) {
-        var form = textarea.form, realSubmit = form.submit;
-        try {
-          var wrappedSubmit = form.submit = function() {
-            save();
-            form.submit = realSubmit;
-            form.submit();
-            form.submit = wrappedSubmit;
-          };
-        } catch(e) {}
-      }
-    }
-
-    options.finishInit = function(cm) {
-      cm.save = save;
-      cm.getTextArea = function() { return textarea; };
-      cm.toTextArea = function() {
-        cm.toTextArea = isNaN; // Prevent this from being ran twice
-        save();
-        textarea.parentNode.removeChild(cm.getWrapperElement());
-        textarea.style.display = "";
-        if (textarea.form) {
-          off(textarea.form, "submit", save);
-          if (typeof textarea.form.submit == "function")
-            textarea.form.submit = realSubmit;
-        }
-      };
-    };
-
-    textarea.style.display = "none";
-    var cm = CodeMirror(function(node) {
-      textarea.parentNode.insertBefore(node, textarea.nextSibling);
-    }, options);
-    return cm;
-  };
-
-  // STRING STREAM
-
-  // Fed to the mode parsers, provides helper functions to make
-  // parsers more succinct.
-
-  var StringStream = CodeMirror.StringStream = function(string, tabSize) {
-    this.pos = this.start = 0;
-    this.string = string;
-    this.tabSize = tabSize || 8;
-    this.lastColumnPos = this.lastColumnValue = 0;
-    this.lineStart = 0;
-  };
-
-  StringStream.prototype = {
-    eol: function() {return this.pos >= this.string.length;},
-    sol: function() {return this.pos == this.lineStart;},
-    peek: function() {return this.string.charAt(this.pos) || undefined;},
-    next: function() {
-      if (this.pos < this.string.length)
-        return this.string.charAt(this.pos++);
-    },
-    eat: function(match) {
-      var ch = this.string.charAt(this.pos);
-      if (typeof match == "string") var ok = ch == match;
-      else var ok = ch && (match.test ? match.test(ch) : match(ch));
-      if (ok) {++this.pos; return ch;}
-    },
-    eatWhile: function(match) {
-      var start = this.pos;
-      while (this.eat(match)){}
-      return this.pos > start;
-    },
-    eatSpace: function() {
-      var start = this.pos;
-      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
-      return this.pos > start;
-    },
-    skipToEnd: function() {this.pos = this.string.length;},
-    skipTo: function(ch) {
-      var found = this.string.indexOf(ch, this.pos);
-      if (found > -1) {this.pos = found; return true;}
-    },
-    backUp: function(n) {this.pos -= n;},
-    column: function() {
-      if (this.lastColumnPos < this.start) {
-        this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
-        this.lastColumnPos = this.start;
-      }
-      return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
-    },
-    indentation: function() {
-      return countColumn(this.string, null, this.tabSize) -
-        (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
-    },
-    match: function(pattern, consume, caseInsensitive) {
-      if (typeof pattern == "string") {
-        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
-        var substr = this.string.substr(this.pos, pattern.length);
-        if (cased(substr) == cased(pattern)) {
-          if (consume !== false) this.pos += pattern.length;
-          return true;
-        }
-      } else {
-        var match = this.string.slice(this.pos).match(pattern);
-        if (match && match.index > 0) return null;
-        if (match && consume !== false) this.pos += match[0].length;
-        return match;
-      }
-    },
-    current: function(){return this.string.slice(this.start, this.pos);},
-    hideFirstChars: function(n, inner) {
-      this.lineStart += n;
-      try { return inner(); }
-      finally { this.lineStart -= n; }
-    }
-  };
-
-  // TEXTMARKERS
-
-  // Created with markText and setBookmark methods. A TextMarker is a
-  // handle that can be used to clear or find a marked position in the
-  // document. Line objects hold arrays (markedSpans) containing
-  // {from, to, marker} object pointing to such marker objects, and
-  // indicating that such a marker is present on that line. Multiple
-  // lines may point to the same marker when it spans across lines.
-  // The spans will have null for their from/to properties when the
-  // marker continues beyond the start/end of the line. Markers have
-  // links back to the lines they currently touch.
-
-  var nextMarkerId = 0;
-
-  var TextMarker = CodeMirror.TextMarker = function(doc, type) {
-    this.lines = [];
-    this.type = type;
-    this.doc = doc;
-    this.id = ++nextMarkerId;
-  };
-  eventMixin(TextMarker);
-
-  // Clear the marker.
-  TextMarker.prototype.clear = function() {
-    if (this.explicitlyCleared) return;
-    var cm = this.doc.cm, withOp = cm && !cm.curOp;
-    if (withOp) startOperation(cm);
-    if (hasHandler(this, "clear")) {
-      var found = this.find();
-      if (found) signalLater(this, "clear", found.from, found.to);
-    }
-    var min = null, max = null;
-    for (var i = 0; i < this.lines.length; ++i) {
-      var line = this.lines[i];
-      var span = getMarkedSpanFor(line.markedSpans, this);
-      if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
-      else if (cm) {
-        if (span.to != null) max = lineNo(line);
-        if (span.from != null) min = lineNo(line);
-      }
-      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
-      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
-        updateLineHeight(line, textHeight(cm.display));
-    }
-    if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
-      var visual = visualLine(this.lines[i]), len = lineLength(visual);
-      if (len > cm.display.maxLineLength) {
-        cm.display.maxLine = visual;
-        cm.display.maxLineLength = len;
-        cm.display.maxLineChanged = true;
-      }
-    }
-
-    if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);
-    this.lines.length = 0;
-    this.explicitlyCleared = true;
-    if (this.atomic && this.doc.cantEdit) {
-      this.doc.cantEdit = false;
-      if (cm) reCheckSelection(cm.doc);
-    }
-    if (cm) signalLater(cm, "markerCleared", cm, this);
-    if (withOp) endOperation(cm);
-    if (this.parent) this.parent.clear();
-  };
-
-  // Find the position of the marker in the document. Returns a {from,
-  // to} object by default. Side can be passed to get a specific side
-  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
-  // Pos objects returned contain a line object, rather than a line
-  // number (used to prevent looking up the same line twice).
-  TextMarker.prototype.find = function(side, lineObj) {
-    if (side == null && this.type == "bookmark") side = 1;
-    var from, to;
-    for (var i = 0; i < this.lines.length; ++i) {
-      var line = this.lines[i];
-      var span = getMarkedSpanFor(line.markedSpans, this);
-      if (span.from != null) {
-        from = Pos(lineObj ? line : lineNo(line), span.from);
-        if (side == -1) return from;
-      }
-      if (span.to != null) {
-        to = Pos(lineObj ? line : lineNo(line), span.to);
-        if (side == 1) return to;
-      }
-    }
-    return from && {from: from, to: to};
-  };
-
-  // Signals that the marker's widget changed, and surrounding layout
-  // should be recomputed.
-  TextMarker.prototype.changed = function() {
-    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
-    if (!pos || !cm) return;
-    runInOp(cm, function() {
-      var line = pos.line, lineN = lineNo(pos.line);
-      var view = findViewForLine(cm, lineN);
-      if (view) {
-        clearLineMeasurementCacheFor(view);
-        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
-      }
-      cm.curOp.updateMaxLine = true;
-      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
-        var oldHeight = widget.height;
-        widget.height = null;
-        var dHeight = widgetHeight(widget) - oldHeight;
-        if (dHeight)
-          updateLineHeight(line, line.height + dHeight);
-      }
-    });
-  };
-
-  TextMarker.prototype.attachLine = function(line) {
-    if (!this.lines.length && this.doc.cm) {
-      var op = this.doc.cm.curOp;
-      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
-        (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
-    }
-    this.lines.push(line);
-  };
-  TextMarker.prototype.detachLine = function(line) {
-    this.lines.splice(indexOf(this.lines, line), 1);
-    if (!this.lines.length && this.doc.cm) {
-      var op = this.doc.cm.curOp;
-      (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
-    }
-  };
-
-  // Collapsed markers have unique ids, in order to be able to order
-  // them, which is needed for uniquely determining an outer marker
-  // when they overlap (they may nest, but not partially overlap).
-  var nextMarkerId = 0;
-
-  // Create a marker, wire it up to the right lines, and
-  function markText(doc, from, to, options, type) {
-    // Shared markers (across linked documents) are handled separately
-    // (markTextShared will call out to this again, once per
-    // document).
-    if (options && options.shared) return markTextShared(doc, from, to, options, type);
-    // Ensure we are in an operation.
-    if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
-
-    var marker = new TextMarker(doc, type), diff = cmp(from, to);
-    if (options) copyObj(options, marker, false);
-    // Don't connect empty markers unless clearWhenEmpty is false
-    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
-      return marker;
-    if (marker.replacedWith) {
-      // Showing up as a widget implies collapsed (widget replaces text)
-      marker.collapsed = true;
-      marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
-      if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true");
-      if (options.insertLeft) marker.widgetNode.insertLeft = true;
-    }
-    if (marker.collapsed) {
-      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
-          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
-        throw new Error("Inserting collapsed marker partially overlapping an existing one");
-      sawCollapsedSpans = true;
-    }
-
-    if (marker.addToHistory)
-      addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);
-
-    var curLine = from.line, cm = doc.cm, updateMaxLine;
-    doc.iter(curLine, to.line + 1, function(line) {
-      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
-        updateMaxLine = true;
-      if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
-      addMarkedSpan(line, new MarkedSpan(marker,
-                                         curLine == from.line ? from.ch : null,
-                                         curLine == to.line ? to.ch : null));
-      ++curLine;
-    });
-    // lineIsHidden depends on the presence of the spans, so needs a second pass
-    if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
-      if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
-    });
-
-    if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });
-
-    if (marker.readOnly) {
-      sawReadOnlySpans = true;
-      if (doc.history.done.length || doc.history.undone.length)
-        doc.clearHistory();
-    }
-    if (marker.collapsed) {
-      marker.id = ++nextMarkerId;
-      marker.atomic = true;
-    }
-    if (cm) {
-      // Sync editor state
-      if (updateMaxLine) cm.curOp.updateMaxLine = true;
-      if (marker.collapsed)
-        regChange(cm, from.line, to.line + 1);
-      else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)
-        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
-      if (marker.atomic) reCheckSelection(cm.doc);
-      signalLater(cm, "markerAdded", cm, marker);
-    }
-    return marker;
-  }
-
-  // SHARED TEXTMARKERS
-
-  // A shared marker spans multiple linked documents. It is
-  // implemented as a meta-marker-object controlling multiple normal
-  // markers.
-  var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
-    this.markers = markers;
-    this.primary = primary;
-    for (var i = 0; i < markers.length; ++i)
-      markers[i].parent = this;
-  };
-  eventMixin(SharedTextMarker);
-
-  SharedTextMarker.prototype.clear = function() {
-    if (this.explicitlyCleared) return;
-    this.explicitlyCleared = true;
-    for (var i = 0; i < this.markers.length; ++i)
-      this.markers[i].clear();
-    signalLater(this, "clear");
-  };
-  SharedTextMarker.prototype.find = function(side, lineObj) {
-    return this.primary.find(side, lineObj);
-  };
-
-  function markTextShared(doc, from, to, options, type) {
-    options = copyObj(options);
-    options.shared = false;
-    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
-    var widget = options.widgetNode;
-    linkedDocs(doc, function(doc) {
-      if (widget) options.widgetNode = widget.cloneNode(true);
-      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
-      for (var i = 0; i < doc.linked.length; ++i)
-        if (doc.linked[i].isParent) return;
-      primary = lst(markers);
-    });
-    return new SharedTextMarker(markers, primary);
-  }
-
-  function findSharedMarkers(doc) {
-    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),
-                         function(m) { return m.parent; });
-  }
-
-  function copySharedMarkers(doc, markers) {
-    for (var i = 0; i < markers.length; i++) {
-      var marker = markers[i], pos = marker.find();
-      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
-      if (cmp(mFrom, mTo)) {
-        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
-        marker.markers.push(subMark);
-        subMark.parent = marker;
-      }
-    }
-  }
-
-  function detachSharedMarkers(markers) {
-    for (var i = 0; i < markers.length; i++) {
-      var marker = markers[i], linked = [marker.primary.doc];;
-      linkedDocs(marker.primary.doc, function(d) { linked.push(d); });
-      for (var j = 0; j < marker.markers.length; j++) {
-        var subMarker = marker.markers[j];
-        if (indexOf(linked, subMarker.doc) == -1) {
-          subMarker.parent = null;
-          marker.markers.splice(j--, 1);
-        }
-      }
-    }
-  }
-
-  // TEXTMARKER SPANS
-
-  function MarkedSpan(marker, from, to) {
-    this.marker = marker;
-    this.from = from; this.to = to;
-  }
-
-  // Search an array of spans for a span matching the given marker.
-  function getMarkedSpanFor(spans, marker) {
-    if (spans) for (var i = 0; i < spans.length; ++i) {
-      var span = spans[i];
-      if (span.marker == marker) return span;
-    }
-  }
-  // Remove a span from an array, returning undefined if no spans are
-  // left (we don't store arrays for lines without spans).
-  function removeMarkedSpan(spans, span) {
-    for (var r, i = 0; i < spans.length; ++i)
-      if (spans[i] != span) (r || (r = [])).push(spans[i]);
-    return r;
-  }
-  // Add a span to a line.
-  function addMarkedSpan(line, span) {
-    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
-    span.marker.attachLine(line);
-  }
-
-  // Used for the algorithm that adjusts markers for a change in the
-  // document. These functions cut an array of spans at a given
-  // character position, returning an array of remaining chunks (or
-  // undefined if nothing remains).
-  function markedSpansBefore(old, startCh, isInsert) {
-    if (old) for (var i = 0, nw; i < old.length; ++i) {
-      var span = old[i], marker = span.marker;
-      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
-      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
-        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
-        (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
-      }
-    }
-    return nw;
-  }
-  function markedSpansAfter(old, endCh, isInsert) {
-    if (old) for (var i = 0, nw; i < old.length; ++i) {
-      var span = old[i], marker = span.marker;
-      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
-      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
-        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
-        (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
-                                              span.to == null ? null : span.to - endCh));
-      }
-    }
-    return nw;
-  }
-
-  // Given a change object, compute the new set of marker spans that
-  // cover the line in which the change took place. Removes spans
-  // entirely within the change, reconnects spans belonging to the
-  // same marker that appear on both sides of the change, and cuts off
-  // spans partially within the change. Returns an array of span
-  // arrays with one element for each line in (after) the change.
-  function stretchSpansOverChange(doc, change) {
-    if (change.full) return null;
-    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
-    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
-    if (!oldFirst && !oldLast) return null;
-
-    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
-    // Get the spans that 'stick out' on both sides
-    var first = markedSpansBefore(oldFirst, startCh, isInsert);
-    var last = markedSpansAfter(oldLast, endCh, isInsert);
-
-    // Next, merge those two ends
-    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
-    if (first) {
-      // Fix up .to properties of first
-      for (var i = 0; i < first.length; ++i) {
-        var span = first[i];
-        if (span.to == null) {
-          var found = getMarkedSpanFor(last, span.marker);
-          if (!found) span.to = startCh;
-          else if (sameLine) span.to = found.to == null ? null : found.to + offset;
-        }
-      }
-    }
-    if (last) {
-      // Fix up .from in last (or move them into first in case of sameLine)
-      for (var i = 0; i < last.length; ++i) {
-        var span = last[i];
-        if (span.to != null) span.to += offset;
-        if (span.from == null) {
-          var found = getMarkedSpanFor(first, span.marker);
-          if (!found) {
-            span.from = offset;
-            if (sameLine) (first || (first = [])).push(span);
-          }
-        } else {
-          span.from += offset;
-          if (sameLine) (first || (first = [])).push(span);
-        }
-      }
-    }
-    // Make sure we didn't create any zero-length spans
-    if (first) first = clearEmptySpans(first);
-    if (last && last != first) last = clearEmptySpans(last);
-
-    var newMarkers = [first];
-    if (!sameLine) {
-      // Fill gap with whole-line-spans
-      var gap = change.text.length - 2, gapMarkers;
-      if (gap > 0 && first)
-        for (var i = 0; i < first.length; ++i)
-          if (first[i].to == null)
-            (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));
-      for (var i = 0; i < gap; ++i)
-        newMarkers.push(gapMarkers);
-      newMarkers.push(last);
-    }
-    return newMarkers;
-  }
-
-  // Remove spans that are empty and don't have a clearWhenEmpty
-  // option of false.
-  function clearEmptySpans(spans) {
-    for (var i = 0; i < spans.length; ++i) {
-      var span = spans[i];
-      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
-        spans.splice(i--, 1);
-    }
-    if (!spans.length) return null;
-    return spans;
-  }
-
-  // Used for un/re-doing changes from the history. Combines the
-  // result of computing the existing spans with the set of spans that
-  // existed in the history (so that deleting around a span and then
-  // undoing brings back the span).
-  function mergeOldSpans(doc, change) {
-    var old = getOldSpans(doc, change);
-    var stretched = stretchSpansOverChange(doc, change);
-    if (!old) return stretched;
-    if (!stretched) return old;
-
-    for (var i = 0; i < old.length; ++i) {
-      var oldCur = old[i], stretchCur = stretched[i];
-      if (oldCur && stretchCur) {
-        spans: for (var j = 0; j < stretchCur.length; ++j) {
-          var span = stretchCur[j];
-          for (var k = 0; k < oldCur.length; ++k)
-            if (oldCur[k].marker == span.marker) continue spans;
-          oldCur.push(span);
-        }
-      } else if (stretchCur) {
-        old[i] = stretchCur;
-      }
-    }
-    return old;
-  }
-
-  // Used to 'clip' out readOnly ranges when making a change.
-  function removeReadOnlyRanges(doc, from, to) {
-    var markers = null;
-    doc.iter(from.line, to.line + 1, function(line) {
-      if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
-        var mark = line.markedSpans[i].marker;
-        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
-          (markers || (markers = [])).push(mark);
-      }
-    });
-    if (!markers) return null;
-    var parts = [{from: from, to: to}];
-    for (var i = 0; i < markers.length; ++i) {
-      var mk = markers[i], m = mk.find(0);
-      for (var j = 0; j < parts.length; ++j) {
-        var p = parts[j];
-        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;
-        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
-        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
-          newParts.push({from: p.from, to: m.from});
-        if (dto > 0 || !mk.inclusiveRight && !dto)
-          newParts.push({from: m.to, to: p.to});
-        parts.splice.apply(parts, newParts);
-        j += newParts.length - 1;
-      }
-    }
-    return parts;
-  }
-
-  // Connect or disconnect spans from a line.
-  function detachMarkedSpans(line) {
-    var spans = line.markedSpans;
-    if (!spans) return;
-    for (var i = 0; i < spans.length; ++i)
-      spans[i].marker.detachLine(line);
-    line.markedSpans = null;
-  }
-  function attachMarkedSpans(line, spans) {
-    if (!spans) return;
-    for (var i = 0; i < spans.length; ++i)
-      spans[i].marker.attachLine(line);
-    line.markedSpans = spans;
-  }
-
-  // Helpers used when computing which overlapping collapsed span
-  // counts as the larger one.
-  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
-  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }
-
-  // Returns a number indicating which of two overlapping collapsed
-  // spans is larger (and thus includes the other). Falls back to
-  // comparing ids when the spans cover exactly the same range.
-  function compareCollapsedMarkers(a, b) {
-    var lenDiff = a.lines.length - b.lines.length;
-    if (lenDiff != 0) return lenDiff;
-    var aPos = a.find(), bPos = b.find();
-    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
-    if (fromCmp) return -fromCmp;
-    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
-    if (toCmp) return toCmp;
-    return b.id - a.id;
-  }
-
-  // Find out whether a line ends or starts in a collapsed span. If
-  // so, return the marker for that span.
-  function collapsedSpanAtSide(line, start) {
-    var sps = sawCollapsedSpans && line.markedSpans, found;
-    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
-      sp = sps[i];
-      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
-          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
-        found = sp.marker;
-    }
-    return found;
-  }
-  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
-  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }
-
-  // Test whether there exists a collapsed span that partially
-  // overlaps (covers the start or end, but not both) of a new span.
-  // Such overlap is not allowed.
-  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
-    var line = getLine(doc, lineNo);
-    var sps = sawCollapsedSpans && line.markedSpans;
-    if (sps) for (var i = 0; i < sps.length; ++i) {
-      var sp = sps[i];
-      if (!sp.marker.collapsed) continue;
-      var found = sp.marker.find(0);
-      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
-      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
-      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
-      if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) ||
-          fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight)))
-        return true;
-    }
-  }
-
-  // A visual line is a line as drawn on the screen. Folding, for
-  // example, can cause multiple logical lines to appear on the same
-  // visual line. This finds the start of the visual line that the
-  // given line is part of (usually that is the line itself).
-  function visualLine(line) {
-    var merged;
-    while (merged = collapsedSpanAtStart(line))
-      line = merged.find(-1, true).line;
-    return line;
-  }
-
-  // Returns an array of logical lines that continue the visual line
-  // started by the argument, or undefined if there are no such lines.
-  function visualLineContinued(line) {
-    var merged, lines;
-    while (merged = collapsedSpanAtEnd(line)) {
-      line = merged.find(1, true).line;
-      (lines || (lines = [])).push(line);
-    }
-    return lines;
-  }
-
-  // Get the line number of the start of the visual line that the
-  // given line number is part of.
-  function visualLineNo(doc, lineN) {
-    var line = getLine(doc, lineN), vis = visualLine(line);
-    if (line == vis) return lineN;
-    return lineNo(vis);
-  }
-  // Get the line number of the start of the next visual line after
-  // the given line.
-  function visualLineEndNo(doc, lineN) {
-    if (lineN > doc.lastLine()) return lineN;
-    var line = getLine(doc, lineN), merged;
-    if (!lineIsHidden(doc, line)) return lineN;
-    while (merged = collapsedSpanAtEnd(line))
-      line = merged.find(1, true).line;
-    return lineNo(line) + 1;
-  }
-
-  // Compute whether a line is hidden. Lines count as hidden when they
-  // are part of a visual line that starts with another line, or when
-  // they are entirely covered by collapsed, non-widget span.
-  function lineIsHidden(doc, line) {
-    var sps = sawCollapsedSpans && line.markedSpans;
-    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
-      sp = sps[i];
-      if (!sp.marker.collapsed) continue;
-      if (sp.from == null) return true;
-      if (sp.marker.widgetNode) continue;
-      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
-        return true;
-    }
-  }
-  function lineIsHiddenInner(doc, line, span) {
-    if (span.to == null) {
-      var end = span.marker.find(1, true);
-      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));
-    }
-    if (span.marker.inclusiveRight && span.to == line.text.length)
-      return true;
-    for (var sp, i = 0; i < line.markedSpans.length; ++i) {
-      sp = line.markedSpans[i];
-      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
-          (sp.to == null || sp.to != span.from) &&
-          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
-          lineIsHiddenInner(doc, line, sp)) return true;
-    }
-  }
-
-  // LINE WIDGETS
-
-  // Line widgets are block elements displayed above or below a line.
-
-  var LineWidget = CodeMirror.LineWidget = function(doc, node, options) {
-    if (options) for (var opt in options) if (options.hasOwnProperty(opt))
-      this[opt] = options[opt];
-    this.doc = doc;
-    this.node = node;
-  };
-  eventMixin(LineWidget);
-
-  function adjustScrollWhenAboveVisible(cm, line, diff) {
-    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
-      addToScrollPos(cm, null, diff);
-  }
-
-  LineWidget.prototype.clear = function() {
-    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
-    if (no == null || !ws) return;
-    for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
-    if (!ws.length) line.widgets = null;
-    var height = widgetHeight(this);
-    updateLineHeight(line, Math.max(0, line.height - height));
-    if (cm) runInOp(cm, function() {
-      adjustScrollWhenAboveVisible(cm, line, -height);
-      regLineChange(cm, no, "widget");
-    });
-  };
-  LineWidget.prototype.changed = function() {
-    var oldH = this.height, cm = this.doc.cm, line = this.line;
-    this.height = null;
-    var diff = widgetHeight(this) - oldH;
-    if (!diff) return;
-    updateLineHeight(line, line.height + diff);
-    if (cm) runInOp(cm, function() {
-      cm.curOp.forceUpdate = true;
-      adjustScrollWhenAboveVisible(cm, line, diff);
-    });
-  };
-
-  function widgetHeight(widget) {
-    if (widget.height != null) return widget.height;
-    var cm = widget.doc.cm;
-    if (!cm) return 0;
-    if (!contains(document.body, widget.node)) {
-      var parentStyle = "position: relative;";
-      if (widget.coverGutter)
-        parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;";
-      if (widget.noHScroll)
-        parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;";
-      removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
-    }
-    return widget.height = widget.node.offsetHeight;
-  }
-
-  function addLineWidget(doc, handle, node, options) {
-    var widget = new LineWidget(doc, node, options);
-    var cm = doc.cm;
-    if (cm && widget.noHScroll) cm.display.alignWidgets = true;
-    changeLine(doc, handle, "widget", function(line) {
-      var widgets = line.widgets || (line.widgets = []);
-      if (widget.insertAt == null) widgets.push(widget);
-      else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
-      widget.line = line;
-      if (cm && !lineIsHidden(doc, line)) {
-        var aboveVisible = heightAtLine(line) < doc.scrollTop;
-        updateLineHeight(line, line.height + widgetHeight(widget));
-        if (aboveVisible) addToScrollPos(cm, null, widget.height);
-        cm.curOp.forceUpdate = true;
-      }
-      return true;
-    });
-    return widget;
-  }
-
-  // LINE DATA STRUCTURE
-
-  // Line objects. These hold state related to a line, including
-  // highlighting info (the styles array).
-  var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
-    this.text = text;
-    attachMarkedSpans(this, markedSpans);
-    this.height = estimateHeight ? estimateHeight(this) : 1;
-  };
-  eventMixin(Line);
-  Line.prototype.lineNo = function() { return lineNo(this); };
-
-  // Change the content (text, markers) of a line. Automatically
-  // invalidates cached information and tries to re-estimate the
-  // line's height.
-  function updateLine(line, text, markedSpans, estimateHeight) {
-    line.text = text;
-    if (line.stateAfter) line.stateAfter = null;
-    if (line.styles) line.styles = null;
-    if (line.order != null) line.order = null;
-    detachMarkedSpans(line);
-    attachMarkedSpans(line, markedSpans);
-    var estHeight = estimateHeight ? estimateHeight(line) : 1;
-    if (estHeight != line.height) updateLineHeight(line, estHeight);
-  }
-
-  // Detach a line from the document tree and its markers.
-  function cleanUpLine(line) {
-    line.parent = null;
-    detachMarkedSpans(line);
-  }
-
-  function extractLineClasses(type, output) {
-    if (type) for (;;) {
-      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
-      if (!lineClass) break;
-      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
-      var prop = lineClass[1] ? "bgClass" : "textClass";
-      if (output[prop] == null)
-        output[prop] = lineClass[2];
-      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
-        output[prop] += " " + lineClass[2];
-    }
-    return type;
-  }
-
-  function callBlankLine(mode, state) {
-    if (mode.blankLine) return mode.blankLine(state);
-    if (!mode.innerMode) return;
-    var inner = CodeMirror.innerMode(mode, state);
-    if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);
-  }
-
-  function readToken(mode, stream, state, inner) {
-    for (var i = 0; i < 10; i++) {
-      if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode;
-      var style = mode.token(stream, state);
-      if (stream.pos > stream.start) return style;
-    }
-    throw new Error("Mode " + mode.name + " failed to advance stream.");
-  }
-
-  // Utility for getTokenAt and getLineTokens
-  function takeToken(cm, pos, precise, asArray) {
-    function getObj(copy) {
-      return {start: stream.start, end: stream.pos,
-              string: stream.current(),
-              type: style || null,
-              state: copy ? copyState(doc.mode, state) : state};
-    }
-
-    var doc = cm.doc, mode = doc.mode, style;
-    pos = clipPos(doc, pos);
-    var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise);
-    var stream = new StringStream(line.text, cm.options.tabSize), tokens;
-    if (asArray) tokens = [];
-    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
-      stream.start = stream.pos;
-      style = readToken(mode, stream, state);
-      if (asArray) tokens.push(getObj(true));
-    }
-    return asArray ? tokens : getObj();
-  }
-
-  // Run the given mode's parser over a line, calling f for each token.
-  function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
-    var flattenSpans = mode.flattenSpans;
-    if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
-    var curStart = 0, curStyle = null;
-    var stream = new StringStream(text, cm.options.tabSize), style;
-    var inner = cm.options.addModeClass && [null];
-    if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
-    while (!stream.eol()) {
-      if (stream.pos > cm.options.maxHighlightLength) {
-        flattenSpans = false;
-        if (forceToEnd) processLine(cm, text, state, stream.pos);
-        stream.pos = text.length;
-        style = null;
-      } else {
-        style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses);
-      }
-      if (inner) {
-        var mName = inner[0].name;
-        if (mName) style = "m-" + (style ? mName + " " + style : mName);
-      }
-      if (!flattenSpans || curStyle != style) {
-        while (curStart < stream.start) {
-          curStart = Math.min(stream.start, curStart + 50000);
-          f(curStart, curStyle);
-        }
-        curStyle = style;
-      }
-      stream.start = stream.pos;
-    }
-    while (curStart < stream.pos) {
-      // Webkit seems to refuse to render text nodes longer than 57444 characters
-      var pos = Math.min(stream.pos, curStart + 50000);
-      f(pos, curStyle);
-      curStart = pos;
-    }
-  }
-
-  // Compute a style array (an array starting with a mode generation
-  // -- for invalidation -- followed by pairs of end positions and
-  // style strings), which is used to highlight the tokens on the
-  // line.
-  function highlightLine(cm, line, state, forceToEnd) {
-    // A styles array always starts with a number identifying the
-    // mode/overlays that it is based on (for easy invalidation).
-    var st = [cm.state.modeGen], lineClasses = {};
-    // Compute the base array of styles
-    runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
-      st.push(end, style);
-    }, lineClasses, forceToEnd);
-
-    // Run overlays, adjust style array.
-    for (var o = 0; o < cm.state.overlays.length; ++o) {
-      var overlay = cm.state.overlays[o], i = 1, at = 0;
-      runMode(cm, line.text, overlay.mode, true, function(end, style) {
-        var start = i;
-        // Ensure there's a token end at the current position, and that i points at it
-        while (at < end) {
-          var i_end = st[i];
-          if (i_end > end)
-            st.splice(i, 1, end, st[i+1], i_end);
-          i += 2;
-          at = Math.min(end, i_end);
-        }
-        if (!style) return;
-        if (overlay.opaque) {
-          st.splice(start, i - start, end, "cm-overlay " + style);
-          i = start + 2;
-        } else {
-          for (; start < i; start += 2) {
-            var cur = st[start+1];
-            st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
-          }
-        }
-      }, lineClasses);
-    }
-
-    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};
-  }
-
-  function getLineStyles(cm, line, updateFrontier) {
-    if (!line.styles || line.styles[0] != cm.state.modeGen) {
-      var state = getStateBefore(cm, lineNo(line));
-      var result = highlightLine(cm, line, line.text.length > cm.options.maxHighlightLength ? copyState(cm.doc.mode, state) : state);
-      line.stateAfter = state;
-      line.styles = result.styles;
-      if (result.classes) line.styleClasses = result.classes;
-      else if (line.styleClasses) line.styleClasses = null;
-      if (updateFrontier === cm.doc.frontier) cm.doc.frontier++;
-    }
-    return line.styles;
-  }
-
-  // Lightweight form of highlight -- proceed over this line and
-  // update state, but don't save a style array. Used for lines that
-  // aren't currently visible.
-  function processLine(cm, text, state, startAt) {
-    var mode = cm.doc.mode;
-    var stream = new StringStream(text, cm.options.tabSize);
-    stream.start = stream.pos = startAt || 0;
-    if (text == "") callBlankLine(mode, state);
-    while (!stream.eol()) {
-      readToken(mode, stream, state);
-      stream.start = stream.pos;
-    }
-  }
-
-  // Convert a style as returned by a mode (either null, or a string
-  // containing one or more styles) to a CSS style. This is cached,
-  // and also looks for line-wide styles.
-  var styleToClassCache = {}, styleToClassCacheWithMode = {};
-  function interpretTokenStyle(style, options) {
-    if (!style || /^\s*$/.test(style)) return null;
-    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
-    return cache[style] ||
-      (cache[style] = style.replace(/\S+/g, "cm-$&"));
-  }
-
-  // Render the DOM representation of the text of a line. Also builds
-  // up a 'line map', which points at the DOM nodes that represent
-  // specific stretches of text, and is used by the measuring code.
-  // The returned object contains the DOM node, this map, and
-  // information about line-wide styles that were set by the mode.
-  function buildLineContent(cm, lineView) {
-    // The padding-right forces the element to have a 'border', which
-    // is needed on Webkit to be able to get line-level bounding
-    // rectangles for it (in measureChar).
-    var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
-    var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
-                   col: 0, pos: 0, cm: cm,
-                   splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")};
-    lineView.measure = {};
-
-    // Iterate over the logical lines that make up this visual line.
-    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
-      var line = i ? lineView.rest[i - 1] : lineView.line, order;
-      builder.pos = 0;
-      builder.addToken = buildToken;
-      // Optionally wire in some hacks into the token-rendering
-      // algorithm, to deal with browser quirks.
-      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
-        builder.addToken = buildTokenBadBidi(builder.addToken, order);
-      builder.map = [];
-      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
-      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
-      if (line.styleClasses) {
-        if (line.styleClasses.bgClass)
-          builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "");
-        if (line.styleClasses.textClass)
-          builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "");
-      }
-
-      // Ensure at least a single node is present, for measuring.
-      if (builder.map.length == 0)
-        builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));
-
-      // Store the map and a cache object for the current logical line
-      if (i == 0) {
-        lineView.measure.map = builder.map;
-        lineView.measure.cache = {};
-      } else {
-        (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
-        (lineView.measure.caches || (lineView.measure.caches = [])).push({});
-      }
-    }
-
-    // See issue #2901
-    if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className))
-      builder.content.className = "cm-tab-wrap-hack";
-
-    signal(cm, "renderLine", cm, lineView.line, builder.pre);
-    if (builder.pre.className)
-      builder.textClass = joinClasses(builder.pre.className, builder.textClass || "");
-
-    return builder;
-  }
-
-  function defaultSpecialCharPlaceholder(ch) {
-    var token = elt("span", "\u2022", "cm-invalidchar");
-    token.title = "\\u" + ch.charCodeAt(0).toString(16);
-    token.setAttribute("aria-label", token.title);
-    return token;
-  }
-
-  // Build up the DOM representation for a single token, and add it to
-  // the line map. Takes care to render special characters separately.
-  function buildToken(builder, text, style, startStyle, endStyle, title, css) {
-    if (!text) return;
-    var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text;
-    var special = builder.cm.state.specialChars, mustWrap = false;
-    if (!special.test(text)) {
-      builder.col += text.length;
-      var content = document.createTextNode(displayText);
-      builder.map.push(builder.pos, builder.pos + text.length, content);
-      if (ie && ie_version < 9) mustWrap = true;
-      builder.pos += text.length;
-    } else {
-      var content = document.createDocumentFragment(), pos = 0;
-      while (true) {
-        special.lastIndex = pos;
-        var m = special.exec(text);
-        var skipped = m ? m.index - pos : text.length - pos;
-        if (skipped) {
-          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
-          if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
-          else content.appendChild(txt);
-          builder.map.push(builder.pos, builder.pos + skipped, txt);
-          builder.col += skipped;
-          builder.pos += skipped;
-        }
-        if (!m) break;
-        pos += skipped + 1;
-        if (m[0] == "\t") {
-          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
-          var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
-          txt.setAttribute("role", "presentation");
-          txt.setAttribute("cm-text", "\t");
-          builder.col += tabWidth;
-        } else if (m[0] == "\r" || m[0] == "\n") {
-          var txt = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"));
-          txt.setAttribute("cm-text", m[0]);
-          builder.col += 1;
-        } else {
-          var txt = builder.cm.options.specialCharPlaceholder(m[0]);
-          txt.setAttribute("cm-text", m[0]);
-          if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
-          else content.appendChild(txt);
-          builder.col += 1;
-        }
-        builder.map.push(builder.pos, builder.pos + 1, txt);
-        builder.pos++;
-      }
-    }
-    if (style || startStyle || endStyle || mustWrap || css) {
-      var fullStyle = style || "";
-      if (startStyle) fullStyle += startStyle;
-      if (endStyle) fullStyle += endStyle;
-      var token = elt("span", [content], fullStyle, css);
-      if (title) token.title = title;
-      return builder.content.appendChild(token);
-    }
-    builder.content.appendChild(content);
-  }
-
-  function splitSpaces(old) {
-    var out = " ";
-    for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
-    out += " ";
-    return out;
-  }
-
-  // Work around nonsense dimensions being reported for stretches of
-  // right-to-left text.
-  function buildTokenBadBidi(inner, order) {
-    return function(builder, text, style, startStyle, endStyle, title, css) {
-      style = style ? style + " cm-force-border" : "cm-force-border";
-      var start = builder.pos, end = start + text.length;
-      for (;;) {
-        // Find the part that overlaps with the start of this text
-        for (var i = 0; i < order.length; i++) {
-          var part = order[i];
-          if (part.to > start && part.from <= start) break;
-        }
-        if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css);
-        inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css);
-        startStyle = null;
-        text = text.slice(part.to - start);
-        start = part.to;
-      }
-    };
-  }
-
-  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
-    var widget = !ignoreWidget && marker.widgetNode;
-    if (widget) builder.map.push(builder.pos, builder.pos + size, widget);
-    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
-      if (!widget)
-        widget = builder.content.appendChild(document.createElement("span"));
-      widget.setAttribute("cm-marker", marker.id);
-    }
-    if (widget) {
-      builder.cm.display.input.setUneditable(widget);
-      builder.content.appendChild(widget);
-    }
-    builder.pos += size;
-  }
-
-  // Outputs a number of spans to make up a line, taking highlighting
-  // and marked text into account.
-  function insertLineContent(line, builder, styles) {
-    var spans = line.markedSpans, allText = line.text, at = 0;
-    if (!spans) {
-      for (var i = 1; i < styles.length; i+=2)
-        builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));
-      return;
-    }
-
-    var len = allText.length, pos = 0, i = 1, text = "", style, css;
-    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
-    for (;;) {
-      if (nextChange == pos) { // Update current marker set
-        spanStyle = spanEndStyle = spanStartStyle = title = css = "";
-        collapsed = null; nextChange = Infinity;
-        var foundBookmarks = [];
-        for (var j = 0; j < spans.length; ++j) {
-          var sp = spans[j], m = sp.marker;
-          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
-            foundBookmarks.push(m);
-          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
-            if (sp.to != null && sp.to != pos && nextChange > sp.to) {
-              nextChange = sp.to;
-              spanEndStyle = "";
-            }
-            if (m.className) spanStyle += " " + m.className;
-            if (m.css) css = m.css;
-            if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
-            if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
-            if (m.title && !title) title = m.title;
-            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
-              collapsed = sp;
-          } else if (sp.from > pos && nextChange > sp.from) {
-            nextChange = sp.from;
-          }
-        }
-        if (collapsed && (collapsed.from || 0) == pos) {
-          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
-                             collapsed.marker, collapsed.from == null);
-          if (collapsed.to == null) return;
-          if (collapsed.to == pos) collapsed = false;
-        }
-        if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
-          buildCollapsedSpan(builder, 0, foundBookmarks[j]);
-      }
-      if (pos >= len) break;
-
-      var upto = Math.min(len, nextChange);
-      while (true) {
-        if (text) {
-          var end = pos + text.length;
-          if (!collapsed) {
-            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
-            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
-                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css);
-          }
-          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
-          pos = end;
-          spanStartStyle = "";
-        }
-        text = allText.slice(at, at = styles[i++]);
-        style = interpretTokenStyle(styles[i++], builder.cm.options);
-      }
-    }
-  }
-
-  // DOCUMENT DATA STRUCTURE
-
-  // By default, updates that start and end at the beginning of a line
-  // are treated specially, in order to make the association of line
-  // widgets and marker elements with the text behave more intuitive.
-  function isWholeLineUpdate(doc, change) {
-    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
-      (!doc.cm || doc.cm.options.wholeLineUpdateBefore);
-  }
-
-  // Perform a change on the document data structure.
-  function updateDoc(doc, change, markedSpans, estimateHeight) {
-    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
-    function update(line, text, spans) {
-      updateLine(line, text, spans, estimateHeight);
-      signalLater(line, "change", line, change);
-    }
-    function linesFor(start, end) {
-      for (var i = start, result = []; i < end; ++i)
-        result.push(new Line(text[i], spansFor(i), estimateHeight));
-      return result;
-    }
-
-    var from = change.from, to = change.to, text = change.text;
-    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
-    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
-
-    // Adjust the line structure
-    if (change.full) {
-      doc.insert(0, linesFor(0, text.length));
-      doc.remove(text.length, doc.size - text.length);
-    } else if (isWholeLineUpdate(doc, change)) {
-      // This is a whole-line replace. Treated specially to make
-      // sure line objects move the way they are supposed to.
-      var added = linesFor(0, text.length - 1);
-      update(lastLine, lastLine.text, lastSpans);
-      if (nlines) doc.remove(from.line, nlines);
-      if (added.length) doc.insert(from.line, added);
-    } else if (firstLine == lastLine) {
-      if (text.length == 1) {
-        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
-      } else {
-        var added = linesFor(1, text.length - 1);
-        added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
-        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
-        doc.insert(from.line + 1, added);
-      }
-    } else if (text.length == 1) {
-      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
-      doc.remove(from.line + 1, nlines);
-    } else {
-      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
-      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
-      var added = linesFor(1, text.length - 1);
-      if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
-      doc.insert(from.line + 1, added);
-    }
-
-    signalLater(doc, "change", doc, change);
-  }
-
-  // The document is represented as a BTree consisting of leaves, with
-  // chunk of lines in them, and branches, with up to ten leaves or
-  // other branch nodes below them. The top node is always a branch
-  // node, and is the document object itself (meaning it has
-  // additional methods and properties).
-  //
-  // All nodes have parent links. The tree is used both to go from
-  // line numbers to line objects, and to go from objects to numbers.
-  // It also indexes by height, and is used to convert between height
-  // and line object, and to find the total height of the document.
-  //
-  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
-
-  function LeafChunk(lines) {
-    this.lines = lines;
-    this.parent = null;
-    for (var i = 0, height = 0; i < lines.length; ++i) {
-      lines[i].parent = this;
-      height += lines[i].height;
-    }
-    this.height = height;
-  }
-
-  LeafChunk.prototype = {
-    chunkSize: function() { return this.lines.length; },
-    // Remove the n lines at offset 'at'.
-    removeInner: function(at, n) {
-      for (var i = at, e = at + n; i < e; ++i) {
-        var line = this.lines[i];
-        this.height -= line.height;
-        cleanUpLine(line);
-        signalLater(line, "delete");
-      }
-      this.lines.splice(at, n);
-    },
-    // Helper used to collapse a small branch into a single leaf.
-    collapse: function(lines) {
-      lines.push.apply(lines, this.lines);
-    },
-    // Insert the given array of lines at offset 'at', count them as
-    // having the given height.
-    insertInner: function(at, lines, height) {
-      this.height += height;
-      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
-      for (var i = 0; i < lines.length; ++i) lines[i].parent = this;
-    },
-    // Used to iterate over a part of the tree.
-    iterN: function(at, n, op) {
-      for (var e = at + n; at < e; ++at)
-        if (op(this.lines[at])) return true;
-    }
-  };
-
-  function BranchChunk(children) {
-    this.children = children;
-    var size = 0, height = 0;
-    for (var i = 0; i < children.length; ++i) {
-      var ch = children[i];
-      size += ch.chunkSize(); height += ch.height;
-      ch.parent = this;
-    }
-    this.size = size;
-    this.height = height;
-    this.parent = null;
-  }
-
-  BranchChunk.prototype = {
-    chunkSize: function() { return this.size; },
-    removeInner: function(at, n) {
-      this.size -= n;
-      for (var i = 0; i < this.children.length; ++i) {
-        var child = this.children[i], sz = child.chunkSize();
-        if (at < sz) {
-          var rm = Math.min(n, sz - at), oldHeight = child.height;
-          child.removeInner(at, rm);
-          this.height -= oldHeight - child.height;
-          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
-          if ((n -= rm) == 0) break;
-          at = 0;
-        } else at -= sz;
-      }
-      // If the result is smaller than 25 lines, ensure that it is a
-      // single leaf node.
-      if (this.size - n < 25 &&
-          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
-        var lines = [];
-        this.collapse(lines);
-        this.children = [new LeafChunk(lines)];
-        this.children[0].parent = this;
-      }
-    },
-    collapse: function(lines) {
-      for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
-    },
-    insertInner: function(at, lines, height) {
-      this.size += lines.length;
-      this.height += height;
-      for (var i = 0; i < this.children.length; ++i) {
-        var child = this.children[i], sz = child.chunkSize();
-        if (at <= sz) {
-          child.insertInner(at, lines, height);
-          if (child.lines && child.lines.length > 50) {
-            while (child.lines.length > 50) {
-              var spilled = child.lines.splice(child.lines.length - 25, 25);
-              var newleaf = new LeafChunk(spilled);
-              child.height -= newleaf.height;
-              this.children.splice(i + 1, 0, newleaf);
-              newleaf.parent = this;
-            }
-            this.maybeSpill();
-          }
-          break;
-        }
-        at -= sz;
-      }
-    },
-    // When a node has grown, check whether it should be split.
-    maybeSpill: function() {
-      if (this.children.length <= 10) return;
-      var me = this;
-      do {
-        var spilled = me.children.splice(me.children.length - 5, 5);
-        var sibling = new BranchChunk(spilled);
-        if (!me.parent) { // Become the parent node
-          var copy = new BranchChunk(me.children);
-          copy.parent = me;
-          me.children = [copy, sibling];
-          me = copy;
-        } else {
-          me.size -= sibling.size;
-          me.height -= sibling.height;
-          var myIndex = indexOf(me.parent.children, me);
-          me.parent.children.splice(myIndex + 1, 0, sibling);
-        }
-        sibling.parent = me.parent;
-      } while (me.children.length > 10);
-      me.parent.maybeSpill();
-    },
-    iterN: function(at, n, op) {
-      for (var i = 0; i < this.children.length; ++i) {
-        var child = this.children[i], sz = child.chunkSize();
-        if (at < sz) {
-          var used = Math.min(n, sz - at);
-          if (child.iterN(at, used, op)) return true;
-          if ((n -= used) == 0) break;
-          at = 0;
-        } else at -= sz;
-      }
-    }
-  };
-
-  var nextDocId = 0;
-  var Doc = CodeMirror.Doc = function(text, mode, firstLine, lineSep) {
-    if (!(this instanceof Doc)) return new Doc(text, mode, firstLine, lineSep);
-    if (firstLine == null) firstLine = 0;
-
-    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
-    this.first = firstLine;
-    this.scrollTop = this.scrollLeft = 0;
-    this.cantEdit = false;
-    this.cleanGeneration = 1;
-    this.frontier = firstLine;
-    var start = Pos(firstLine, 0);
-    this.sel = simpleSelection(start);
-    this.history = new History(null);
-    this.id = ++nextDocId;
-    this.modeOption = mode;
-    this.lineSep = lineSep;
-
-    if (typeof text == "string") text = this.splitLines(text);
-    updateDoc(this, {from: start, to: start, text: text});
-    setSelection(this, simpleSelection(start), sel_dontScroll);
-  };
-
-  Doc.prototype = createObj(BranchChunk.prototype, {
-    constructor: Doc,
-    // Iterate over the document. Supports two forms -- with only one
-    // argument, it calls that for each line in the document. With
-    // three, it iterates over the range given by the first two (with
-    // the second being non-inclusive).
-    iter: function(from, to, op) {
-      if (op) this.iterN(from - this.first, to - from, op);
-      else this.iterN(this.first, this.first + this.size, from);
-    },
-
-    // Non-public interface for adding and removing lines.
-    insert: function(at, lines) {
-      var height = 0;
-      for (var i = 0; i < lines.length; ++i) height += lines[i].height;
-      this.insertInner(at - this.first, lines, height);
-    },
-    remove: function(at, n) { this.removeInner(at - this.first, n); },
-
-    // From here, the methods are part of the public interface. Most
-    // are also available from CodeMirror (editor) instances.
-
-    getValue: function(lineSep) {
-      var lines = getLines(this, this.first, this.first + this.size);
-      if (lineSep === false) return lines;
-      return lines.join(lineSep || this.lineSeparator());
-    },
-    setValue: docMethodOp(function(code) {
-      var top = Pos(this.first, 0), last = this.first + this.size - 1;
-      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
-                        text: this.splitLines(code), origin: "setValue", full: true}, true);
-      setSelection(this, simpleSelection(top));
-    }),
-    replaceRange: function(code, from, to, origin) {
-      from = clipPos(this, from);
-      to = to ? clipPos(this, to) : from;
-      replaceRange(this, code, from, to, origin);
-    },
-    getRange: function(from, to, lineSep) {
-      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
-      if (lineSep === false) return lines;
-      return lines.join(lineSep || this.lineSeparator());
-    },
-
-    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
-
-    getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
-    getLineNumber: function(line) {return lineNo(line);},
-
-    getLineHandleVisualStart: function(line) {
-      if (typeof line == "number") line = getLine(this, line);
-      return visualLine(line);
-    },
-
-    lineCount: function() {return this.size;},
-    firstLine: function() {return this.first;},
-    lastLine: function() {return this.first + this.size - 1;},
-
-    clipPos: function(pos) {return clipPos(this, pos);},
-
-    getCursor: function(start) {
-      var range = this.sel.primary(), pos;
-      if (start == null || start == "head") pos = range.head;
-      else if (start == "anchor") pos = range.anchor;
-      else if (start == "end" || start == "to" || start === false) pos = range.to();
-      else pos = range.from();
-      return pos;
-    },
-    listSelections: function() { return this.sel.ranges; },
-    somethingSelected: function() {return this.sel.somethingSelected();},
-
-    setCursor: docMethodOp(function(line, ch, options) {
-      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
-    }),
-    setSelection: docMethodOp(function(anchor, head, options) {
-      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
-    }),
-    extendSelection: docMethodOp(function(head, other, options) {
-      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
-    }),
-    extendSelections: docMethodOp(function(heads, options) {
-      extendSelections(this, clipPosArray(this, heads, options));
-    }),
-    extendSelectionsBy: docMethodOp(function(f, options) {
-      extendSelections(this, map(this.sel.ranges, f), options);
-    }),
-    setSelections: docMethodOp(function(ranges, primary, options) {
-      if (!ranges.length) return;
-      for (var i = 0, out = []; i < ranges.length; i++)
-        out[i] = new Range(clipPos(this, ranges[i].anchor),
-                           clipPos(this, ranges[i].head));
-      if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
-      setSelection(this, normalizeSelection(out, primary), options);
-    }),
-    addSelection: docMethodOp(function(anchor, head, options) {
-      var ranges = this.sel.ranges.slice(0);
-      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
-      setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
-    }),
-
-    getSelection: function(lineSep) {
-      var ranges = this.sel.ranges, lines;
-      for (var i = 0; i < ranges.length; i++) {
-        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
-        lines = lines ? lines.concat(sel) : sel;
-      }
-      if (lineSep === false) return lines;
-      else return lines.join(lineSep || this.lineSeparator());
-    },
-    getSelections: function(lineSep) {
-      var parts = [], ranges = this.sel.ranges;
-      for (var i = 0; i < ranges.length; i++) {
-        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
-        if (lineSep !== false) sel = sel.join(lineSep || this.lineSeparator());
-        parts[i] = sel;
-      }
-      return parts;
-    },
-    replaceSelection: function(code, collapse, origin) {
-      var dup = [];
-      for (var i = 0; i < this.sel.ranges.length; i++)
-        dup[i] = code;
-      this.replaceSelections(dup, collapse, origin || "+input");
-    },
-    replaceSelections: docMethodOp(function(code, collapse, origin) {
-      var changes = [], sel = this.sel;
-      for (var i = 0; i < sel.ranges.length; i++) {
-        var range = sel.ranges[i];
-        changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};
-      }
-      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
-      for (var i = changes.length - 1; i >= 0; i--)
-        makeChange(this, changes[i]);
-      if (newSel) setSelectionReplaceHistory(this, newSel);
-      else if (this.cm) ensureCursorVisible(this.cm);
-    }),
-    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
-    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
-    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
-    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),
-
-    setExtending: function(val) {this.extend = val;},
-    getExtending: function() {return this.extend;},
-
-    historySize: function() {
-      var hist = this.history, done = 0, undone = 0;
-      for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
-      for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
-      return {undo: done, redo: undone};
-    },
-    clearHistory: function() {this.history = new History(this.history.maxGeneration);},
-
-    markClean: function() {
-      this.cleanGeneration = this.changeGeneration(true);
-    },
-    changeGeneration: function(forceSplit) {
-      if (forceSplit)
-        this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null;
-      return this.history.generation;
-    },
-    isClean: function (gen) {
-      return this.history.generation == (gen || this.cleanGeneration);
-    },
-
-    getHistory: function() {
-      return {done: copyHistoryArray(this.history.done),
-              undone: copyHistoryArray(this.history.undone)};
-    },
-    setHistory: function(histData) {
-      var hist = this.history = new History(this.history.maxGeneration);
-      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
-      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
-    },
-
-    addLineClass: docMethodOp(function(handle, where, cls) {
-      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
-        var prop = where == "text" ? "textClass"
-                 : where == "background" ? "bgClass"
-                 : where == "gutter" ? "gutterClass" : "wrapClass";
-        if (!line[prop]) line[prop] = cls;
-        else if (classTest(cls).test(line[prop])) return false;
-        else line[prop] += " " + cls;
-        return true;
-      });
-    }),
-    removeLineClass: docMethodOp(function(handle, where, cls) {
-      return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
-        var prop = where == "text" ? "textClass"
-                 : where == "background" ? "bgClass"
-                 : where == "gutter" ? "gutterClass" : "wrapClass";
-        var cur = line[prop];
-        if (!cur) return false;
-        else if (cls == null) line[prop] = null;
-        else {
-          var found = cur.match(classTest(cls));
-          if (!found) return false;
-          var end = found.index + found[0].length;
-          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
-        }
-        return true;
-      });
-    }),
-
-    addLineWidget: docMethodOp(function(handle, node, options) {
-      return addLineWidget(this, handle, node, options);
-    }),
-    removeLineWidget: function(widget) { widget.clear(); },
-
-    markText: function(from, to, options) {
-      return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
-    },
-    setBookmark: function(pos, options) {
-      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
-                      insertLeft: options && options.insertLeft,
-                      clearWhenEmpty: false, shared: options && options.shared,
-                      handleMouseEvents: options && options.handleMouseEvents};
-      pos = clipPos(this, pos);
-      return markText(this, pos, pos, realOpts, "bookmark");
-    },
-    findMarksAt: function(pos) {
-      pos = clipPos(this, pos);
-      var markers = [], spans = getLine(this, pos.line).markedSpans;
-      if (spans) for (var i = 0; i < spans.length; ++i) {
-        var span = spans[i];
-        if ((span.from == null || span.from <= pos.ch) &&
-            (span.to == null || span.to >= pos.ch))
-          markers.push(span.marker.parent || span.marker);
-      }
-      return markers;
-    },
-    findMarks: function(from, to, filter) {
-      from = clipPos(this, from); to = clipPos(this, to);
-      var found = [], lineNo = from.line;
-      this.iter(from.line, to.line + 1, function(line) {
-        var spans = line.markedSpans;
-        if (spans) for (var i = 0; i < spans.length; i++) {
-          var span = spans[i];
-          if (!(lineNo == from.line && from.ch > span.to ||
-                span.from == null && lineNo != from.line||
-                lineNo == to.line && span.from > to.ch) &&
-              (!filter || filter(span.marker)))
-            found.push(span.marker.parent || span.marker);
-        }
-        ++lineNo;
-      });
-      return found;
-    },
-    getAllMarks: function() {
-      var markers = [];
-      this.iter(function(line) {
-        var sps = line.markedSpans;
-        if (sps) for (var i = 0; i < sps.length; ++i)
-          if (sps[i].from != null) markers.push(sps[i].marker);
-      });
-      return markers;
-    },
-
-    posFromIndex: function(off) {
-      var ch, lineNo = this.first;
-      this.iter(function(line) {
-        var sz = line.text.length + 1;
-        if (sz > off) { ch = off; return true; }
-        off -= sz;
-        ++lineNo;
-      });
-      return clipPos(this, Pos(lineNo, ch));
-    },
-    indexFromPos: function (coords) {
-      coords = clipPos(this, coords);
-      var index = coords.ch;
-      if (coords.line < this.first || coords.ch < 0) return 0;
-      this.iter(this.first, coords.line, function (line) {
-        index += line.text.length + 1;
-      });
-      return index;
-    },
-
-    copy: function(copyHistory) {
-      var doc = new Doc(getLines(this, this.first, this.first + this.size),
-                        this.modeOption, this.first, this.lineSep);
-      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
-      doc.sel = this.sel;
-      doc.extend = false;
-      if (copyHistory) {
-        doc.history.undoDepth = this.history.undoDepth;
-        doc.setHistory(this.getHistory());
-      }
-      return doc;
-    },
-
-    linkedDoc: function(options) {
-      if (!options) options = {};
-      var from = this.first, to = this.first + this.size;
-      if (options.from != null && options.from > from) from = options.from;
-      if (options.to != null && options.to < to) to = options.to;
-      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep);
-      if (options.sharedHist) copy.history = this.history;
-      (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
-      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
-      copySharedMarkers(copy, findSharedMarkers(this));
-      return copy;
-    },
-    unlinkDoc: function(other) {
-      if (other instanceof CodeMirror) other = other.doc;
-      if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
-        var link = this.linked[i];
-        if (link.doc != other) continue;
-        this.linked.splice(i, 1);
-        other.unlinkDoc(this);
-        detachSharedMarkers(findSharedMarkers(this));
-        break;
-      }
-      // If the histories were shared, split them again
-      if (other.history == this.history) {
-        var splitIds = [other.id];
-        linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
-        other.history = new History(null);
-        other.history.done = copyHistoryArray(this.history.done, splitIds);
-        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
-      }
-    },
-    iterLinkedDocs: function(f) {linkedDocs(this, f);},
-
-    getMode: function() {return this.mode;},
-    getEditor: function() {return this.cm;},
-
-    splitLines: function(str) {
-      if (this.lineSep) return str.split(this.lineSep);
-      return splitLinesAuto(str);
-    },
-    lineSeparator: function() { return this.lineSep || "\n"; }
-  });
-
-  // Public alias.
-  Doc.prototype.eachLine = Doc.prototype.iter;
-
-  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
-  var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
-  for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
-    CodeMirror.prototype[prop] = (function(method) {
-      return function() {return method.apply(this.doc, arguments);};
-    })(Doc.prototype[prop]);
-
-  eventMixin(Doc);
-
-  // Call f for all linked documents.
-  function linkedDocs(doc, f, sharedHistOnly) {
-    function propagate(doc, skip, sharedHist) {
-      if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
-        var rel = doc.linked[i];
-        if (rel.doc == skip) continue;
-        var shared = sharedHist && rel.sharedHist;
-        if (sharedHistOnly && !shared) continue;
-        f(rel.doc, shared);
-        propagate(rel.doc, doc, shared);
-      }
-    }
-    propagate(doc, null, true);
-  }
-
-  // Attach a document to an editor.
-  function attachDoc(cm, doc) {
-    if (doc.cm) throw new Error("This document is already in use.");
-    cm.doc = doc;
-    doc.cm = cm;
-    estimateLineHeights(cm);
-    loadMode(cm);
-    if (!cm.options.lineWrapping) findMaxLine(cm);
-    cm.options.mode = doc.modeOption;
-    regChange(cm);
-  }
-
-  // LINE UTILITIES
-
-  // Find the line object corresponding to the given line number.
-  function getLine(doc, n) {
-    n -= doc.first;
-    if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
-    for (var chunk = doc; !chunk.lines;) {
-      for (var i = 0;; ++i) {
-        var child = chunk.children[i], sz = child.chunkSize();
-        if (n < sz) { chunk = child; break; }
-        n -= sz;
-      }
-    }
-    return chunk.lines[n];
-  }
-
-  // Get the part of a document between two positions, as an array of
-  // strings.
-  function getBetween(doc, start, end) {
-    var out = [], n = start.line;
-    doc.iter(start.line, end.line + 1, function(line) {
-      var text = line.text;
-      if (n == end.line) text = text.slice(0, end.ch);
-      if (n == start.line) text = text.slice(start.ch);
-      out.push(text);
-      ++n;
-    });
-    return out;
-  }
-  // Get the lines between from and to, as array of strings.
-  function getLines(doc, from, to) {
-    var out = [];
-    doc.iter(from, to, function(line) { out.push(line.text); });
-    return out;
-  }
-
-  // Update the height of a line, propagating the height change
-  // upwards to parent nodes.
-  function updateLineHeight(line, height) {
-    var diff = height - line.height;
-    if (diff) for (var n = line; n; n = n.parent) n.height += diff;
-  }
-
-  // Given a line object, find its line number by walking up through
-  // its parent links.
-  function lineNo(line) {
-    if (line.parent == null) return null;
-    var cur = line.parent, no = indexOf(cur.lines, line);
-    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
-      for (var i = 0;; ++i) {
-        if (chunk.children[i] == cur) break;
-        no += chunk.children[i].chunkSize();
-      }
-    }
-    return no + cur.first;
-  }
-
-  // Find the line at the given vertical position, using the height
-  // information in the document tree.
-  function lineAtHeight(chunk, h) {
-    var n = chunk.first;
-    outer: do {
-      for (var i = 0; i < chunk.children.length; ++i) {
-        var child = chunk.children[i], ch = child.height;
-        if (h < ch) { chunk = child; continue outer; }
-        h -= ch;
-        n += child.chunkSize();
-      }
-      return n;
-    } while (!chunk.lines);
-    for (var i = 0; i < chunk.lines.length; ++i) {
-      var line = chunk.lines[i], lh = line.height;
-      if (h < lh) break;
-      h -= lh;
-    }
-    return n + i;
-  }
-
-
-  // Find the height above the given line.
-  function heightAtLine(lineObj) {
-    lineObj = visualLine(lineObj);
-
-    var h = 0, chunk = lineObj.parent;
-    for (var i = 0; i < chunk.lines.length; ++i) {
-      var line = chunk.lines[i];
-      if (line == lineObj) break;
-      else h += line.height;
-    }
-    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
-      for (var i = 0; i < p.children.length; ++i) {
-        var cur = p.children[i];
-        if (cur == chunk) break;
-        else h += cur.height;
-      }
-    }
-    return h;
-  }
-
-  // Get the bidi ordering for the given line (and cache it). Returns
-  // false for lines that are fully left-to-right, and an array of
-  // BidiSpan objects otherwise.
-  function getOrder(line) {
-    var order = line.order;
-    if (order == null) order = line.order = bidiOrdering(line.text);
-    return order;
-  }
-
-  // HISTORY
-
-  function History(startGen) {
-    // Arrays of change events and selections. Doing something adds an
-    // event to done and clears undo. Undoing moves events from done
-    // to undone, redoing moves them in the other direction.
-    this.done = []; this.undone = [];
-    this.undoDepth = Infinity;
-    // Used to track when changes can be merged into a single undo
-    // event
-    this.lastModTime = this.lastSelTime = 0;
-    this.lastOp = this.lastSelOp = null;
-    this.lastOrigin = this.lastSelOrigin = null;
-    // Used by the isClean() method
-    this.generation = this.maxGeneration = startGen || 1;
-  }
-
-  // Create a history change event from an updateDoc-style change
-  // object.
-  function historyChangeFromChange(doc, change) {
-    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
-    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
-    linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
-    return histChange;
-  }
-
-  // Pop all selection events off the end of a history array. Stop at
-  // a change event.
-  function clearSelectionEvents(array) {
-    while (array.length) {
-      var last = lst(array);
-      if (last.ranges) array.pop();
-      else break;
-    }
-  }
-
-  // Find the top change event in the history. Pop off selection
-  // events that are in the way.
-  function lastChangeEvent(hist, force) {
-    if (force) {
-      clearSelectionEvents(hist.done);
-      return lst(hist.done);
-    } else if (hist.done.length && !lst(hist.done).ranges) {
-      return lst(hist.done);
-    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
-      hist.done.pop();
-      return lst(hist.done);
-    }
-  }
-
-  // Register a change in the history. Merges changes that are within
-  // a single operation, ore are close together with an origin that
-  // allows merging (starting with "+") into a single event.
-  function addChangeToHistory(doc, change, selAfter, opId) {
-    var hist = doc.history;
-    hist.undone.length = 0;
-    var time = +new Date, cur;
-
-    if ((hist.lastOp == opId ||
-         hist.lastOrigin == change.origin && change.origin &&
-         ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
-          change.origin.charAt(0) == "*")) &&
-        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
-      // Merge this change into the last event
-      var last = lst(cur.changes);
-      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
-        // Optimized case for simple insertion -- don't want to add
-        // new changesets for every character typed
-        last.to = changeEnd(change);
-      } else {
-        // Add new sub-event
-        cur.changes.push(historyChangeFromChange(doc, change));
-      }
-    } else {
-      // Can not be merged, start a new event.
-      var before = lst(hist.done);
-      if (!before || !before.ranges)
-        pushSelectionToHistory(doc.sel, hist.done);
-      cur = {changes: [historyChangeFromChange(doc, change)],
-             generation: hist.generation};
-      hist.done.push(cur);
-      while (hist.done.length > hist.undoDepth) {
-        hist.done.shift();
-        if (!hist.done[0].ranges) hist.done.shift();
-      }
-    }
-    hist.done.push(selAfter);
-    hist.generation = ++hist.maxGeneration;
-    hist.lastModTime = hist.lastSelTime = time;
-    hist.lastOp = hist.lastSelOp = opId;
-    hist.lastOrigin = hist.lastSelOrigin = change.origin;
-
-    if (!last) signal(doc, "historyAdded");
-  }
-
-  function selectionEventCanBeMerged(doc, origin, prev, sel) {
-    var ch = origin.charAt(0);
-    return ch == "*" ||
-      ch == "+" &&
-      prev.ranges.length == sel.ranges.length &&
-      prev.somethingSelected() == sel.somethingSelected() &&
-      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
-  }
-
-  // Called whenever the selection changes, sets the new selection as
-  // the pending selection in the history, and pushes the old pending
-  // selection into the 'done' array when it was significantly
-  // different (in number of selected ranges, emptiness, or time).
-  function addSelectionToHistory(doc, sel, opId, options) {
-    var hist = doc.history, origin = options && options.origin;
-
-    // A new event is started when the previous origin does not match
-    // the current, or the origins don't allow matching. Origins
-    // starting with * are always merged, those starting with + are
-    // merged when similar and close together in time.
-    if (opId == hist.lastSelOp ||
-        (origin && hist.lastSelOrigin == origin &&
-         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
-          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
-      hist.done[hist.done.length - 1] = sel;
-    else
-      pushSelectionToHistory(sel, hist.done);
-
-    hist.lastSelTime = +new Date;
-    hist.lastSelOrigin = origin;
-    hist.lastSelOp = opId;
-    if (options && options.clearRedo !== false)
-      clearSelectionEvents(hist.undone);
-  }
-
-  function pushSelectionToHistory(sel, dest) {
-    var top = lst(dest);
-    if (!(top && top.ranges && top.equals(sel)))
-      dest.push(sel);
-  }
-
-  // Used to store marked span information in the history.
-  function attachLocalSpans(doc, change, from, to) {
-    var existing = change["spans_" + doc.id], n = 0;
-    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
-      if (line.markedSpans)
-        (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
-      ++n;
-    });
-  }
-
-  // When un/re-doing restores text containing marked spans, those
-  // that have been explicitly cleared should not be restored.
-  function removeClearedSpans(spans) {
-    if (!spans) return null;
-    for (var i = 0, out; i < spans.length; ++i) {
-      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
-      else if (out) out.push(spans[i]);
-    }
-    return !out ? spans : out.length ? out : null;
-  }
-
-  // Retrieve and filter the old marked spans stored in a change event.
-  function getOldSpans(doc, change) {
-    var found = change["spans_" + doc.id];
-    if (!found) return null;
-    for (var i = 0, nw = []; i < change.text.length; ++i)
-      nw.push(removeClearedSpans(found[i]));
-    return nw;
-  }
-
-  // Used both to provide a JSON-safe object in .getHistory, and, when
-  // detaching a document, to split the history in two
-  function copyHistoryArray(events, newGroup, instantiateSel) {
-    for (var i = 0, copy = []; i < events.length; ++i) {
-      var event = events[i];
-      if (event.ranges) {
-        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
-        continue;
-      }
-      var changes = event.changes, newChanges = [];
-      copy.push({changes: newChanges});
-      for (var j = 0; j < changes.length; ++j) {
-        var change = changes[j], m;
-        newChanges.push({from: change.from, to: change.to, text: change.text});
-        if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
-          if (indexOf(newGroup, Number(m[1])) > -1) {
-            lst(newChanges)[prop] = change[prop];
-            delete change[prop];
-          }
-        }
-      }
-    }
-    return copy;
-  }
-
-  // Rebasing/resetting history to deal with externally-sourced changes
-
-  function rebaseHistSelSingle(pos, from, to, diff) {
-    if (to < pos.line) {
-      pos.line += diff;
-    } else if (from < pos.line) {
-      pos.line = from;
-      pos.ch = 0;
-    }
-  }
-
-  // Tries to rebase an array of history events given a change in the
-  // document. If the change touches the same lines as the event, the
-  // event, and everything 'behind' it, is discarded. If the change is
-  // before the event, the event's positions are updated. Uses a
-  // copy-on-write scheme for the positions, to avoid having to
-  // reallocate them all on every rebase, but also avoid problems with
-  // shared position objects being unsafely updated.
-  function rebaseHistArray(array, from, to, diff) {
-    for (var i = 0; i < array.length; ++i) {
-      var sub = array[i], ok = true;
-      if (sub.ranges) {
-        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
-        for (var j = 0; j < sub.ranges.length; j++) {
-          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
-          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
-        }
-        continue;
-      }
-      for (var j = 0; j < sub.changes.length; ++j) {
-        var cur = sub.changes[j];
-        if (to < cur.from.line) {
-          cur.from = Pos(cur.from.line + diff, cur.from.ch);
-          cur.to = Pos(cur.to.line + diff, cur.to.ch);
-        } else if (from <= cur.to.line) {
-          ok = false;
-          break;
-        }
-      }
-      if (!ok) {
-        array.splice(0, i + 1);
-        i = 0;
-      }
-    }
-  }
-
-  function rebaseHist(hist, change) {
-    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
-    rebaseHistArray(hist.done, from, to, diff);
-    rebaseHistArray(hist.undone, from, to, diff);
-  }
-
-  // EVENT UTILITIES
-
-  // Due to the fact that we still support jurassic IE versions, some
-  // compatibility wrappers are needed.
-
-  var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
-    if (e.preventDefault) e.preventDefault();
-    else e.returnValue = false;
-  };
-  var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
-    if (e.stopPropagation) e.stopPropagation();
-    else e.cancelBubble = true;
-  };
-  function e_defaultPrevented(e) {
-    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
-  }
-  var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};
-
-  function e_target(e) {return e.target || e.srcElement;}
-  function e_button(e) {
-    var b = e.which;
-    if (b == null) {
-      if (e.button & 1) b = 1;
-      else if (e.button & 2) b = 3;
-      else if (e.button & 4) b = 2;
-    }
-    if (mac && e.ctrlKey && b == 1) b = 3;
-    return b;
-  }
-
-  // EVENT HANDLING
-
-  // Lightweight event framework. on/off also work on DOM nodes,
-  // registering native DOM handlers.
-
-  var on = CodeMirror.on = function(emitter, type, f) {
-    if (emitter.addEventListener)
-      emitter.addEventListener(type, f, false);
-    else if (emitter.attachEvent)
-      emitter.attachEvent("on" + type, f);
-    else {
-      var map = emitter._handlers || (emitter._handlers = {});
-      var arr = map[type] || (map[type] = []);
-      arr.push(f);
-    }
-  };
-
-  var noHandlers = []
-  function getHandlers(emitter, type, copy) {
-    var arr = emitter._handlers && emitter._handlers[type]
-    if (copy) return arr && arr.length > 0 ? arr.slice() : noHandlers
-    else return arr || noHandlers
-  }
-
-  var off = CodeMirror.off = function(emitter, type, f) {
-    if (emitter.removeEventListener)
-      emitter.removeEventListener(type, f, false);
-    else if (emitter.detachEvent)
-      emitter.detachEvent("on" + type, f);
-    else {
-      var handlers = getHandlers(emitter, type, false)
-      for (var i = 0; i < handlers.length; ++i)
-        if (handlers[i] == f) { handlers.splice(i, 1); break; }
-    }
-  };
-
-  var signal = CodeMirror.signal = function(emitter, type /*, values...*/) {
-    var handlers = getHandlers(emitter, type, true)
-    if (!handlers.length) return;
-    var args = Array.prototype.slice.call(arguments, 2);
-    for (var i = 0; i < handlers.length; ++i) handlers[i].apply(null, args);
-  };
-
-  var orphanDelayedCallbacks = null;
-
-  // Often, we want to signal events at a point where we are in the
-  // middle of some work, but don't want the handler to start calling
-  // other methods on the editor, which might be in an inconsistent
-  // state or simply not expect any other events to happen.
-  // signalLater looks whether there are any handlers, and schedules
-  // them to be executed when the last operation ends, or, if no
-  // operation is active, when a timeout fires.
-  function signalLater(emitter, type /*, values...*/) {
-    var arr = getHandlers(emitter, type, false)
-    if (!arr.length) return;
-    var args = Array.prototype.slice.call(arguments, 2), list;
-    if (operationGroup) {
-      list = operationGroup.delayedCallbacks;
-    } else if (orphanDelayedCallbacks) {
-      list = orphanDelayedCallbacks;
-    } else {
-      list = orphanDelayedCallbacks = [];
-      setTimeout(fireOrphanDelayed, 0);
-    }
-    function bnd(f) {return function(){f.apply(null, args);};};
-    for (var i = 0; i < arr.length; ++i)
-      list.push(bnd(arr[i]));
-  }
-
-  function fireOrphanDelayed() {
-    var delayed = orphanDelayedCallbacks;
-    orphanDelayedCallbacks = null;
-    for (var i = 0; i < delayed.length; ++i) delayed[i]();
-  }
-
-  // The DOM events that CodeMirror handles can be overridden by
-  // registering a (non-DOM) handler on the editor for the event name,
-  // and preventDefault-ing the event in that handler.
-  function signalDOMEvent(cm, e, override) {
-    if (typeof e == "string")
-      e = {type: e, preventDefault: function() { this.defaultPrevented = true; }};
-    signal(cm, override || e.type, cm, e);
-    return e_defaultPrevented(e) || e.codemirrorIgnore;
-  }
-
-  function signalCursorActivity(cm) {
-    var arr = cm._handlers && cm._handlers.cursorActivity;
-    if (!arr) return;
-    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
-    for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)
-      set.push(arr[i]);
-  }
-
-  function hasHandler(emitter, type) {
-    return getHandlers(emitter, type).length > 0
-  }
-
-  // Add on and off methods to a constructor's prototype, to make
-  // registering events on such objects more convenient.
-  function eventMixin(ctor) {
-    ctor.prototype.on = function(type, f) {on(this, type, f);};
-    ctor.prototype.off = function(type, f) {off(this, type, f);};
-  }
-
-  // MISC UTILITIES
-
-  // Number of pixels added to scroller and sizer to hide scrollbar
-  var scrollerGap = 30;
-
-  // Returned or thrown by various protocols to signal 'I'm not
-  // handling this'.
-  var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
-
-  // Reused option objects for setSelection & friends
-  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};
-
-  function Delayed() {this.id = null;}
-  Delayed.prototype.set = function(ms, f) {
-    clearTimeout(this.id);
-    this.id = setTimeout(f, ms);
-  };
-
-  // Counts the column offset in a string, taking tabs into account.
-  // Used mostly to find indentation.
-  var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {
-    if (end == null) {
-      end = string.search(/[^\s\u00a0]/);
-      if (end == -1) end = string.length;
-    }
-    for (var i = startIndex || 0, n = startValue || 0;;) {
-      var nextTab = string.indexOf("\t", i);
-      if (nextTab < 0 || nextTab >= end)
-        return n + (end - i);
-      n += nextTab - i;
-      n += tabSize - (n % tabSize);
-      i = nextTab + 1;
-    }
-  };
-
-  // The inverse of countColumn -- find the offset that corresponds to
-  // a particular column.
-  var findColumn = CodeMirror.findColumn = function(string, goal, tabSize) {
-    for (var pos = 0, col = 0;;) {
-      var nextTab = string.indexOf("\t", pos);
-      if (nextTab == -1) nextTab = string.length;
-      var skipped = nextTab - pos;
-      if (nextTab == string.length || col + skipped >= goal)
-        return pos + Math.min(skipped, goal - col);
-      col += nextTab - pos;
-      col += tabSize - (col % tabSize);
-      pos = nextTab + 1;
-      if (col >= goal) return pos;
-    }
-  }
-
-  var spaceStrs = [""];
-  function spaceStr(n) {
-    while (spaceStrs.length <= n)
-      spaceStrs.push(lst(spaceStrs) + " ");
-    return spaceStrs[n];
-  }
-
-  function lst(arr) { return arr[arr.length-1]; }
-
-  var selectInput = function(node) { node.select(); };
-  if (ios) // Mobile Safari apparently has a bug where select() is broken.
-    selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
-  else if (ie) // Suppress mysterious IE10 errors
-    selectInput = function(node) { try { node.select(); } catch(_e) {} };
-
-  function indexOf(array, elt) {
-    for (var i = 0; i < array.length; ++i)
-      if (array[i] == elt) return i;
-    return -1;
-  }
-  function map(array, f) {
-    var out = [];
-    for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
-    return out;
-  }
-
-  function nothing() {}
-
-  function createObj(base, props) {
-    var inst;
-    if (Object.create) {
-      inst = Object.create(base);
-    } else {
-      nothing.prototype = base;
-      inst = new nothing();
-    }
-    if (props) copyObj(props, inst);
-    return inst;
-  };
-
-  function copyObj(obj, target, overwrite) {
-    if (!target) target = {};
-    for (var prop in obj)
-      if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
-        target[prop] = obj[prop];
-    return target;
-  }
-
-  function bind(f) {
-    var args = Array.prototype.slice.call(arguments, 1);
-    return function(){return f.apply(null, args);};
-  }
-
-  var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
-  var isWordCharBasic = CodeMirror.isWordChar = function(ch) {
-    return /\w/.test(ch) || ch > "\x80" &&
-      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
-  };
-  function isWordChar(ch, helper) {
-    if (!helper) return isWordCharBasic(ch);
-    if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true;
-    return helper.test(ch);
-  }
-
-  function isEmpty(obj) {
-    for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
-    return true;
-  }
-
-  // Extending unicode characters. A series of a non-extending char +
-  // any number of extending chars is treated as a single unit as far
-  // as editing and measuring is concerned. This is not fully correct,
-  // since some scripts/fonts/browsers also treat other configurations
-  // of code points as a group.
-  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
-  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }
-
-  // DOM UTILITIES
-
-  function elt(tag, content, className, style) {
-    var e = document.createElement(tag);
-    if (className) e.className = className;
-    if (style) e.style.cssText = style;
-    if (typeof content == "string") e.appendChild(document.createTextNode(content));
-    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
-    return e;
-  }
-
-  var range;
-  if (document.createRange) range = function(node, start, end, endNode) {
-    var r = document.createRange();
-    r.setEnd(endNode || node, end);
-    r.setStart(node, start);
-    return r;
-  };
-  else range = function(node, start, end) {
-    var r = document.body.createTextRange();
-    try { r.moveToElementText(node.parentNode); }
-    catch(e) { return r; }
-    r.collapse(true);
-    r.moveEnd("character", end);
-    r.moveStart("character", start);
-    return r;
-  };
-
-  function removeChildren(e) {
-    for (var count = e.childNodes.length; count > 0; --count)
-      e.removeChild(e.firstChild);
-    return e;
-  }
-
-  function removeChildrenAndAdd(parent, e) {
-    return removeChildren(parent).appendChild(e);
-  }
-
-  var contains = CodeMirror.contains = function(parent, child) {
-    if (child.nodeType == 3) // Android browser always returns false when child is a textnode
-      child = child.parentNode;
-    if (parent.contains)
-      return parent.contains(child);
-    do {
-      if (child.nodeType == 11) child = child.host;
-      if (child == parent) return true;
-    } while (child = child.parentNode);
-  };
-
-  function activeElt() {
-    var activeElement = document.activeElement;
-    while (activeElement && activeElement.root && activeElement.root.activeElement)
-      activeElement = activeElement.root.activeElement;
-    return activeElement;
-  }
-  // Older versions of IE throws unspecified error when touching
-  // document.activeElement in some cases (during loading, in iframe)
-  if (ie && ie_version < 11) activeElt = function() {
-    try { return document.activeElement; }
-    catch(e) { return document.body; }
-  };
-
-  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); }
-  var rmClass = CodeMirror.rmClass = function(node, cls) {
-    var current = node.className;
-    var match = classTest(cls).exec(current);
-    if (match) {
-      var after = current.slice(match.index + match[0].length);
-      node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
-    }
-  };
-  var addClass = CodeMirror.addClass = function(node, cls) {
-    var current = node.className;
-    if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls;
-  };
-  function joinClasses(a, b) {
-    var as = a.split(" ");
-    for (var i = 0; i < as.length; i++)
-      if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i];
-    return b;
-  }
-
-  // WINDOW-WIDE EVENTS
-
-  // These must be handled carefully, because naively registering a
-  // handler for each editor will cause the editors to never be
-  // garbage collected.
-
-  function forEachCodeMirror(f) {
-    if (!document.body.getElementsByClassName) return;
-    var byClass = document.body.getElementsByClassName("CodeMirror");
-    for (var i = 0; i < byClass.length; i++) {
-      var cm = byClass[i].CodeMirror;
-      if (cm) f(cm);
-    }
-  }
-
-  var globalsRegistered = false;
-  function ensureGlobalHandlers() {
-    if (globalsRegistered) return;
-    registerGlobalHandlers();
-    globalsRegistered = true;
-  }
-  function registerGlobalHandlers() {
-    // When the window resizes, we need to refresh active editors.
-    var resizeTimer;
-    on(window, "resize", function() {
-      if (resizeTimer == null) resizeTimer = setTimeout(function() {
-        resizeTimer = null;
-        forEachCodeMirror(onResize);
-      }, 100);
-    });
-    // When the window loses focus, we want to show the editor as blurred
-    on(window, "blur", function() {
-      forEachCodeMirror(onBlur);
-    });
-  }
-
-  // FEATURE DETECTION
-
-  // Detect drag-and-drop
-  var dragAndDrop = function() {
-    // There is *some* kind of drag-and-drop support in IE6-8, but I
-    // couldn't get it to work yet.
-    if (ie && ie_version < 9) return false;
-    var div = elt('div');
-    return "draggable" in div || "dragDrop" in div;
-  }();
-
-  var zwspSupported;
-  function zeroWidthElement(measure) {
-    if (zwspSupported == null) {
-      var test = elt("span", "\u200b");
-      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
-      if (measure.firstChild.offsetHeight != 0)
-        zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8);
-    }
-    var node = zwspSupported ? elt("span", "\u200b") :
-      elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
-    node.setAttribute("cm-text", "");
-    return node;
-  }
-
-  // Feature-detect IE's crummy client rect reporting for bidi text
-  var badBidiRects;
-  function hasBadBidiRects(measure) {
-    if (badBidiRects != null) return badBidiRects;
-    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
-    var r0 = range(txt, 0, 1).getBoundingClientRect();
-    if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
-    var r1 = range(txt, 1, 2).getBoundingClientRect();
-    return badBidiRects = (r1.right - r0.right < 3);
-  }
-
-  // See if "".split is the broken IE version, if so, provide an
-  // alternative way to split lines.
-  var splitLinesAuto = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
-    var pos = 0, result = [], l = string.length;
-    while (pos <= l) {
-      var nl = string.indexOf("\n", pos);
-      if (nl == -1) nl = string.length;
-      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
-      var rt = line.indexOf("\r");
-      if (rt != -1) {
-        result.push(line.slice(0, rt));
-        pos += rt + 1;
-      } else {
-        result.push(line);
-        pos = nl + 1;
-      }
-    }
-    return result;
-  } : function(string){return string.split(/\r\n?|\n/);};
-
-  var hasSelection = window.getSelection ? function(te) {
-    try { return te.selectionStart != te.selectionEnd; }
-    catch(e) { return false; }
-  } : function(te) {
-    try {var range = te.ownerDocument.selection.createRange();}
-    catch(e) {}
-    if (!range || range.parentElement() != te) return false;
-    return range.compareEndPoints("StartToEnd", range) != 0;
-  };
-
-  var hasCopyEvent = (function() {
-    var e = elt("div");
-    if ("oncopy" in e) return true;
-    e.setAttribute("oncopy", "return;");
-    return typeof e.oncopy == "function";
-  })();
-
-  var badZoomedRects = null;
-  function hasBadZoomedRects(measure) {
-    if (badZoomedRects != null) return badZoomedRects;
-    var node = removeChildrenAndAdd(measure, elt("span", "x"));
-    var normal = node.getBoundingClientRect();
-    var fromRange = range(node, 0, 1).getBoundingClientRect();
-    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1;
-  }
-
-  // KEY NAMES
-
-  var keyNames = CodeMirror.keyNames = {
-    3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
-    19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
-    36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
-    46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
-    106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete",
-    173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
-    221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
-    63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
-  };
-  (function() {
-    // Number keys
-    for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
-    // Alphabetic keys
-    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
-    // Function keys
-    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
-  })();
-
-  // BIDI HELPERS
-
-  function iterateBidiSections(order, from, to, f) {
-    if (!order) return f(from, to, "ltr");
-    var found = false;
-    for (var i = 0; i < order.length; ++i) {
-      var part = order[i];
-      if (part.from < to && part.to > from || from == to && part.to == from) {
-        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
-        found = true;
-      }
-    }
-    if (!found) f(from, to, "ltr");
-  }
-
-  function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
-  function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
-
-  function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
-  function lineRight(line) {
-    var order = getOrder(line);
-    if (!order) return line.text.length;
-    return bidiRight(lst(order));
-  }
-
-  function lineStart(cm, lineN) {
-    var line = getLine(cm.doc, lineN);
-    var visual = visualLine(line);
-    if (visual != line) lineN = lineNo(visual);
-    var order = getOrder(visual);
-    var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
-    return Pos(lineN, ch);
-  }
-  function lineEnd(cm, lineN) {
-    var merged, line = getLine(cm.doc, lineN);
-    while (merged = collapsedSpanAtEnd(line)) {
-      line = merged.find(1, true).line;
-      lineN = null;
-    }
-    var order = getOrder(line);
-    var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
-    return Pos(lineN == null ? lineNo(line) : lineN, ch);
-  }
-  function lineStartSmart(cm, pos) {
-    var start = lineStart(cm, pos.line);
-    var line = getLine(cm.doc, start.line);
-    var order = getOrder(line);
-    if (!order || order[0].level == 0) {
-      var firstNonWS = Math.max(0, line.text.search(/\S/));
-      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
-      return Pos(start.line, inWS ? 0 : firstNonWS);
-    }
-    return start;
-  }
-
-  function compareBidiLevel(order, a, b) {
-    var linedir = order[0].level;
-    if (a == linedir) return true;
-    if (b == linedir) return false;
-    return a < b;
-  }
-  var bidiOther;
-  function getBidiPartAt(order, pos) {
-    bidiOther = null;
-    for (var i = 0, found; i < order.length; ++i) {
-      var cur = order[i];
-      if (cur.from < pos && cur.to > pos) return i;
-      if ((cur.from == pos || cur.to == pos)) {
-        if (found == null) {
-          found = i;
-        } else if (compareBidiLevel(order, cur.level, order[found].level)) {
-          if (cur.from != cur.to) bidiOther = found;
-          return i;
-        } else {
-          if (cur.from != cur.to) bidiOther = i;
-          return found;
-        }
-      }
-    }
-    return found;
-  }
-
-  function moveInLine(line, pos, dir, byUnit) {
-    if (!byUnit) return pos + dir;
-    do pos += dir;
-    while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
-    return pos;
-  }
-
-  // This is needed in order to move 'visually' through bi-directional
-  // text -- i.e., pressing left should make the cursor go left, even
-  // when in RTL text. The tricky part is the 'jumps', where RTL and
-  // LTR text touch each other. This often requires the cursor offset
-  // to move more than one unit, in order to visually move one unit.
-  function moveVisually(line, start, dir, byUnit) {
-    var bidi = getOrder(line);
-    if (!bidi) return moveLogically(line, start, dir, byUnit);
-    var pos = getBidiPartAt(bidi, start), part = bidi[pos];
-    var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);
-
-    for (;;) {
-      if (target > part.from && target < part.to) return target;
-      if (target == part.from || target == part.to) {
-        if (getBidiPartAt(bidi, target) == pos) return target;
-        part = bidi[pos += dir];
-        return (dir > 0) == part.level % 2 ? part.to : part.from;
-      } else {
-        part = bidi[pos += dir];
-        if (!part) return null;
-        if ((dir > 0) == part.level % 2)
-          target = moveInLine(line, part.to, -1, byUnit);
-        else
-          target = moveInLine(line, part.from, 1, byUnit);
-      }
-    }
-  }
-
-  function moveLogically(line, start, dir, byUnit) {
-    var target = start + dir;
-    if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
-    return target < 0 || target > line.text.length ? null : target;
-  }
-
-  // Bidirectional ordering algorithm
-  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
-  // that this (partially) implements.
-
-  // One-char codes used for character types:
-  // L (L):   Left-to-Right
-  // R (R):   Right-to-Left
-  // r (AL):  Right-to-Left Arabic
-  // 1 (EN):  European Number
-  // + (ES):  European Number Separator
-  // % (ET):  European Number Terminator
-  // n (AN):  Arabic Number
-  // , (CS):  Common Number Separator
-  // m (NSM): Non-Spacing Mark
-  // b (BN):  Boundary Neutral
-  // s (B):   Paragraph Separator
-  // t (S):   Segment Separator
-  // w (WS):  Whitespace
-  // N (ON):  Other Neutrals
-
-  // Returns null if characters are ordered as they appear
-  // (left-to-right), or an array of sections ({from, to, level}
-  // objects) in the order in which they occur visually.
-  var bidiOrdering = (function() {
-    // Character types for codepoints 0 to 0xff
-    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
-    // Character types for codepoints 0x600 to 0x6ff
-    var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
-    function charType(code) {
-      if (code <= 0xf7) return lowTypes.charAt(code);
-      else if (0x590 <= code && code <= 0x5f4) return "R";
-      else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
-      else if (0x6ee <= code && code <= 0x8ac) return "r";
-      else if (0x2000 <= code && code <= 0x200b) return "w";
-      else if (code == 0x200c) return "b";
-      else return "L";
-    }
-
-    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
-    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
-    // Browsers seem to always treat the boundaries of block elements as being L.
-    var outerType = "L";
-
-    function BidiSpan(level, from, to) {
-      this.level = level;
-      this.from = from; this.to = to;
-    }
-
-    return function(str) {
-      if (!bidiRE.test(str)) return false;
-      var len = str.length, types = [];
-      for (var i = 0, type; i < len; ++i)
-        types.push(type = charType(str.charCodeAt(i)));
-
-      // W1. Examine each non-spacing mark (NSM) in the level run, and
-      // change the type of the NSM to the type of the previous
-      // character. If the NSM is at the start of the level run, it will
-      // get the type of sor.
-      for (var i = 0, prev = outerType; i < len; ++i) {
-        var type = types[i];
-        if (type == "m") types[i] = prev;
-        else prev = type;
-      }
-
-      // W2. Search backwards from each instance of a European number
-      // until the first strong type (R, L, AL, or sor) is found. If an
-      // AL is found, change the type of the European number to Arabic
-      // number.
-      // W3. Change all ALs to R.
-      for (var i = 0, cur = outerType; i < len; ++i) {
-        var type = types[i];
-        if (type == "1" && cur == "r") types[i] = "n";
-        else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
-      }
-
-      // W4. A single European separator between two European numbers
-      // changes to a European number. A single common separator between
-      // two numbers of the same type changes to that type.
-      for (var i = 1, prev = types[0]; i < len - 1; ++i) {
-        var type = types[i];
-        if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
-        else if (type == "," && prev == types[i+1] &&
-                 (prev == "1" || prev == "n")) types[i] = prev;
-        prev = type;
-      }
-
-      // W5. A sequence of European terminators adjacent to European
-      // numbers changes to all European numbers.
-      // W6. Otherwise, separators and terminators change to Other
-      // Neutral.
-      for (var i = 0; i < len; ++i) {
-        var type = types[i];
-        if (type == ",") types[i] = "N";
-        else if (type == "%") {
-          for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
-          var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
-          for (var j = i; j < end; ++j) types[j] = replace;
-          i = end - 1;
-        }
-      }
-
-      // W7. Search backwards from each instance of a European number
-      // until the first strong type (R, L, or sor) is found. If an L is
-      // found, then change the type of the European number to L.
-      for (var i = 0, cur = outerType; i < len; ++i) {
-        var type = types[i];
-        if (cur == "L" && type == "1") types[i] = "L";
-        else if (isStrong.test(type)) cur = type;
-      }
-
-      // N1. A sequence of neutrals takes the direction of the
-      // surrounding strong text if the text on both sides has the same
-      // direction. European and Arabic numbers act as if they were R in
-      // terms of their influence on neutrals. Start-of-level-run (sor)
-      // and end-of-level-run (eor) are used at level run boundaries.
-      // N2. Any remaining neutrals take the embedding direction.
-      for (var i = 0; i < len; ++i) {
-        if (isNeutral.test(types[i])) {
-          for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
-          var before = (i ? types[i-1] : outerType) == "L";
-          var after = (end < len ? types[end] : outerType) == "L";
-          var replace = before || after ? "L" : "R";
-          for (var j = i; j < end; ++j) types[j] = replace;
-          i = end - 1;
-        }
-      }
-
-      // Here we depart from the documented algorithm, in order to avoid
-      // building up an actual levels array. Since there are only three
-      // levels (0, 1, 2) in an implementation that doesn't take
-      // explicit embedding into account, we can build up the order on
-      // the fly, without following the level-based algorithm.
-      var order = [], m;
-      for (var i = 0; i < len;) {
-        if (countsAsLeft.test(types[i])) {
-          var start = i;
-          for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
-          order.push(new BidiSpan(0, start, i));
-        } else {
-          var pos = i, at = order.length;
-          for (++i; i < len && types[i] != "L"; ++i) {}
-          for (var j = pos; j < i;) {
-            if (countsAsNum.test(types[j])) {
-              if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
-              var nstart = j;
-              for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
-              order.splice(at, 0, new BidiSpan(2, nstart, j));
-              pos = j;
-            } else ++j;
-          }
-          if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
-        }
-      }
-      if (order[0].level == 1 && (m = str.match(/^\s+/))) {
-        order[0].from = m[0].length;
-        order.unshift(new BidiSpan(0, 0, m[0].length));
-      }
-      if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
-        lst(order).to -= m[0].length;
-        order.push(new BidiSpan(0, len - m[0].length, len));
-      }
-      if (order[0].level == 2)
-        order.unshift(new BidiSpan(1, order[0].to, order[0].to));
-      if (order[0].level != lst(order).level)
-        order.push(new BidiSpan(order[0].level, len, len));
-
-      return order;
-    };
-  })();
-
-  // THE END
-
-  CodeMirror.version = "5.7.1";
-
-  return CodeMirror;
-});
diff --git a/src/js/codemirror/continuelist.js b/src/js/codemirror/continuelist.js
deleted file mode 100644
index df5179f..0000000
--- a/src/js/codemirror/continuelist.js
+++ /dev/null
@@ -1,51 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  var listRE = /^(\s*)(>[> ]*|[*+-]\s|(\d+)([.)]))(\s*)/,
-      emptyListRE = /^(\s*)(>[> ]*|[*+-]|(\d+)[.)])(\s*)$/,
-      unorderedListRE = /[*+-]\s/;
-
-  CodeMirror.commands.newlineAndIndentContinueMarkdownList = function(cm) {
-    if (cm.getOption("disableInput")) return CodeMirror.Pass;
-    var ranges = cm.listSelections(), replacements = [];
-    for (var i = 0; i < ranges.length; i++) {
-      var pos = ranges[i].head;
-      var eolState = cm.getStateAfter(pos.line);
-      var inList = eolState.list !== false;
-      var inQuote = eolState.quote !== 0;
-
-      var line = cm.getLine(pos.line), match = listRE.exec(line);
-      if (!ranges[i].empty() || (!inList && !inQuote) || !match) {
-        cm.execCommand("newlineAndIndent");
-        return;
-      }
-      if (emptyListRE.test(line)) {
-        cm.replaceRange("", {
-          line: pos.line, ch: 0
-        }, {
-          line: pos.line, ch: pos.ch + 1
-        });
-        replacements[i] = "\n";
-      } else {
-        var indent = match[1], after = match[5];
-        var bullet = unorderedListRE.test(match[2]) || match[2].indexOf(">") >= 0
-          ? match[2]
-          : (parseInt(match[3], 10) + 1) + match[4];
-
-        replacements[i] = "\n" + indent + bullet + after;
-      }
-    }
-
-    cm.replaceSelections(replacements);
-  };
-});
diff --git a/src/js/codemirror/fullscreen.js b/src/js/codemirror/fullscreen.js
deleted file mode 100644
index cd3673b..0000000
--- a/src/js/codemirror/fullscreen.js
+++ /dev/null
@@ -1,41 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  CodeMirror.defineOption("fullScreen", false, function(cm, val, old) {
-    if (old == CodeMirror.Init) old = false;
-    if (!old == !val) return;
-    if (val) setFullscreen(cm);
-    else setNormal(cm);
-  });
-
-  function setFullscreen(cm) {
-    var wrap = cm.getWrapperElement();
-    cm.state.fullScreenRestore = {scrollTop: window.pageYOffset, scrollLeft: window.pageXOffset,
-                                  width: wrap.style.width, height: wrap.style.height};
-    wrap.style.width = "";
-    wrap.style.height = "auto";
-    wrap.className += " CodeMirror-fullscreen";
-    document.documentElement.style.overflow = "hidden";
-    cm.refresh();
-  }
-
-  function setNormal(cm) {
-    var wrap = cm.getWrapperElement();
-    wrap.className = wrap.className.replace(/\s*CodeMirror-fullscreen\b/, "");
-    document.documentElement.style.overflow = "";
-    var info = cm.state.fullScreenRestore;
-    wrap.style.width = info.width; wrap.style.height = info.height;
-    window.scrollTo(info.scrollLeft, info.scrollTop);
-    cm.refresh();
-  }
-});
diff --git a/src/js/codemirror/gfm.js b/src/js/codemirror/gfm.js
deleted file mode 100644
index 6e74ad4..0000000
--- a/src/js/codemirror/gfm.js
+++ /dev/null
@@ -1,130 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"), require("../markdown/markdown"), require("../../addon/mode/overlay"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror", "../markdown/markdown", "../../addon/mode/overlay"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-var urlRE = /^((?:(?:aaas?|about|acap|adiumxtra|af[ps]|aim|apt|attachment|aw|beshare|bitcoin|bolo|callto|cap|chrome(?:-extension)?|cid|coap|com-eventbrite-attendee|content|crid|cvs|data|dav|dict|dlna-(?:playcontainer|playsingle)|dns|doi|dtn|dvb|ed2k|facetime|feed|file|finger|fish|ftp|geo|gg|git|gizmoproject|go|gopher|gtalk|h323|hcp|https?|iax|icap|icon|im|imap|info|ipn|ipp|irc[6s]?|iris(?:\.beep|\.lwz|\.xpc|\.xpcs)?|itms|jar|javascript|jms|keyparc|lastfm|ldaps?|magnet|mailto|maps|market|message|mid|mms|ms-help|msnim|msrps?|mtqp|mumble|mupdate|mvn|news|nfs|nih?|nntp|notes|oid|opaquelocktoken|palm|paparazzi|platform|pop|pres|proxy|psyc|query|res(?:ource)?|rmi|rsync|rtmp|rtsp|secondlife|service|session|sftp|sgn|shttp|sieve|sips?|skype|sm[bs]|snmp|soap\.beeps?|soldat|spotify|ssh|steam|svn|tag|teamspeak|tel(?:net)?|tftp|things|thismessage|tip|tn3270|tv|udp|unreal|urn|ut2004|vemmi|ventrilo|view-source|webcal|wss?|wtai|wyciwyg|xcon(?:-userid)?|xfire|xmlrpc\.beeps?|xmpp|xri|ymsgr|z39\.50[rs]?):(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]|\([^\s()<>]*\))+(?:\([^\s()<>]*\)|[^\s`*!()\[\]{};:'".,<>?«»“”‘’]))/i
-
-CodeMirror.defineMode("gfm", function(config, modeConfig) {
-  var codeDepth = 0;
-  function blankLine(state) {
-    state.code = false;
-    return null;
-  }
-  var gfmOverlay = {
-    startState: function() {
-      return {
-        code: false,
-        codeBlock: false,
-        ateSpace: false
-      };
-    },
-    copyState: function(s) {
-      return {
-        code: s.code,
-        codeBlock: s.codeBlock,
-        ateSpace: s.ateSpace
-      };
-    },
-    token: function(stream, state) {
-      state.combineTokens = null;
-
-      // Hack to prevent formatting override inside code blocks (block and inline)
-      if (state.codeBlock) {
-        if (stream.match(/^```+/)) {
-          state.codeBlock = false;
-          return null;
-        }
-        stream.skipToEnd();
-        return null;
-      }
-      if (stream.sol()) {
-        state.code = false;
-      }
-      if (stream.sol() && stream.match(/^```+/)) {
-        stream.skipToEnd();
-        state.codeBlock = true;
-        return null;
-      }
-      // If this block is changed, it may need to be updated in Markdown mode
-      if (stream.peek() === '`') {
-        stream.next();
-        var before = stream.pos;
-        stream.eatWhile('`');
-        var difference = 1 + stream.pos - before;
-        if (!state.code) {
-          codeDepth = difference;
-          state.code = true;
-        } else {
-          if (difference === codeDepth) { // Must be exact
-            state.code = false;
-          }
-        }
-        return null;
-      } else if (state.code) {
-        stream.next();
-        return null;
-      }
-      // Check if space. If so, links can be formatted later on
-      if (stream.eatSpace()) {
-        state.ateSpace = true;
-        return null;
-      }
-      if (stream.sol() || state.ateSpace) {
-        state.ateSpace = false;
-        if (modeConfig.gitHubSpice !== false) {
-          if(stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+@)?(?:[a-f0-9]{7,40}\b)/)) {
-            // User/Project@SHA
-            // User@SHA
-            // SHA
-            state.combineTokens = true;
-            return "link";
-          } else if (stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+)?#[0-9]+\b/)) {
-            // User/Project#Num
-            // User#Num
-            // #Num
-            state.combineTokens = true;
-            return "link";
-          }
-        }
-      }
-      if (stream.match(urlRE) &&
-          stream.string.slice(stream.start - 2, stream.start) != "](" &&
-          (stream.start == 0 || /\W/.test(stream.string.charAt(stream.start - 1)))) {
-        // URLs
-        // Taken from http://daringfireball.net/2010/07/improved_regex_for_matching_urls
-        // And then (issue #1160) simplified to make it not crash the Chrome Regexp engine
-        // And then limited url schemes to the CommonMark list, so foo:bar isn't matched as a URL
-        state.combineTokens = true;
-        return "link";
-      }
-      stream.next();
-      return null;
-    },
-    blankLine: blankLine
-  };
-
-  var markdownConfig = {
-    underscoresBreakWords: false,
-    taskLists: true,
-    fencedCodeBlocks: '```',
-    strikethrough: true
-  };
-  for (var attr in modeConfig) {
-    markdownConfig[attr] = modeConfig[attr];
-  }
-  markdownConfig.name = "markdown";
-  return CodeMirror.overlayMode(CodeMirror.getMode(config, markdownConfig), gfmOverlay);
-
-}, "markdown");
-
-  CodeMirror.defineMIME("text/x-gfm", "gfm");
-});
diff --git a/src/js/codemirror/markdown.js b/src/js/codemirror/markdown.js
deleted file mode 100644
index 9d40368..0000000
--- a/src/js/codemirror/markdown.js
+++ /dev/null
@@ -1,792 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"), require("../xml/xml"), require("../meta"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror", "../xml/xml", "../meta"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
-
-  var htmlFound = CodeMirror.modes.hasOwnProperty("xml");
-  var htmlMode = CodeMirror.getMode(cmCfg, htmlFound ? {name: "xml", htmlMode: true} : "text/plain");
-
-  function getMode(name) {
-    if (CodeMirror.findModeByName) {
-      var found = CodeMirror.findModeByName(name);
-      if (found) name = found.mime || found.mimes[0];
-    }
-    var mode = CodeMirror.getMode(cmCfg, name);
-    return mode.name == "null" ? null : mode;
-  }
-
-  // Should characters that affect highlighting be highlighted separate?
-  // Does not include characters that will be output (such as `1.` and `-` for lists)
-  if (modeCfg.highlightFormatting === undefined)
-    modeCfg.highlightFormatting = false;
-
-  // Maximum number of nested blockquotes. Set to 0 for infinite nesting.
-  // Excess `>` will emit `error` token.
-  if (modeCfg.maxBlockquoteDepth === undefined)
-    modeCfg.maxBlockquoteDepth = 0;
-
-  // Should underscores in words open/close em/strong?
-  if (modeCfg.underscoresBreakWords === undefined)
-    modeCfg.underscoresBreakWords = true;
-
-  // Use `fencedCodeBlocks` to configure fenced code blocks. false to
-  // disable, string to specify a precise regexp that the fence should
-  // match, and true to allow three or more backticks or tildes (as
-  // per CommonMark).
-
-  // Turn on task lists? ("- [ ] " and "- [x] ")
-  if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;
-
-  // Turn on strikethrough syntax
-  if (modeCfg.strikethrough === undefined)
-    modeCfg.strikethrough = false;
-
-  var codeDepth = 0;
-
-  var header   = 'header'
-  ,   code     = 'comment'
-  ,   quote    = 'quote'
-  ,   list1    = 'variable-2'
-  ,   list2    = 'variable-3'
-  ,   list3    = 'keyword'
-  ,   hr       = 'hr'
-  ,   image    = 'tag'
-  ,   formatting = 'formatting'
-  ,   linkinline = 'link'
-  ,   linkemail = 'link'
-  ,   linktext = 'link'
-  ,   linkhref = 'string'
-  ,   em       = 'em'
-  ,   strong   = 'strong'
-  ,   strikethrough = 'strikethrough';
-
-  var hrRE = /^([*\-_])(?:\s*\1){2,}\s*$/
-  ,   ulRE = /^[*\-+]\s+/
-  ,   olRE = /^[0-9]+([.)])\s+/
-  ,   taskListRE = /^\[(x| )\](?=\s)/ // Must follow ulRE or olRE
-  ,   atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: |$)/
-  ,   setextHeaderRE = /^ *(?:\={1,}|-{1,})\s*$/
-  ,   textRE = /^[^#!\[\]*_\\<>` "'(~]+/
-  ,   fencedCodeRE = new RegExp("^(" + (modeCfg.fencedCodeBlocks === true ? "~~~+|```+" : modeCfg.fencedCodeBlocks) +
-                                ")[ \\t]*([\\w+#]*)");
-
-  function switchInline(stream, state, f) {
-    state.f = state.inline = f;
-    return f(stream, state);
-  }
-
-  function switchBlock(stream, state, f) {
-    state.f = state.block = f;
-    return f(stream, state);
-  }
-
-  function lineIsEmpty(line) {
-    return !line || !/\S/.test(line.string)
-  }
-
-  // Blocks
-
-  function blankLine(state) {
-    // Reset linkTitle state
-    state.linkTitle = false;
-    // Reset EM state
-    state.em = false;
-    // Reset STRONG state
-    state.strong = false;
-    // Reset strikethrough state
-    state.strikethrough = false;
-    // Reset state.quote
-    state.quote = 0;
-    // Reset state.indentedCode
-    state.indentedCode = false;
-    if (!htmlFound && state.f == htmlBlock) {
-      state.f = inlineNormal;
-      state.block = blockNormal;
-    }
-    // Reset state.trailingSpace
-    state.trailingSpace = 0;
-    state.trailingSpaceNewLine = false;
-    // Mark this line as blank
-    state.prevLine = state.thisLine
-    state.thisLine = null
-    return null;
-  }
-
-  function blockNormal(stream, state) {
-
-    var sol = stream.sol();
-
-    var prevLineIsList = state.list !== false,
-        prevLineIsIndentedCode = state.indentedCode;
-
-    state.indentedCode = false;
-
-    if (prevLineIsList) {
-      if (state.indentationDiff >= 0) { // Continued list
-        if (state.indentationDiff < 4) { // Only adjust indentation if *not* a code block
-          state.indentation -= state.indentationDiff;
-        }
-        state.list = null;
-      } else if (state.indentation > 0) {
-        state.list = null;
-        state.listDepth = Math.floor(state.indentation / 4);
-      } else { // No longer a list
-        state.list = false;
-        state.listDepth = 0;
-      }
-    }
-
-    var match = null;
-    if (state.indentationDiff >= 4) {
-      stream.skipToEnd();
-      if (prevLineIsIndentedCode || lineIsEmpty(state.prevLine)) {
-        state.indentation -= 4;
-        state.indentedCode = true;
-        return code;
-      } else {
-        return null;
-      }
-    } else if (stream.eatSpace()) {
-      return null;
-    } else if ((match = stream.match(atxHeaderRE)) && match[1].length <= 6) {
-      state.header = match[1].length;
-      if (modeCfg.highlightFormatting) state.formatting = "header";
-      state.f = state.inline;
-      return getType(state);
-    } else if (!lineIsEmpty(state.prevLine) && !state.quote && !prevLineIsList &&
-               !prevLineIsIndentedCode && (match = stream.match(setextHeaderRE))) {
-      state.header = match[0].charAt(0) == '=' ? 1 : 2;
-      if (modeCfg.highlightFormatting) state.formatting = "header";
-      state.f = state.inline;
-      return getType(state);
-    } else if (stream.eat('>')) {
-      state.quote = sol ? 1 : state.quote + 1;
-      if (modeCfg.highlightFormatting) state.formatting = "quote";
-      stream.eatSpace();
-      return getType(state);
-    } else if (stream.peek() === '[') {
-      return switchInline(stream, state, footnoteLink);
-    } else if (stream.match(hrRE, true)) {
-      state.hr = true;
-      return hr;
-    } else if ((lineIsEmpty(state.prevLine) || prevLineIsList) && (stream.match(ulRE, false) || stream.match(olRE, false))) {
-      var listType = null;
-      if (stream.match(ulRE, true)) {
-        listType = 'ul';
-      } else {
-        stream.match(olRE, true);
-        listType = 'ol';
-      }
-      state.indentation = stream.column() + stream.current().length;
-      state.list = true;
-      state.listDepth++;
-      if (modeCfg.taskLists && stream.match(taskListRE, false)) {
-        state.taskList = true;
-      }
-      state.f = state.inline;
-      if (modeCfg.highlightFormatting) state.formatting = ["list", "list-" + listType];
-      return getType(state);
-    } else if (modeCfg.fencedCodeBlocks && (match = stream.match(fencedCodeRE, true))) {
-      state.fencedChars = match[1]
-      // try switching mode
-      state.localMode = getMode(match[2]);
-      if (state.localMode) state.localState = state.localMode.startState();
-      state.f = state.block = local;
-      if (modeCfg.highlightFormatting) state.formatting = "code-block";
-      state.code = true;
-      return getType(state);
-    }
-
-    return switchInline(stream, state, state.inline);
-  }
-
-  function htmlBlock(stream, state) {
-    var style = htmlMode.token(stream, state.htmlState);
-    if ((htmlFound && state.htmlState.tagStart === null &&
-         (!state.htmlState.context && state.htmlState.tokenize.isInText)) ||
-        (state.md_inside && stream.current().indexOf(">") > -1)) {
-      state.f = inlineNormal;
-      state.block = blockNormal;
-      state.htmlState = null;
-    }
-    return style;
-  }
-
-  function local(stream, state) {
-    if (stream.sol() && state.fencedChars && stream.match(state.fencedChars, false)) {
-      state.localMode = state.localState = null;
-      state.f = state.block = leavingLocal;
-      return null;
-    } else if (state.localMode) {
-      return state.localMode.token(stream, state.localState);
-    } else {
-      stream.skipToEnd();
-      return code;
-    }
-  }
-
-  function leavingLocal(stream, state) {
-    stream.match(state.fencedChars);
-    state.block = blockNormal;
-    state.f = inlineNormal;
-    state.fencedChars = null;
-    if (modeCfg.highlightFormatting) state.formatting = "code-block";
-    state.code = true;
-    var returnType = getType(state);
-    state.code = false;
-    return returnType;
-  }
-
-  // Inline
-  function getType(state) {
-    var styles = [];
-
-    if (state.formatting) {
-      styles.push(formatting);
-
-      if (typeof state.formatting === "string") state.formatting = [state.formatting];
-
-      for (var i = 0; i < state.formatting.length; i++) {
-        styles.push(formatting + "-" + state.formatting[i]);
-
-        if (state.formatting[i] === "header") {
-          styles.push(formatting + "-" + state.formatting[i] + "-" + state.header);
-        }
-
-        // Add `formatting-quote` and `formatting-quote-#` for blockquotes
-        // Add `error` instead if the maximum blockquote nesting depth is passed
-        if (state.formatting[i] === "quote") {
-          if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
-            styles.push(formatting + "-" + state.formatting[i] + "-" + state.quote);
-          } else {
-            styles.push("error");
-          }
-        }
-      }
-    }
-
-    if (state.taskOpen) {
-      styles.push("meta");
-      return styles.length ? styles.join(' ') : null;
-    }
-    if (state.taskClosed) {
-      styles.push("property");
-      return styles.length ? styles.join(' ') : null;
-    }
-
-    if (state.linkHref) {
-      styles.push(linkhref, "url");
-    } else { // Only apply inline styles to non-url text
-      if (state.strong) { styles.push(strong); }
-      if (state.em) { styles.push(em); }
-      if (state.strikethrough) { styles.push(strikethrough); }
-
-      if (state.linkText) { styles.push(linktext); }
-
-      if (state.code) { styles.push(code); }
-    }
-
-    if (state.header) { styles.push(header); styles.push(header + "-" + state.header); }
-
-    if (state.quote) {
-      styles.push(quote);
-
-      // Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth
-      if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
-        styles.push(quote + "-" + state.quote);
-      } else {
-        styles.push(quote + "-" + modeCfg.maxBlockquoteDepth);
-      }
-    }
-
-    if (state.list !== false) {
-      var listMod = (state.listDepth - 1) % 3;
-      if (!listMod) {
-        styles.push(list1);
-      } else if (listMod === 1) {
-        styles.push(list2);
-      } else {
-        styles.push(list3);
-      }
-    }
-
-    if (state.trailingSpaceNewLine) {
-      styles.push("trailing-space-new-line");
-    } else if (state.trailingSpace) {
-      styles.push("trailing-space-" + (state.trailingSpace % 2 ? "a" : "b"));
-    }
-
-    return styles.length ? styles.join(' ') : null;
-  }
-
-  function handleText(stream, state) {
-    if (stream.match(textRE, true)) {
-      return getType(state);
-    }
-    return undefined;
-  }
-
-  function inlineNormal(stream, state) {
-    var style = state.text(stream, state);
-    if (typeof style !== 'undefined')
-      return style;
-
-    if (state.list) { // List marker (*, +, -, 1., etc)
-      state.list = null;
-      return getType(state);
-    }
-
-    if (state.taskList) {
-      var taskOpen = stream.match(taskListRE, true)[1] !== "x";
-      if (taskOpen) state.taskOpen = true;
-      else state.taskClosed = true;
-      if (modeCfg.highlightFormatting) state.formatting = "task";
-      state.taskList = false;
-      return getType(state);
-    }
-
-    state.taskOpen = false;
-    state.taskClosed = false;
-
-    if (state.header && stream.match(/^#+$/, true)) {
-      if (modeCfg.highlightFormatting) state.formatting = "header";
-      return getType(state);
-    }
-
-    // Get sol() value now, before character is consumed
-    var sol = stream.sol();
-
-    var ch = stream.next();
-
-    if (ch === '\\') {
-      stream.next();
-      if (modeCfg.highlightFormatting) {
-        var type = getType(state);
-        return type ? type + " formatting-escape" : "formatting-escape";
-      }
-    }
-
-    // Matches link titles present on next line
-    if (state.linkTitle) {
-      state.linkTitle = false;
-      var matchCh = ch;
-      if (ch === '(') {
-        matchCh = ')';
-      }
-      matchCh = (matchCh+'').replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
-      var regex = '^\\s*(?:[^' + matchCh + '\\\\]+|\\\\\\\\|\\\\.)' + matchCh;
-      if (stream.match(new RegExp(regex), true)) {
-        return linkhref;
-      }
-    }
-
-    // If this block is changed, it may need to be updated in GFM mode
-    if (ch === '`') {
-      var previousFormatting = state.formatting;
-      if (modeCfg.highlightFormatting) state.formatting = "code";
-      var t = getType(state);
-      var before = stream.pos;
-      stream.eatWhile('`');
-      var difference = 1 + stream.pos - before;
-      if (!state.code) {
-        codeDepth = difference;
-        state.code = true;
-        return getType(state);
-      } else {
-        if (difference === codeDepth) { // Must be exact
-          state.code = false;
-          return t;
-        }
-        state.formatting = previousFormatting;
-        return getType(state);
-      }
-    } else if (state.code) {
-      return getType(state);
-    }
-
-    if (ch === '!' && stream.match(/\[[^\]]*\] ?(?:\(|\[)/, false)) {
-      stream.match(/\[[^\]]*\]/);
-      state.inline = state.f = linkHref;
-      return image;
-    }
-
-    if (ch === '[' && stream.match(/.*\](\(.*\)| ?\[.*\])/, false)) {
-      state.linkText = true;
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      return getType(state);
-    }
-
-    if (ch === ']' && state.linkText && stream.match(/\(.*\)| ?\[.*\]/, false)) {
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      var type = getType(state);
-      state.linkText = false;
-      state.inline = state.f = linkHref;
-      return type;
-    }
-
-    if (ch === '<' && stream.match(/^(https?|ftps?):\/\/(?:[^\\>]|\\.)+>/, false)) {
-      state.f = state.inline = linkInline;
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      var type = getType(state);
-      if (type){
-        type += " ";
-      } else {
-        type = "";
-      }
-      return type + linkinline;
-    }
-
-    if (ch === '<' && stream.match(/^[^> \\]+@(?:[^\\>]|\\.)+>/, false)) {
-      state.f = state.inline = linkInline;
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      var type = getType(state);
-      if (type){
-        type += " ";
-      } else {
-        type = "";
-      }
-      return type + linkemail;
-    }
-
-    if (ch === '<' && stream.match(/^(!--|\w)/, false)) {
-      var end = stream.string.indexOf(">", stream.pos);
-      if (end != -1) {
-        var atts = stream.string.substring(stream.start, end);
-        if (/markdown\s*=\s*('|"){0,1}1('|"){0,1}/.test(atts)) state.md_inside = true;
-      }
-      stream.backUp(1);
-      state.htmlState = CodeMirror.startState(htmlMode);
-      return switchBlock(stream, state, htmlBlock);
-    }
-
-    if (ch === '<' && stream.match(/^\/\w*?>/)) {
-      state.md_inside = false;
-      return "tag";
-    }
-
-    var ignoreUnderscore = false;
-    if (!modeCfg.underscoresBreakWords) {
-      if (ch === '_' && stream.peek() !== '_' && stream.match(/(\w)/, false)) {
-        var prevPos = stream.pos - 2;
-        if (prevPos >= 0) {
-          var prevCh = stream.string.charAt(prevPos);
-          if (prevCh !== '_' && prevCh.match(/(\w)/, false)) {
-            ignoreUnderscore = true;
-          }
-        }
-      }
-    }
-    if (ch === '*' || (ch === '_' && !ignoreUnderscore)) {
-      if (sol && stream.peek() === ' ') {
-        // Do nothing, surrounded by newline and space
-      } else if (state.strong === ch && stream.eat(ch)) { // Remove STRONG
-        if (modeCfg.highlightFormatting) state.formatting = "strong";
-        var t = getType(state);
-        state.strong = false;
-        return t;
-      } else if (!state.strong && stream.eat(ch)) { // Add STRONG
-        state.strong = ch;
-        if (modeCfg.highlightFormatting) state.formatting = "strong";
-        return getType(state);
-      } else if (state.em === ch) { // Remove EM
-        if (modeCfg.highlightFormatting) state.formatting = "em";
-        var t = getType(state);
-        state.em = false;
-        return t;
-      } else if (!state.em) { // Add EM
-        state.em = ch;
-        if (modeCfg.highlightFormatting) state.formatting = "em";
-        return getType(state);
-      }
-    } else if (ch === ' ') {
-      if (stream.eat('*') || stream.eat('_')) { // Probably surrounded by spaces
-        if (stream.peek() === ' ') { // Surrounded by spaces, ignore
-          return getType(state);
-        } else { // Not surrounded by spaces, back up pointer
-          stream.backUp(1);
-        }
-      }
-    }
-
-    if (modeCfg.strikethrough) {
-      if (ch === '~' && stream.eatWhile(ch)) {
-        if (state.strikethrough) {// Remove strikethrough
-          if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
-          var t = getType(state);
-          state.strikethrough = false;
-          return t;
-        } else if (stream.match(/^[^\s]/, false)) {// Add strikethrough
-          state.strikethrough = true;
-          if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
-          return getType(state);
-        }
-      } else if (ch === ' ') {
-        if (stream.match(/^~~/, true)) { // Probably surrounded by space
-          if (stream.peek() === ' ') { // Surrounded by spaces, ignore
-            return getType(state);
-          } else { // Not surrounded by spaces, back up pointer
-            stream.backUp(2);
-          }
-        }
-      }
-    }
-
-    if (ch === ' ') {
-      if (stream.match(/ +$/, false)) {
-        state.trailingSpace++;
-      } else if (state.trailingSpace) {
-        state.trailingSpaceNewLine = true;
-      }
-    }
-
-    return getType(state);
-  }
-
-  function linkInline(stream, state) {
-    var ch = stream.next();
-
-    if (ch === ">") {
-      state.f = state.inline = inlineNormal;
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      var type = getType(state);
-      if (type){
-        type += " ";
-      } else {
-        type = "";
-      }
-      return type + linkinline;
-    }
-
-    stream.match(/^[^>]+/, true);
-
-    return linkinline;
-  }
-
-  function linkHref(stream, state) {
-    // Check if space, and return NULL if so (to avoid marking the space)
-    if(stream.eatSpace()){
-      return null;
-    }
-    var ch = stream.next();
-    if (ch === '(' || ch === '[') {
-      state.f = state.inline = getLinkHrefInside(ch === "(" ? ")" : "]");
-      if (modeCfg.highlightFormatting) state.formatting = "link-string";
-      state.linkHref = true;
-      return getType(state);
-    }
-    return 'error';
-  }
-
-  function getLinkHrefInside(endChar) {
-    return function(stream, state) {
-      var ch = stream.next();
-
-      if (ch === endChar) {
-        state.f = state.inline = inlineNormal;
-        if (modeCfg.highlightFormatting) state.formatting = "link-string";
-        var returnState = getType(state);
-        state.linkHref = false;
-        return returnState;
-      }
-
-      if (stream.match(inlineRE(endChar), true)) {
-        stream.backUp(1);
-      }
-
-      state.linkHref = true;
-      return getType(state);
-    };
-  }
-
-  function footnoteLink(stream, state) {
-    if (stream.match(/^[^\]]*\]:/, false)) {
-      state.f = footnoteLinkInside;
-      stream.next(); // Consume [
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      state.linkText = true;
-      return getType(state);
-    }
-    return switchInline(stream, state, inlineNormal);
-  }
-
-  function footnoteLinkInside(stream, state) {
-    if (stream.match(/^\]:/, true)) {
-      state.f = state.inline = footnoteUrl;
-      if (modeCfg.highlightFormatting) state.formatting = "link";
-      var returnType = getType(state);
-      state.linkText = false;
-      return returnType;
-    }
-
-    stream.match(/^[^\]]+/, true);
-
-    return linktext;
-  }
-
-  function footnoteUrl(stream, state) {
-    // Check if space, and return NULL if so (to avoid marking the space)
-    if(stream.eatSpace()){
-      return null;
-    }
-    // Match URL
-    stream.match(/^[^\s]+/, true);
-    // Check for link title
-    if (stream.peek() === undefined) { // End of line, set flag to check next line
-      state.linkTitle = true;
-    } else { // More content on line, check if link title
-      stream.match(/^(?:\s+(?:"(?:[^"\\]|\\\\|\\.)+"|'(?:[^'\\]|\\\\|\\.)+'|\((?:[^)\\]|\\\\|\\.)+\)))?/, true);
-    }
-    state.f = state.inline = inlineNormal;
-    return linkhref + " url";
-  }
-
-  var savedInlineRE = [];
-  function inlineRE(endChar) {
-    if (!savedInlineRE[endChar]) {
-      // Escape endChar for RegExp (taken from http://stackoverflow.com/a/494122/526741)
-      endChar = (endChar+'').replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
-      // Match any non-endChar, escaped character, as well as the closing
-      // endChar.
-      savedInlineRE[endChar] = new RegExp('^(?:[^\\\\]|\\\\.)*?(' + endChar + ')');
-    }
-    return savedInlineRE[endChar];
-  }
-
-  var mode = {
-    startState: function() {
-      return {
-        f: blockNormal,
-
-        prevLine: null,
-        thisLine: null,
-
-        block: blockNormal,
-        htmlState: null,
-        indentation: 0,
-
-        inline: inlineNormal,
-        text: handleText,
-
-        formatting: false,
-        linkText: false,
-        linkHref: false,
-        linkTitle: false,
-        em: false,
-        strong: false,
-        header: 0,
-        hr: false,
-        taskList: false,
-        list: false,
-        listDepth: 0,
-        quote: 0,
-        trailingSpace: 0,
-        trailingSpaceNewLine: false,
-        strikethrough: false,
-        fencedChars: null
-      };
-    },
-
-    copyState: function(s) {
-      return {
-        f: s.f,
-
-        prevLine: s.prevLine,
-        thisLine: s.this,
-
-        block: s.block,
-        htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),
-        indentation: s.indentation,
-
-        localMode: s.localMode,
-        localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,
-
-        inline: s.inline,
-        text: s.text,
-        formatting: false,
-        linkTitle: s.linkTitle,
-        code: s.code,
-        em: s.em,
-        strong: s.strong,
-        strikethrough: s.strikethrough,
-        header: s.header,
-        hr: s.hr,
-        taskList: s.taskList,
-        list: s.list,
-        listDepth: s.listDepth,
-        quote: s.quote,
-        indentedCode: s.indentedCode,
-        trailingSpace: s.trailingSpace,
-        trailingSpaceNewLine: s.trailingSpaceNewLine,
-        md_inside: s.md_inside,
-        fencedChars: s.fencedChars
-      };
-    },
-
-    token: function(stream, state) {
-
-      // Reset state.formatting
-      state.formatting = false;
-
-      if (stream != state.thisLine) {
-        var forceBlankLine = state.header || state.hr;
-
-        // Reset state.header and state.hr
-        state.header = 0;
-        state.hr = false;
-
-        if (stream.match(/^\s*$/, true) || forceBlankLine) {
-          blankLine(state);
-          if (!forceBlankLine) return null
-          state.prevLine = null
-        }
-
-        state.prevLine = state.thisLine
-        state.thisLine = stream
-
-        // Reset state.taskList
-        state.taskList = false;
-
-        // Reset state.trailingSpace
-        state.trailingSpace = 0;
-        state.trailingSpaceNewLine = false;
-
-        state.f = state.block;
-        var indentation = stream.match(/^\s*/, true)[0].replace(/\t/g, '    ').length;
-        var difference = Math.floor((indentation - state.indentation) / 4) * 4;
-        if (difference > 4) difference = 4;
-        var adjustedIndentation = state.indentation + difference;
-        state.indentationDiff = adjustedIndentation - state.indentation;
-        state.indentation = adjustedIndentation;
-        if (indentation > 0) return null;
-      }
-      return state.f(stream, state);
-    },
-
-    innerMode: function(state) {
-      if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};
-      if (state.localState) return {state: state.localState, mode: state.localMode};
-      return {state: state, mode: mode};
-    },
-
-    blankLine: blankLine,
-
-    getType: getType,
-
-    fold: "markdown"
-  };
-  return mode;
-}, "xml");
-
-CodeMirror.defineMIME("text/x-markdown", "markdown");
-
-});
diff --git a/src/js/codemirror/overlay.js b/src/js/codemirror/overlay.js
deleted file mode 100644
index e1b9ed3..0000000
--- a/src/js/codemirror/overlay.js
+++ /dev/null
@@ -1,85 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-// Utility function that allows modes to be combined. The mode given
-// as the base argument takes care of most of the normal mode
-// functionality, but a second (typically simple) mode is used, which
-// can override the style of text. Both modes get to parse all of the
-// text, but when both assign a non-null style to a piece of code, the
-// overlay wins, unless the combine argument was true and not overridden,
-// or state.overlay.combineTokens was true, in which case the styles are
-// combined.
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-CodeMirror.overlayMode = function(base, overlay, combine) {
-  return {
-    startState: function() {
-      return {
-        base: CodeMirror.startState(base),
-        overlay: CodeMirror.startState(overlay),
-        basePos: 0, baseCur: null,
-        overlayPos: 0, overlayCur: null,
-        streamSeen: null
-      };
-    },
-    copyState: function(state) {
-      return {
-        base: CodeMirror.copyState(base, state.base),
-        overlay: CodeMirror.copyState(overlay, state.overlay),
-        basePos: state.basePos, baseCur: null,
-        overlayPos: state.overlayPos, overlayCur: null
-      };
-    },
-
-    token: function(stream, state) {
-      if (stream != state.streamSeen ||
-          Math.min(state.basePos, state.overlayPos) < stream.start) {
-        state.streamSeen = stream;
-        state.basePos = state.overlayPos = stream.start;
-      }
-
-      if (stream.start == state.basePos) {
-        state.baseCur = base.token(stream, state.base);
-        state.basePos = stream.pos;
-      }
-      if (stream.start == state.overlayPos) {
-        stream.pos = stream.start;
-        state.overlayCur = overlay.token(stream, state.overlay);
-        state.overlayPos = stream.pos;
-      }
-      stream.pos = Math.min(state.basePos, state.overlayPos);
-
-      // state.overlay.combineTokens always takes precedence over combine,
-      // unless set to null
-      if (state.overlayCur == null) return state.baseCur;
-      else if (state.baseCur != null &&
-               state.overlay.combineTokens ||
-               combine && state.overlay.combineTokens == null)
-        return state.baseCur + " " + state.overlayCur;
-      else return state.overlayCur;
-    },
-
-    indent: base.indent && function(state, textAfter) {
-      return base.indent(state.base, textAfter);
-    },
-    electricChars: base.electricChars,
-
-    innerMode: function(state) { return {state: state.base, mode: base}; },
-
-    blankLine: function(state) {
-      if (base.blankLine) base.blankLine(state.base);
-      if (overlay.blankLine) overlay.blankLine(state.overlay);
-    }
-  };
-};
-
-});
diff --git a/src/js/codemirror/tablist.js b/src/js/codemirror/tablist.js
deleted file mode 100644
index 930e58b..0000000
--- a/src/js/codemirror/tablist.js
+++ /dev/null
@@ -1,53 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-	mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-	define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-	mod(CodeMirror);
-})(function(CodeMirror) {
-  "use strict";
-
-  CodeMirror.commands.tabAndIndentMarkdownList = function(cm) {
-	var ranges = cm.listSelections();
-	  var pos = ranges[0].head;
-	  var eolState = cm.getStateAfter(pos.line);
-	  var inList = eolState.list !== false;
-
-	  if (inList) {
-		cm.execCommand('indentMore');
-		return;
-	  }
-
-	  if(cm.options.indentWithTabs){
-		cm.execCommand('insertTab');
-	  }
-	  else{
-		var spaces = Array(cm.options.tabSize + 1).join(" ");
-		cm.replaceSelection(spaces);
-	  }
-  };
-
-  CodeMirror.commands.shiftTabAndUnindentMarkdownList = function(cm) {
-	var ranges = cm.listSelections();
-	var pos = ranges[0].head;
-	var eolState = cm.getStateAfter(pos.line);
-	var inList = eolState.list !== false;
-
-	if (inList) {
-	  cm.execCommand('indentLess');
-	  return;
-	}
-
-	if(cm.options.indentWithTabs){
-	  cm.execCommand('insertTab');
-	}
-	else{
-	  var spaces = Array(cm.options.tabSize + 1).join(" ");
-	  cm.replaceSelection(spaces);
-	}
-  };
-});
\ No newline at end of file
diff --git a/src/js/codemirror/xml.js b/src/js/codemirror/xml.js
deleted file mode 100644
index 5ad2172..0000000
--- a/src/js/codemirror/xml.js
+++ /dev/null
@@ -1,385 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-CodeMirror.defineMode("xml", function(config, parserConfig) {
-  var indentUnit = config.indentUnit;
-  var multilineTagIndentFactor = parserConfig.multilineTagIndentFactor || 1;
-  var multilineTagIndentPastTag = parserConfig.multilineTagIndentPastTag;
-  if (multilineTagIndentPastTag == null) multilineTagIndentPastTag = true;
-
-  var Kludges = parserConfig.htmlMode ? {
-    autoSelfClosers: {'area': true, 'base': true, 'br': true, 'col': true, 'command': true,
-                      'embed': true, 'frame': true, 'hr': true, 'img': true, 'input': true,
-                      'keygen': true, 'link': true, 'meta': true, 'param': true, 'source': true,
-                      'track': true, 'wbr': true, 'menuitem': true},
-    implicitlyClosed: {'dd': true, 'li': true, 'optgroup': true, 'option': true, 'p': true,
-                       'rp': true, 'rt': true, 'tbody': true, 'td': true, 'tfoot': true,
-                       'th': true, 'tr': true},
-    contextGrabbers: {
-      'dd': {'dd': true, 'dt': true},
-      'dt': {'dd': true, 'dt': true},
-      'li': {'li': true},
-      'option': {'option': true, 'optgroup': true},
-      'optgroup': {'optgroup': true},
-      'p': {'address': true, 'article': true, 'aside': true, 'blockquote': true, 'dir': true,
-            'div': true, 'dl': true, 'fieldset': true, 'footer': true, 'form': true,
-            'h1': true, 'h2': true, 'h3': true, 'h4': true, 'h5': true, 'h6': true,
-            'header': true, 'hgroup': true, 'hr': true, 'menu': true, 'nav': true, 'ol': true,
-            'p': true, 'pre': true, 'section': true, 'table': true, 'ul': true},
-      'rp': {'rp': true, 'rt': true},
-      'rt': {'rp': true, 'rt': true},
-      'tbody': {'tbody': true, 'tfoot': true},
-      'td': {'td': true, 'th': true},
-      'tfoot': {'tbody': true},
-      'th': {'td': true, 'th': true},
-      'thead': {'tbody': true, 'tfoot': true},
-      'tr': {'tr': true}
-    },
-    doNotIndent: {"pre": true},
-    allowUnquoted: true,
-    allowMissing: true,
-    caseFold: true
-  } : {
-    autoSelfClosers: {},
-    implicitlyClosed: {},
-    contextGrabbers: {},
-    doNotIndent: {},
-    allowUnquoted: false,
-    allowMissing: false,
-    caseFold: false
-  };
-  var alignCDATA = parserConfig.alignCDATA;
-
-  // Return variables for tokenizers
-  var type, setStyle;
-
-  function inText(stream, state) {
-    function chain(parser) {
-      state.tokenize = parser;
-      return parser(stream, state);
-    }
-
-    var ch = stream.next();
-    if (ch == "<") {
-      if (stream.eat("!")) {
-        if (stream.eat("[")) {
-          if (stream.match("CDATA[")) return chain(inBlock("atom", "]]>"));
-          else return null;
-        } else if (stream.match("--")) {
-          return chain(inBlock("comment", "-->"));
-        } else if (stream.match("DOCTYPE", true, true)) {
-          stream.eatWhile(/[\w\._\-]/);
-          return chain(doctype(1));
-        } else {
-          return null;
-        }
-      } else if (stream.eat("?")) {
-        stream.eatWhile(/[\w\._\-]/);
-        state.tokenize = inBlock("meta", "?>");
-        return "meta";
-      } else {
-        type = stream.eat("/") ? "closeTag" : "openTag";
-        state.tokenize = inTag;
-        return "tag bracket";
-      }
-    } else if (ch == "&") {
-      var ok;
-      if (stream.eat("#")) {
-        if (stream.eat("x")) {
-          ok = stream.eatWhile(/[a-fA-F\d]/) && stream.eat(";");
-        } else {
-          ok = stream.eatWhile(/[\d]/) && stream.eat(";");
-        }
-      } else {
-        ok = stream.eatWhile(/[\w\.\-:]/) && stream.eat(";");
-      }
-      return ok ? "atom" : "error";
-    } else {
-      stream.eatWhile(/[^&<]/);
-      return null;
-    }
-  }
-  inText.isInText = true;
-
-  function inTag(stream, state) {
-    var ch = stream.next();
-    if (ch == ">" || (ch == "/" && stream.eat(">"))) {
-      state.tokenize = inText;
-      type = ch == ">" ? "endTag" : "selfcloseTag";
-      return "tag bracket";
-    } else if (ch == "=") {
-      type = "equals";
-      return null;
-    } else if (ch == "<") {
-      state.tokenize = inText;
-      state.state = baseState;
-      state.tagName = state.tagStart = null;
-      var next = state.tokenize(stream, state);
-      return next ? next + " tag error" : "tag error";
-    } else if (/[\'\"]/.test(ch)) {
-      state.tokenize = inAttribute(ch);
-      state.stringStartCol = stream.column();
-      return state.tokenize(stream, state);
-    } else {
-      stream.match(/^[^\s\u00a0=<>\"\']*[^\s\u00a0=<>\"\'\/]/);
-      return "word";
-    }
-  }
-
-  function inAttribute(quote) {
-    var closure = function(stream, state) {
-      while (!stream.eol()) {
-        if (stream.next() == quote) {
-          state.tokenize = inTag;
-          break;
-        }
-      }
-      return "string";
-    };
-    closure.isInAttribute = true;
-    return closure;
-  }
-
-  function inBlock(style, terminator) {
-    return function(stream, state) {
-      while (!stream.eol()) {
-        if (stream.match(terminator)) {
-          state.tokenize = inText;
-          break;
-        }
-        stream.next();
-      }
-      return style;
-    };
-  }
-  function doctype(depth) {
-    return function(stream, state) {
-      var ch;
-      while ((ch = stream.next()) != null) {
-        if (ch == "<") {
-          state.tokenize = doctype(depth + 1);
-          return state.tokenize(stream, state);
-        } else if (ch == ">") {
-          if (depth == 1) {
-            state.tokenize = inText;
-            break;
-          } else {
-            state.tokenize = doctype(depth - 1);
-            return state.tokenize(stream, state);
-          }
-        }
-      }
-      return "meta";
-    };
-  }
-
-  function Context(state, tagName, startOfLine) {
-    this.prev = state.context;
-    this.tagName = tagName;
-    this.indent = state.indented;
-    this.startOfLine = startOfLine;
-    if (Kludges.doNotIndent.hasOwnProperty(tagName) || (state.context && state.context.noIndent))
-      this.noIndent = true;
-  }
-  function popContext(state) {
-    if (state.context) state.context = state.context.prev;
-  }
-  function maybePopContext(state, nextTagName) {
-    var parentTagName;
-    while (true) {
-      if (!state.context) {
-        return;
-      }
-      parentTagName = state.context.tagName;
-      if (!Kludges.contextGrabbers.hasOwnProperty(parentTagName) ||
-          !Kludges.contextGrabbers[parentTagName].hasOwnProperty(nextTagName)) {
-        return;
-      }
-      popContext(state);
-    }
-  }
-
-  function baseState(type, stream, state) {
-    if (type == "openTag") {
-      state.tagStart = stream.column();
-      return tagNameState;
-    } else if (type == "closeTag") {
-      return closeTagNameState;
-    } else {
-      return baseState;
-    }
-  }
-  function tagNameState(type, stream, state) {
-    if (type == "word") {
-      state.tagName = stream.current();
-      setStyle = "tag";
-      return attrState;
-    } else {
-      setStyle = "error";
-      return tagNameState;
-    }
-  }
-  function closeTagNameState(type, stream, state) {
-    if (type == "word") {
-      var tagName = stream.current();
-      if (state.context && state.context.tagName != tagName &&
-          Kludges.implicitlyClosed.hasOwnProperty(state.context.tagName))
-        popContext(state);
-      if (state.context && state.context.tagName == tagName) {
-        setStyle = "tag";
-        return closeState;
-      } else {
-        setStyle = "tag error";
-        return closeStateErr;
-      }
-    } else {
-      setStyle = "error";
-      return closeStateErr;
-    }
-  }
-
-  function closeState(type, _stream, state) {
-    if (type != "endTag") {
-      setStyle = "error";
-      return closeState;
-    }
-    popContext(state);
-    return baseState;
-  }
-  function closeStateErr(type, stream, state) {
-    setStyle = "error";
-    return closeState(type, stream, state);
-  }
-
-  function attrState(type, _stream, state) {
-    if (type == "word") {
-      setStyle = "attribute";
-      return attrEqState;
-    } else if (type == "endTag" || type == "selfcloseTag") {
-      var tagName = state.tagName, tagStart = state.tagStart;
-      state.tagName = state.tagStart = null;
-      if (type == "selfcloseTag" ||
-          Kludges.autoSelfClosers.hasOwnProperty(tagName)) {
-        maybePopContext(state, tagName);
-      } else {
-        maybePopContext(state, tagName);
-        state.context = new Context(state, tagName, tagStart == state.indented);
-      }
-      return baseState;
-    }
-    setStyle = "error";
-    return attrState;
-  }
-  function attrEqState(type, stream, state) {
-    if (type == "equals") return attrValueState;
-    if (!Kludges.allowMissing) setStyle = "error";
-    return attrState(type, stream, state);
-  }
-  function attrValueState(type, stream, state) {
-    if (type == "string") return attrContinuedState;
-    if (type == "word" && Kludges.allowUnquoted) {setStyle = "string"; return attrState;}
-    setStyle = "error";
-    return attrState(type, stream, state);
-  }
-  function attrContinuedState(type, stream, state) {
-    if (type == "string") return attrContinuedState;
-    return attrState(type, stream, state);
-  }
-
-  return {
-    startState: function() {
-      return {tokenize: inText,
-              state: baseState,
-              indented: 0,
-              tagName: null, tagStart: null,
-              context: null};
-    },
-
-    token: function(stream, state) {
-      if (!state.tagName && stream.sol())
-        state.indented = stream.indentation();
-
-      if (stream.eatSpace()) return null;
-      type = null;
-      var style = state.tokenize(stream, state);
-      if ((style || type) && style != "comment") {
-        setStyle = null;
-        state.state = state.state(type || style, stream, state);
-        if (setStyle)
-          style = setStyle == "error" ? style + " error" : setStyle;
-      }
-      return style;
-    },
-
-    indent: function(state, textAfter, fullLine) {
-      var context = state.context;
-      // Indent multi-line strings (e.g. css).
-      if (state.tokenize.isInAttribute) {
-        if (state.tagStart == state.indented)
-          return state.stringStartCol + 1;
-        else
-          return state.indented + indentUnit;
-      }
-      if (context && context.noIndent) return CodeMirror.Pass;
-      if (state.tokenize != inTag && state.tokenize != inText)
-        return fullLine ? fullLine.match(/^(\s*)/)[0].length : 0;
-      // Indent the starts of attribute names.
-      if (state.tagName) {
-        if (multilineTagIndentPastTag)
-          return state.tagStart + state.tagName.length + 2;
-        else
-          return state.tagStart + indentUnit * multilineTagIndentFactor;
-      }
-      if (alignCDATA && /<!\[CDATA\[/.test(textAfter)) return 0;
-      var tagAfter = textAfter && /^<(\/)?([\w_:\.-]*)/.exec(textAfter);
-      if (tagAfter && tagAfter[1]) { // Closing tag spotted
-        while (context) {
-          if (context.tagName == tagAfter[2]) {
-            context = context.prev;
-            break;
-          } else if (Kludges.implicitlyClosed.hasOwnProperty(context.tagName)) {
-            context = context.prev;
-          } else {
-            break;
-          }
-        }
-      } else if (tagAfter) { // Opening tag spotted
-        while (context) {
-          var grabbers = Kludges.contextGrabbers[context.tagName];
-          if (grabbers && grabbers.hasOwnProperty(tagAfter[2]))
-            context = context.prev;
-          else
-            break;
-        }
-      }
-      while (context && !context.startOfLine)
-        context = context.prev;
-      if (context) return context.indent + indentUnit;
-      else return 0;
-    },
-
-    electricInput: /<\/[\s\w:]+>$/,
-    blockCommentStart: "<!--",
-    blockCommentEnd: "-->",
-
-    configuration: parserConfig.htmlMode ? "html" : "xml",
-    helperType: parserConfig.htmlMode ? "html" : "xml"
-  };
-});
-
-CodeMirror.defineMIME("text/xml", "xml");
-CodeMirror.defineMIME("application/xml", "xml");
-if (!CodeMirror.mimeModes.hasOwnProperty("text/html"))
-  CodeMirror.defineMIME("text/html", {name: "xml", htmlMode: true});
-
-});
diff --git a/src/js/marked.js b/src/js/marked.js
deleted file mode 100644
index 03251f3..0000000
--- a/src/js/marked.js
+++ /dev/null
@@ -1,1285 +0,0 @@
-/**
- * marked - a markdown parser
- * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
- * https://github.com/chjj/marked
- */
-
-;(function() {
-
-/**
- * Block-Level Grammar
- */
-
-var block = {
-  newline: /^\n+/,
-  code: /^( {4}[^\n]+\n*)+/,
-  fences: noop,
-  hr: /^( *[-*_]){3,} *(?:\n+|$)/,
-  heading: /^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,
-  nptable: noop,
-  lheading: /^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,
-  blockquote: /^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,
-  list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
-  html: /^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,
-  def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,
-  table: noop,
-  paragraph: /^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,
-  text: /^[^\n]+/
-};
-
-block.bullet = /(?:[*+-]|\d+\.)/;
-block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;
-block.item = replace(block.item, 'gm')
-  (/bull/g, block.bullet)
-  ();
-
-block.list = replace(block.list)
-  (/bull/g, block.bullet)
-  ('hr', '\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))')
-  ('def', '\\n+(?=' + block.def.source + ')')
-  ();
-
-block.blockquote = replace(block.blockquote)
-  ('def', block.def)
-  ();
-
-block._tag = '(?!(?:'
-  + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code'
-  + '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo'
-  + '|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b';
-
-block.html = replace(block.html)
-  ('comment', /<!--[\s\S]*?-->/)
-  ('closed', /<(tag)[\s\S]+?<\/\1>/)
-  ('closing', /<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)
-  (/tag/g, block._tag)
-  ();
-
-block.paragraph = replace(block.paragraph)
-  ('hr', block.hr)
-  ('heading', block.heading)
-  ('lheading', block.lheading)
-  ('blockquote', block.blockquote)
-  ('tag', '<' + block._tag)
-  ('def', block.def)
-  ();
-
-/**
- * Normal Block Grammar
- */
-
-block.normal = merge({}, block);
-
-/**
- * GFM Block Grammar
- */
-
-block.gfm = merge({}, block.normal, {
-  fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,
-  paragraph: /^/,
-  heading: /^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/
-});
-
-block.gfm.paragraph = replace(block.paragraph)
-  ('(?!', '(?!'
-    + block.gfm.fences.source.replace('\\1', '\\2') + '|'
-    + block.list.source.replace('\\1', '\\3') + '|')
-  ();
-
-/**
- * GFM + Tables Block Grammar
- */
-
-block.tables = merge({}, block.gfm, {
-  nptable: /^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,
-  table: /^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/
-});
-
-/**
- * Block Lexer
- */
-
-function Lexer(options) {
-  this.tokens = [];
-  this.tokens.links = {};
-  this.options = options || marked.defaults;
-  this.rules = block.normal;
-
-  if (this.options.gfm) {
-    if (this.options.tables) {
-      this.rules = block.tables;
-    } else {
-      this.rules = block.gfm;
-    }
-  }
-}
-
-/**
- * Expose Block Rules
- */
-
-Lexer.rules = block;
-
-/**
- * Static Lex Method
- */
-
-Lexer.lex = function(src, options) {
-  var lexer = new Lexer(options);
-  return lexer.lex(src);
-};
-
-/**
- * Preprocessing
- */
-
-Lexer.prototype.lex = function(src) {
-  src = src
-    .replace(/\r\n|\r/g, '\n')
-    .replace(/\t/g, '    ')
-    .replace(/\u00a0/g, ' ')
-    .replace(/\u2424/g, '\n');
-
-  return this.token(src, true);
-};
-
-/**
- * Lexing
- */
-
-Lexer.prototype.token = function(src, top, bq) {
-  var src = src.replace(/^ +$/gm, '')
-    , next
-    , loose
-    , cap
-    , bull
-    , b
-    , item
-    , space
-    , i
-    , l;
-
-  while (src) {
-    // newline
-    if (cap = this.rules.newline.exec(src)) {
-      src = src.substring(cap[0].length);
-      if (cap[0].length > 1) {
-        this.tokens.push({
-          type: 'space'
-        });
-      }
-    }
-
-    // code
-    if (cap = this.rules.code.exec(src)) {
-      src = src.substring(cap[0].length);
-      cap = cap[0].replace(/^ {4}/gm, '');
-      this.tokens.push({
-        type: 'code',
-        text: !this.options.pedantic
-          ? cap.replace(/\n+$/, '')
-          : cap
-      });
-      continue;
-    }
-
-    // fences (gfm)
-    if (cap = this.rules.fences.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'code',
-        lang: cap[2],
-        text: cap[3] || ''
-      });
-      continue;
-    }
-
-    // heading
-    if (cap = this.rules.heading.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'heading',
-        depth: cap[1].length,
-        text: cap[2]
-      });
-      continue;
-    }
-
-    // table no leading pipe (gfm)
-    if (top && (cap = this.rules.nptable.exec(src))) {
-      src = src.substring(cap[0].length);
-
-      item = {
-        type: 'table',
-        header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
-        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-        cells: cap[3].replace(/\n$/, '').split('\n')
-      };
-
-      for (i = 0; i < item.align.length; i++) {
-        if (/^ *-+: *$/.test(item.align[i])) {
-          item.align[i] = 'right';
-        } else if (/^ *:-+: *$/.test(item.align[i])) {
-          item.align[i] = 'center';
-        } else if (/^ *:-+ *$/.test(item.align[i])) {
-          item.align[i] = 'left';
-        } else {
-          item.align[i] = null;
-        }
-      }
-
-      for (i = 0; i < item.cells.length; i++) {
-        item.cells[i] = item.cells[i].split(/ *\| */);
-      }
-
-      this.tokens.push(item);
-
-      continue;
-    }
-
-    // lheading
-    if (cap = this.rules.lheading.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'heading',
-        depth: cap[2] === '=' ? 1 : 2,
-        text: cap[1]
-      });
-      continue;
-    }
-
-    // hr
-    if (cap = this.rules.hr.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'hr'
-      });
-      continue;
-    }
-
-    // blockquote
-    if (cap = this.rules.blockquote.exec(src)) {
-      src = src.substring(cap[0].length);
-
-      this.tokens.push({
-        type: 'blockquote_start'
-      });
-
-      cap = cap[0].replace(/^ *> ?/gm, '');
-
-      // Pass `top` to keep the current
-      // "toplevel" state. This is exactly
-      // how markdown.pl works.
-      this.token(cap, top, true);
-
-      this.tokens.push({
-        type: 'blockquote_end'
-      });
-
-      continue;
-    }
-
-    // list
-    if (cap = this.rules.list.exec(src)) {
-      src = src.substring(cap[0].length);
-      bull = cap[2];
-
-      this.tokens.push({
-        type: 'list_start',
-        ordered: bull.length > 1
-      });
-
-      // Get each top-level item.
-      cap = cap[0].match(this.rules.item);
-
-      next = false;
-      l = cap.length;
-      i = 0;
-
-      for (; i < l; i++) {
-        item = cap[i];
-
-        // Remove the list item's bullet
-        // so it is seen as the next token.
-        space = item.length;
-        item = item.replace(/^ *([*+-]|\d+\.) +/, '');
-
-        // Outdent whatever the
-        // list item contains. Hacky.
-        if (~item.indexOf('\n ')) {
-          space -= item.length;
-          item = !this.options.pedantic
-            ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
-            : item.replace(/^ {1,4}/gm, '');
-        }
-
-        // Determine whether the next list item belongs here.
-        // Backpedal if it does not belong in this list.
-        if (this.options.smartLists && i !== l - 1) {
-          b = block.bullet.exec(cap[i + 1])[0];
-          if (bull !== b && !(bull.length > 1 && b.length > 1)) {
-            src = cap.slice(i + 1).join('\n') + src;
-            i = l - 1;
-          }
-        }
-
-        // Determine whether item is loose or not.
-        // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
-        // for discount behavior.
-        loose = next || /\n\n(?!\s*$)/.test(item);
-        if (i !== l - 1) {
-          next = item.charAt(item.length - 1) === '\n';
-          if (!loose) loose = next;
-        }
-
-        this.tokens.push({
-          type: loose
-            ? 'loose_item_start'
-            : 'list_item_start'
-        });
-
-        // Recurse.
-        this.token(item, false, bq);
-
-        this.tokens.push({
-          type: 'list_item_end'
-        });
-      }
-
-      this.tokens.push({
-        type: 'list_end'
-      });
-
-      continue;
-    }
-
-    // html
-    if (cap = this.rules.html.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: this.options.sanitize
-          ? 'paragraph'
-          : 'html',
-        pre: !this.options.sanitizer
-          && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
-        text: cap[0]
-      });
-      continue;
-    }
-
-    // def
-    if ((!bq && top) && (cap = this.rules.def.exec(src))) {
-      src = src.substring(cap[0].length);
-      this.tokens.links[cap[1].toLowerCase()] = {
-        href: cap[2],
-        title: cap[3]
-      };
-      continue;
-    }
-
-    // table (gfm)
-    if (top && (cap = this.rules.table.exec(src))) {
-      src = src.substring(cap[0].length);
-
-      item = {
-        type: 'table',
-        header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
-        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-        cells: cap[3].replace(/(?: *\| *)?\n$/, '').split('\n')
-      };
-
-      for (i = 0; i < item.align.length; i++) {
-        if (/^ *-+: *$/.test(item.align[i])) {
-          item.align[i] = 'right';
-        } else if (/^ *:-+: *$/.test(item.align[i])) {
-          item.align[i] = 'center';
-        } else if (/^ *:-+ *$/.test(item.align[i])) {
-          item.align[i] = 'left';
-        } else {
-          item.align[i] = null;
-        }
-      }
-
-      for (i = 0; i < item.cells.length; i++) {
-        item.cells[i] = item.cells[i]
-          .replace(/^ *\| *| *\| *$/g, '')
-          .split(/ *\| */);
-      }
-
-      this.tokens.push(item);
-
-      continue;
-    }
-
-    // top-level paragraph
-    if (top && (cap = this.rules.paragraph.exec(src))) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'paragraph',
-        text: cap[1].charAt(cap[1].length - 1) === '\n'
-          ? cap[1].slice(0, -1)
-          : cap[1]
-      });
-      continue;
-    }
-
-    // text
-    if (cap = this.rules.text.exec(src)) {
-      // Top-level should never reach here.
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'text',
-        text: cap[0]
-      });
-      continue;
-    }
-
-    if (src) {
-      throw new
-        Error('Infinite loop on byte: ' + src.charCodeAt(0));
-    }
-  }
-
-  return this.tokens;
-};
-
-/**
- * Inline-Level Grammar
- */
-
-var inline = {
-  escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
-  autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
-  url: noop,
-  tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
-  link: /^!?\[(inside)\]\(href\)/,
-  reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
-  nolink: /^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,
-  strong: /^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,
-  em: /^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,
-  code: /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,
-  br: /^ {2,}\n(?!\s*$)/,
-  del: noop,
-  text: /^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/
-};
-
-inline._inside = /(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;
-inline._href = /\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;
-
-inline.link = replace(inline.link)
-  ('inside', inline._inside)
-  ('href', inline._href)
-  ();
-
-inline.reflink = replace(inline.reflink)
-  ('inside', inline._inside)
-  ();
-
-/**
- * Normal Inline Grammar
- */
-
-inline.normal = merge({}, inline);
-
-/**
- * Pedantic Inline Grammar
- */
-
-inline.pedantic = merge({}, inline.normal, {
-  strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
-  em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/
-});
-
-/**
- * GFM Inline Grammar
- */
-
-inline.gfm = merge({}, inline.normal, {
-  escape: replace(inline.escape)('])', '~|])')(),
-  url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
-  del: /^~~(?=\S)([\s\S]*?\S)~~/,
-  text: replace(inline.text)
-    (']|', '~]|')
-    ('|', '|https?://|')
-    ()
-});
-
-/**
- * GFM + Line Breaks Inline Grammar
- */
-
-inline.breaks = merge({}, inline.gfm, {
-  br: replace(inline.br)('{2,}', '*')(),
-  text: replace(inline.gfm.text)('{2,}', '*')()
-});
-
-/**
- * Inline Lexer & Compiler
- */
-
-function InlineLexer(links, options) {
-  this.options = options || marked.defaults;
-  this.links = links;
-  this.rules = inline.normal;
-  this.renderer = this.options.renderer || new Renderer;
-  this.renderer.options = this.options;
-
-  if (!this.links) {
-    throw new
-      Error('Tokens array requires a `links` property.');
-  }
-
-  if (this.options.gfm) {
-    if (this.options.breaks) {
-      this.rules = inline.breaks;
-    } else {
-      this.rules = inline.gfm;
-    }
-  } else if (this.options.pedantic) {
-    this.rules = inline.pedantic;
-  }
-}
-
-/**
- * Expose Inline Rules
- */
-
-InlineLexer.rules = inline;
-
-/**
- * Static Lexing/Compiling Method
- */
-
-InlineLexer.output = function(src, links, options) {
-  var inline = new InlineLexer(links, options);
-  return inline.output(src);
-};
-
-/**
- * Lexing/Compiling
- */
-
-InlineLexer.prototype.output = function(src) {
-  var out = ''
-    , link
-    , text
-    , href
-    , cap;
-
-  while (src) {
-    // escape
-    if (cap = this.rules.escape.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += cap[1];
-      continue;
-    }
-
-    // autolink
-    if (cap = this.rules.autolink.exec(src)) {
-      src = src.substring(cap[0].length);
-      if (cap[2] === '@') {
-        text = cap[1].charAt(6) === ':'
-          ? this.mangle(cap[1].substring(7))
-          : this.mangle(cap[1]);
-        href = this.mangle('mailto:') + text;
-      } else {
-        text = escape(cap[1]);
-        href = text;
-      }
-      out += this.renderer.link(href, null, text);
-      continue;
-    }
-
-    // url (gfm)
-    if (!this.inLink && (cap = this.rules.url.exec(src))) {
-      src = src.substring(cap[0].length);
-      text = escape(cap[1]);
-      href = text;
-      out += this.renderer.link(href, null, text);
-      continue;
-    }
-
-    // tag
-    if (cap = this.rules.tag.exec(src)) {
-      if (!this.inLink && /^<a /i.test(cap[0])) {
-        this.inLink = true;
-      } else if (this.inLink && /^<\/a>/i.test(cap[0])) {
-        this.inLink = false;
-      }
-      src = src.substring(cap[0].length);
-      out += this.options.sanitize
-        ? this.options.sanitizer
-          ? this.options.sanitizer(cap[0])
-          : escape(cap[0])
-        : cap[0]
-      continue;
-    }
-
-    // link
-    if (cap = this.rules.link.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.inLink = true;
-      out += this.outputLink(cap, {
-        href: cap[2],
-        title: cap[3]
-      });
-      this.inLink = false;
-      continue;
-    }
-
-    // reflink, nolink
-    if ((cap = this.rules.reflink.exec(src))
-        || (cap = this.rules.nolink.exec(src))) {
-      src = src.substring(cap[0].length);
-      link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
-      link = this.links[link.toLowerCase()];
-      if (!link || !link.href) {
-        out += cap[0].charAt(0);
-        src = cap[0].substring(1) + src;
-        continue;
-      }
-      this.inLink = true;
-      out += this.outputLink(cap, link);
-      this.inLink = false;
-      continue;
-    }
-
-    // strong
-    if (cap = this.rules.strong.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.strong(this.output(cap[2] || cap[1]));
-      continue;
-    }
-
-    // em
-    if (cap = this.rules.em.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.em(this.output(cap[2] || cap[1]));
-      continue;
-    }
-
-    // code
-    if (cap = this.rules.code.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.codespan(escape(cap[2], true));
-      continue;
-    }
-
-    // br
-    if (cap = this.rules.br.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.br();
-      continue;
-    }
-
-    // del (gfm)
-    if (cap = this.rules.del.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.del(this.output(cap[1]));
-      continue;
-    }
-
-    // text
-    if (cap = this.rules.text.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.text(escape(this.smartypants(cap[0])));
-      continue;
-    }
-
-    if (src) {
-      throw new
-        Error('Infinite loop on byte: ' + src.charCodeAt(0));
-    }
-  }
-
-  return out;
-};
-
-/**
- * Compile Link
- */
-
-InlineLexer.prototype.outputLink = function(cap, link) {
-  var href = escape(link.href)
-    , title = link.title ? escape(link.title) : null;
-
-  return cap[0].charAt(0) !== '!'
-    ? this.renderer.link(href, title, this.output(cap[1]))
-    : this.renderer.image(href, title, escape(cap[1]));
-};
-
-/**
- * Smartypants Transformations
- */
-
-InlineLexer.prototype.smartypants = function(text) {
-  if (!this.options.smartypants) return text;
-  return text
-    // em-dashes
-    .replace(/---/g, '\u2014')
-    // en-dashes
-    .replace(/--/g, '\u2013')
-    // opening singles
-    .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
-    // closing singles & apostrophes
-    .replace(/'/g, '\u2019')
-    // opening doubles
-    .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
-    // closing doubles
-    .replace(/"/g, '\u201d')
-    // ellipses
-    .replace(/\.{3}/g, '\u2026');
-};
-
-/**
- * Mangle Links
- */
-
-InlineLexer.prototype.mangle = function(text) {
-  if (!this.options.mangle) return text;
-  var out = ''
-    , l = text.length
-    , i = 0
-    , ch;
-
-  for (; i < l; i++) {
-    ch = text.charCodeAt(i);
-    if (Math.random() > 0.5) {
-      ch = 'x' + ch.toString(16);
-    }
-    out += '&#' + ch + ';';
-  }
-
-  return out;
-};
-
-/**
- * Renderer
- */
-
-function Renderer(options) {
-  this.options = options || {};
-}
-
-Renderer.prototype.code = function(code, lang, escaped) {
-  if (this.options.highlight) {
-    var out = this.options.highlight(code, lang);
-    if (out != null && out !== code) {
-      escaped = true;
-      code = out;
-    }
-  }
-
-  if (!lang) {
-    return '<pre><code>'
-      + (escaped ? code : escape(code, true))
-      + '\n</code></pre>';
-  }
-
-  return '<pre><code class="'
-    + this.options.langPrefix
-    + escape(lang, true)
-    + '">'
-    + (escaped ? code : escape(code, true))
-    + '\n</code></pre>\n';
-};
-
-Renderer.prototype.blockquote = function(quote) {
-  return '<blockquote>\n' + quote + '</blockquote>\n';
-};
-
-Renderer.prototype.html = function(html) {
-  return html;
-};
-
-Renderer.prototype.heading = function(text, level, raw) {
-  return '<h'
-    + level
-    + ' id="'
-    + this.options.headerPrefix
-    + raw.toLowerCase().replace(/[^\w]+/g, '-')
-    + '">'
-    + text
-    + '</h'
-    + level
-    + '>\n';
-};
-
-Renderer.prototype.hr = function() {
-  return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
-};
-
-Renderer.prototype.list = function(body, ordered) {
-  var type = ordered ? 'ol' : 'ul';
-  return '<' + type + '>\n' + body + '</' + type + '>\n';
-};
-
-Renderer.prototype.listitem = function(text) {
-  return '<li>' + text + '</li>\n';
-};
-
-Renderer.prototype.paragraph = function(text) {
-  return '<p>' + text + '</p>\n';
-};
-
-Renderer.prototype.table = function(header, body) {
-  return '<table>\n'
-    + '<thead>\n'
-    + header
-    + '</thead>\n'
-    + '<tbody>\n'
-    + body
-    + '</tbody>\n'
-    + '</table>\n';
-};
-
-Renderer.prototype.tablerow = function(content) {
-  return '<tr>\n' + content + '</tr>\n';
-};
-
-Renderer.prototype.tablecell = function(content, flags) {
-  var type = flags.header ? 'th' : 'td';
-  var tag = flags.align
-    ? '<' + type + ' style="text-align:' + flags.align + '">'
-    : '<' + type + '>';
-  return tag + content + '</' + type + '>\n';
-};
-
-// span level renderer
-Renderer.prototype.strong = function(text) {
-  return '<strong>' + text + '</strong>';
-};
-
-Renderer.prototype.em = function(text) {
-  return '<em>' + text + '</em>';
-};
-
-Renderer.prototype.codespan = function(text) {
-  return '<code>' + text + '</code>';
-};
-
-Renderer.prototype.br = function() {
-  return this.options.xhtml ? '<br/>' : '<br>';
-};
-
-Renderer.prototype.del = function(text) {
-  return '<del>' + text + '</del>';
-};
-
-Renderer.prototype.link = function(href, title, text) {
-  if (this.options.sanitize) {
-    try {
-      var prot = decodeURIComponent(unescape(href))
-        .replace(/[^\w:]/g, '')
-        .toLowerCase();
-    } catch (e) {
-      return '';
-    }
-    if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0) {
-      return '';
-    }
-  }
-  var out = '<a href="' + href + '"';
-  if (title) {
-    out += ' title="' + title + '"';
-  }
-  out += '>' + text + '</a>';
-  return out;
-};
-
-Renderer.prototype.image = function(href, title, text) {
-  var out = '<img src="' + href + '" alt="' + text + '"';
-  if (title) {
-    out += ' title="' + title + '"';
-  }
-  out += this.options.xhtml ? '/>' : '>';
-  return out;
-};
-
-Renderer.prototype.text = function(text) {
-  return text;
-};
-
-/**
- * Parsing & Compiling
- */
-
-function Parser(options) {
-  this.tokens = [];
-  this.token = null;
-  this.options = options || marked.defaults;
-  this.options.renderer = this.options.renderer || new Renderer;
-  this.renderer = this.options.renderer;
-  this.renderer.options = this.options;
-}
-
-/**
- * Static Parse Method
- */
-
-Parser.parse = function(src, options, renderer) {
-  var parser = new Parser(options, renderer);
-  return parser.parse(src);
-};
-
-/**
- * Parse Loop
- */
-
-Parser.prototype.parse = function(src) {
-  this.inline = new InlineLexer(src.links, this.options, this.renderer);
-  this.tokens = src.reverse();
-
-  var out = '';
-  while (this.next()) {
-    out += this.tok();
-  }
-
-  return out;
-};
-
-/**
- * Next Token
- */
-
-Parser.prototype.next = function() {
-  return this.token = this.tokens.pop();
-};
-
-/**
- * Preview Next Token
- */
-
-Parser.prototype.peek = function() {
-  return this.tokens[this.tokens.length - 1] || 0;
-};
-
-/**
- * Parse Text Tokens
- */
-
-Parser.prototype.parseText = function() {
-  var body = this.token.text;
-
-  while (this.peek().type === 'text') {
-    body += '\n' + this.next().text;
-  }
-
-  return this.inline.output(body);
-};
-
-/**
- * Parse Current Token
- */
-
-Parser.prototype.tok = function() {
-  switch (this.token.type) {
-    case 'space': {
-      return '';
-    }
-    case 'hr': {
-      return this.renderer.hr();
-    }
-    case 'heading': {
-      return this.renderer.heading(
-        this.inline.output(this.token.text),
-        this.token.depth,
-        this.token.text);
-    }
-    case 'code': {
-      return this.renderer.code(this.token.text,
-        this.token.lang,
-        this.token.escaped);
-    }
-    case 'table': {
-      var header = ''
-        , body = ''
-        , i
-        , row
-        , cell
-        , flags
-        , j;
-
-      // header
-      cell = '';
-      for (i = 0; i < this.token.header.length; i++) {
-        flags = { header: true, align: this.token.align[i] };
-        cell += this.renderer.tablecell(
-          this.inline.output(this.token.header[i]),
-          { header: true, align: this.token.align[i] }
-        );
-      }
-      header += this.renderer.tablerow(cell);
-
-      for (i = 0; i < this.token.cells.length; i++) {
-        row = this.token.cells[i];
-
-        cell = '';
-        for (j = 0; j < row.length; j++) {
-          cell += this.renderer.tablecell(
-            this.inline.output(row[j]),
-            { header: false, align: this.token.align[j] }
-          );
-        }
-
-        body += this.renderer.tablerow(cell);
-      }
-      return this.renderer.table(header, body);
-    }
-    case 'blockquote_start': {
-      var body = '';
-
-      while (this.next().type !== 'blockquote_end') {
-        body += this.tok();
-      }
-
-      return this.renderer.blockquote(body);
-    }
-    case 'list_start': {
-      var body = ''
-        , ordered = this.token.ordered;
-
-      while (this.next().type !== 'list_end') {
-        body += this.tok();
-      }
-
-      return this.renderer.list(body, ordered);
-    }
-    case 'list_item_start': {
-      var body = '';
-
-      while (this.next().type !== 'list_item_end') {
-        body += this.token.type === 'text'
-          ? this.parseText()
-          : this.tok();
-      }
-
-      return this.renderer.listitem(body);
-    }
-    case 'loose_item_start': {
-      var body = '';
-
-      while (this.next().type !== 'list_item_end') {
-        body += this.tok();
-      }
-
-      return this.renderer.listitem(body);
-    }
-    case 'html': {
-      var html = !this.token.pre && !this.options.pedantic
-        ? this.inline.output(this.token.text)
-        : this.token.text;
-      return this.renderer.html(html);
-    }
-    case 'paragraph': {
-      return this.renderer.paragraph(this.inline.output(this.token.text));
-    }
-    case 'text': {
-      return this.renderer.paragraph(this.parseText());
-    }
-  }
-};
-
-/**
- * Helpers
- */
-
-function escape(html, encode) {
-  return html
-    .replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&amp;')
-    .replace(/</g, '&lt;')
-    .replace(/>/g, '&gt;')
-    .replace(/"/g, '&quot;')
-    .replace(/'/g, '&#39;');
-}
-
-function unescape(html) {
-  return html.replace(/&([#\w]+);/g, function(_, n) {
-    n = n.toLowerCase();
-    if (n === 'colon') return ':';
-    if (n.charAt(0) === '#') {
-      return n.charAt(1) === 'x'
-        ? String.fromCharCode(parseInt(n.substring(2), 16))
-        : String.fromCharCode(+n.substring(1));
-    }
-    return '';
-  });
-}
-
-function replace(regex, opt) {
-  regex = regex.source;
-  opt = opt || '';
-  return function self(name, val) {
-    if (!name) return new RegExp(regex, opt);
-    val = val.source || val;
-    val = val.replace(/(^|[^\[])\^/g, '$1');
-    regex = regex.replace(name, val);
-    return self;
-  };
-}
-
-function noop() {}
-noop.exec = noop;
-
-function merge(obj) {
-  var i = 1
-    , target
-    , key;
-
-  for (; i < arguments.length; i++) {
-    target = arguments[i];
-    for (key in target) {
-      if (Object.prototype.hasOwnProperty.call(target, key)) {
-        obj[key] = target[key];
-      }
-    }
-  }
-
-  return obj;
-}
-
-
-/**
- * Marked
- */
-
-function marked(src, opt, callback) {
-  if (callback || typeof opt === 'function') {
-    if (!callback) {
-      callback = opt;
-      opt = null;
-    }
-
-    opt = merge({}, marked.defaults, opt || {});
-
-    var highlight = opt.highlight
-      , tokens
-      , pending
-      , i = 0;
-
-    try {
-      tokens = Lexer.lex(src, opt)
-    } catch (e) {
-      return callback(e);
-    }
-
-    pending = tokens.length;
-
-    var done = function(err) {
-      if (err) {
-        opt.highlight = highlight;
-        return callback(err);
-      }
-
-      var out;
-
-      try {
-        out = Parser.parse(tokens, opt);
-      } catch (e) {
-        err = e;
-      }
-
-      opt.highlight = highlight;
-
-      return err
-        ? callback(err)
-        : callback(null, out);
-    };
-
-    if (!highlight || highlight.length < 3) {
-      return done();
-    }
-
-    delete opt.highlight;
-
-    if (!pending) return done();
-
-    for (; i < tokens.length; i++) {
-      (function(token) {
-        if (token.type !== 'code') {
-          return --pending || done();
-        }
-        return highlight(token.text, token.lang, function(err, code) {
-          if (err) return done(err);
-          if (code == null || code === token.text) {
-            return --pending || done();
-          }
-          token.text = code;
-          token.escaped = true;
-          --pending || done();
-        });
-      })(tokens[i]);
-    }
-
-    return;
-  }
-  try {
-    if (opt) opt = merge({}, marked.defaults, opt);
-    return Parser.parse(Lexer.lex(src, opt), opt);
-  } catch (e) {
-    e.message += '\nPlease report this to https://github.com/chjj/marked.';
-    if ((opt || marked.defaults).silent) {
-      return '<p>An error occured:</p><pre>'
-        + escape(e.message + '', true)
-        + '</pre>';
-    }
-    throw e;
-  }
-}
-
-/**
- * Options
- */
-
-marked.options =
-marked.setOptions = function(opt) {
-  merge(marked.defaults, opt);
-  return marked;
-};
-
-marked.defaults = {
-  gfm: true,
-  tables: true,
-  breaks: false,
-  pedantic: false,
-  sanitize: false,
-  sanitizer: null,
-  mangle: true,
-  smartLists: false,
-  silent: false,
-  highlight: null,
-  langPrefix: 'lang-',
-  smartypants: false,
-  headerPrefix: '',
-  renderer: new Renderer,
-  xhtml: false
-};
-
-/**
- * Expose
- */
-
-marked.Parser = Parser;
-marked.parser = Parser.parse;
-
-marked.Renderer = Renderer;
-
-marked.Lexer = Lexer;
-marked.lexer = Lexer.lex;
-
-marked.InlineLexer = InlineLexer;
-marked.inlineLexer = InlineLexer.output;
-
-marked.parse = marked;
-
-if (typeof module !== 'undefined' && typeof exports === 'object') {
-  module.exports = marked;
-} else if (typeof define === 'function' && define.amd) {
-  define(function() { return marked; });
-} else {
-  this.marked = marked;
-}
-
-}).call(function() {
-  return this || (typeof window !== 'undefined' ? window : global);
-}());
diff --git a/src/js/simplemde.js b/src/js/simplemde.js
index 48c55e7..5cbbe41 100644
--- a/src/js/simplemde.js
+++ b/src/js/simplemde.js
@@ -1,17 +1,30 @@
+/*global require,module*/
+"use strict";
+var CodeMirror = require("codemirror");
+require("codemirror/addon/edit/continuelist.js");
+require("codemirror/addon/display/fullscreen.js");
+require("codemirror/mode/gfm/gfm.js");
+require("codemirror/mode/markdown/markdown.js");
+require("codemirror/addon/mode/overlay.js");
+require("codemirror/mode/xml/xml.js");
+require("marked");
+require("codemirror-spell-checker/src/js/spell-checker.js");
+require("codemirror-spell-checker/src/js/typo.js");
+
 var isMac = /Mac/.test(navigator.platform);
 
 var shortcuts = {
-	'Cmd-B': toggleBold,
-	'Cmd-I': toggleItalic,
-	'Cmd-K': drawLink,
-	'Cmd-H': toggleHeadingSmaller,
-	'Shift-Cmd-H': toggleHeadingBigger,
-	'Cmd-Alt-I': drawImage,
+	"Cmd-B": toggleBold,
+	"Cmd-I": toggleItalic,
+	"Cmd-K": drawLink,
+	"Cmd-H": toggleHeadingSmaller,
+	"Shift-Cmd-H": toggleHeadingBigger,
+	"Cmd-Alt-I": drawImage,
 	"Cmd-'": toggleBlockquote,
-	'Cmd-Alt-L': toggleOrderedList,
-	'Cmd-L': toggleUnorderedList,
-	'Cmd-Alt-C': toggleCodeBlock,
-	'Cmd-P': togglePreview,
+	"Cmd-Alt-L": toggleOrderedList,
+	"Cmd-L": toggleUnorderedList,
+	"Cmd-Alt-C": toggleCodeBlock,
+	"Cmd-P": togglePreview
 };
 
 
@@ -20,9 +33,9 @@ var shortcuts = {
  */
 function fixShortcut(name) {
 	if(isMac) {
-		name = name.replace('Ctrl', 'Cmd');
+		name = name.replace("Ctrl", "Cmd");
 	} else {
-		name = name.replace('Cmd', 'Ctrl');
+		name = name.replace("Cmd", "Ctrl");
 	}
 	return name;
 }
@@ -33,15 +46,15 @@ function fixShortcut(name) {
  */
 function createIcon(options, enableTooltips) {
 	options = options || {};
-	var el = document.createElement('a');
+	var el = document.createElement("a");
 	enableTooltips = (enableTooltips == undefined) ? true : enableTooltips;
 
 	if(options.title && enableTooltips) {
 		el.title = options.title;
 
 		if(isMac) {
-			el.title = el.title.replace('Ctrl', '⌘');
-			el.title = el.title.replace('Alt', '⌥');
+			el.title = el.title.replace("Ctrl", "⌘");
+			el.title = el.title.replace("Alt", "⌥");
 		}
 	}
 
@@ -50,9 +63,9 @@ function createIcon(options, enableTooltips) {
 }
 
 function createSep() {
-	el = document.createElement('i');
-	el.className = 'separator';
-	el.innerHTML = '|';
+	var el = document.createElement("i");
+	el.className = "separator";
+	el.innerHTML = "|";
 	return el;
 }
 
@@ -61,34 +74,34 @@ function createSep() {
  * The state of CodeMirror at the given position.
  */
 function getState(cm, pos) {
-	pos = pos || cm.getCursor('start');
+	pos = pos || cm.getCursor("start");
 	var stat = cm.getTokenAt(pos);
 	if(!stat.type) return {};
 
-	var types = stat.type.split(' ');
+	var types = stat.type.split(" ");
 
 	var ret = {},
 		data, text;
 	for(var i = 0; i < types.length; i++) {
 		data = types[i];
-		if(data === 'strong') {
+		if(data === "strong") {
 			ret.bold = true;
-		} else if(data === 'variable-2') {
+		} else if(data === "variable-2") {
 			text = cm.getLine(pos.line);
 			if(/^\s*\d+\.\s/.test(text)) {
-				ret['ordered-list'] = true;
+				ret["ordered-list"] = true;
 			} else {
-				ret['unordered-list'] = true;
+				ret["unordered-list"] = true;
 			}
-		} else if(data === 'atom') {
+		} else if(data === "atom") {
 			ret.quote = true;
-		} else if(data === 'em') {
+		} else if(data === "em") {
 			ret.italic = true;
-		} else if(data === 'quote') {
+		} else if(data === "quote") {
 			ret.quote = true;
-		} else if(data === 'strikethrough') {
+		} else if(data === "strikethrough") {
 			ret.strikethrough = true;
-		} else if(data === 'comment') {
+		} else if(data === "comment") {
 			ret.code = true;
 		}
 	}
@@ -133,7 +146,7 @@ function toggleFullScreen(editor) {
 	if(!/active/.test(toolbarButton.className)) {
 		toolbarButton.className += " active";
 	} else {
-		toolbarButton.className = toolbarButton.className.replace(/\s*active\s*/g, '');
+		toolbarButton.className = toolbarButton.className.replace(/\s*active\s*/g, "");
 	}
 
 
@@ -148,7 +161,7 @@ function toggleFullScreen(editor) {
  * Action for toggling bold.
  */
 function toggleBold(editor) {
-	_toggleBlock(editor, 'bold', '**');
+	_toggleBlock(editor, "bold", "**");
 }
 
 
@@ -156,7 +169,7 @@ function toggleBold(editor) {
  * Action for toggling italic.
  */
 function toggleItalic(editor) {
-	_toggleBlock(editor, 'italic', '*');
+	_toggleBlock(editor, "italic", "*");
 }
 
 
@@ -164,14 +177,14 @@ function toggleItalic(editor) {
  * Action for toggling strikethrough.
  */
 function toggleStrikethrough(editor) {
-	_toggleBlock(editor, 'strikethrough', '~~');
+	_toggleBlock(editor, "strikethrough", "~~");
 }
 
 /**
  * Action for toggling code block.
  */
 function toggleCodeBlock(editor) {
-	_toggleBlock(editor, 'code', '```\r\n', '\r\n```');
+	_toggleBlock(editor, "code", "```\r\n", "\r\n```");
 }
 
 /**
@@ -179,7 +192,7 @@ function toggleCodeBlock(editor) {
  */
 function toggleBlockquote(editor) {
 	var cm = editor.codemirror;
-	_toggleLine(cm, 'quote');
+	_toggleLine(cm, "quote");
 }
 
 /**
@@ -187,7 +200,7 @@ function toggleBlockquote(editor) {
  */
 function toggleHeadingSmaller(editor) {
 	var cm = editor.codemirror;
-	_toggleHeading(cm, 'smaller');
+	_toggleHeading(cm, "smaller");
 }
 
 /**
@@ -195,7 +208,7 @@ function toggleHeadingSmaller(editor) {
  */
 function toggleHeadingBigger(editor) {
 	var cm = editor.codemirror;
-	_toggleHeading(cm, 'bigger');
+	_toggleHeading(cm, "bigger");
 }
 
 /**
@@ -228,7 +241,7 @@ function toggleHeading3(editor) {
  */
 function toggleUnorderedList(editor) {
 	var cm = editor.codemirror;
-	_toggleLine(cm, 'unordered-list');
+	_toggleLine(cm, "unordered-list");
 }
 
 
@@ -237,7 +250,7 @@ function toggleUnorderedList(editor) {
  */
 function toggleOrderedList(editor) {
 	var cm = editor.codemirror;
-	_toggleLine(cm, 'ordered-list');
+	_toggleLine(cm, "ordered-list");
 }
 
 
@@ -247,7 +260,7 @@ function toggleOrderedList(editor) {
 function drawLink(editor) {
 	var cm = editor.codemirror;
 	var stat = getState(cm);
-	_replaceSelection(cm, stat.link, '[', '](http://)');
+	_replaceSelection(cm, stat.link, "[", "](http://)");
 }
 
 
@@ -257,7 +270,7 @@ function drawLink(editor) {
 function drawImage(editor) {
 	var cm = editor.codemirror;
 	var stat = getState(cm);
-	_replaceSelection(cm, stat.image, '![](http://', ')');
+	_replaceSelection(cm, stat.image, "![](http://", ")");
 }
 
 
@@ -267,7 +280,7 @@ function drawImage(editor) {
 function drawHorizontalRule(editor) {
 	var cm = editor.codemirror;
 	var stat = getState(cm);
-	_replaceSelection(cm, stat.image, '', '\n\n-----\n\n');
+	_replaceSelection(cm, stat.image, "", "\n\n-----\n\n");
 }
 
 
@@ -297,16 +310,15 @@ function redo(editor) {
 function toggleSideBySide(editor) {
 	var cm = editor.codemirror;
 	var wrapper = cm.getWrapperElement();
-	var code = wrapper.firstChild;
 	var preview = wrapper.nextSibling;
 	var toolbarButton = editor.toolbarElements["side-by-side"];
 
 	if(/editor-preview-active-side/.test(preview.className)) {
 		preview.className = preview.className.replace(
-			/\s*editor-preview-active-side\s*/g, ''
+			/\s*editor-preview-active-side\s*/g, ""
 		);
-		toolbarButton.className = toolbarButton.className.replace(/\s*active\s*/g, '');
-		wrapper.className = wrapper.className.replace(/\s*CodeMirror-sided\s*/g, ' ');
+		toolbarButton.className = toolbarButton.className.replace(/\s*active\s*/g, "");
+		wrapper.className = wrapper.className.replace(/\s*CodeMirror-sided\s*/g, " ");
 	} else {
 		/* When the preview button is clicked for the first time,
 		 * give some time for the transition from editor.css to fire and the view to slide from right to left,
@@ -315,29 +327,29 @@ function toggleSideBySide(editor) {
 		setTimeout(function() {
 			if(!cm.getOption("fullScreen"))
 				toggleFullScreen(editor);
-			preview.className += ' editor-preview-active-side'
+			preview.className += " editor-preview-active-side";
 		}, 1);
-		toolbarButton.className += ' active';
-		wrapper.className += ' CodeMirror-sided';
+		toolbarButton.className += " active";
+		wrapper.className += " CodeMirror-sided";
 	}
 
 	// Hide normal preview if active
 	var previewNormal = wrapper.lastChild;
 	if(/editor-preview-active/.test(previewNormal.className)) {
 		previewNormal.className = previewNormal.className.replace(
-			/\s*editor-preview-active\s*/g, ''
+			/\s*editor-preview-active\s*/g, ""
 		);
 		var toolbar = editor.toolbarElements.preview;
 		var toolbar_div = wrapper.previousSibling;
-		toolbar.className = toolbar.className.replace(/\s*active\s*/g, '');
-		toolbar_div.className = toolbar_div.className.replace(/\s*disabled-for-preview*/g, '');
+		toolbar.className = toolbar.className.replace(/\s*active\s*/g, "");
+		toolbar_div.className = toolbar_div.className.replace(/\s*disabled-for-preview*/g, "");
 	}
 
 	// Start preview with the current text
 	preview.innerHTML = editor.options.previewRender(editor.value(), preview);
 
 	// Updates preview
-	cm.on('update', function() {
+	cm.on("update", function() {
 		preview.innerHTML = editor.options.previewRender(editor.value(), preview);
 	});
 }
@@ -353,26 +365,26 @@ function togglePreview(editor) {
 	var toolbar = editor.toolbarElements.preview;
 	var preview = wrapper.lastChild;
 	if(!preview || !/editor-preview/.test(preview.className)) {
-		preview = document.createElement('div');
-		preview.className = 'editor-preview';
+		preview = document.createElement("div");
+		preview.className = "editor-preview";
 		wrapper.appendChild(preview);
 	}
 	if(/editor-preview-active/.test(preview.className)) {
 		preview.className = preview.className.replace(
-			/\s*editor-preview-active\s*/g, ''
+			/\s*editor-preview-active\s*/g, ""
 		);
-		toolbar.className = toolbar.className.replace(/\s*active\s*/g, '');
-		toolbar_div.className = toolbar_div.className.replace(/\s*disabled-for-preview*/g, '');
+		toolbar.className = toolbar.className.replace(/\s*active\s*/g, "");
+		toolbar_div.className = toolbar_div.className.replace(/\s*disabled-for-preview*/g, "");
 	} else {
 		/* When the preview button is clicked for the first time,
 		 * give some time for the transition from editor.css to fire and the view to slide from right to left,
 		 * instead of just appearing.
 		 */
 		setTimeout(function() {
-			preview.className += ' editor-preview-active'
+			preview.className += " editor-preview-active";
 		}, 1);
-		toolbar.className += ' active';
-		toolbar_div.className += ' disabled-for-preview';
+		toolbar.className += " active";
+		toolbar_div.className += " disabled-for-preview";
 	}
 	preview.innerHTML = editor.options.previewRender(editor.value(), preview);
 
@@ -387,8 +399,8 @@ function _replaceSelection(cm, active, start, end) {
 		return;
 
 	var text;
-	var startPoint = cm.getCursor('start');
-	var endPoint = cm.getCursor('end');
+	var startPoint = cm.getCursor("start");
+	var endPoint = cm.getCursor("end");
 	if(active) {
 		text = cm.getLine(startPoint.line);
 		start = text.slice(0, startPoint.ch);
@@ -415,8 +427,8 @@ function _toggleHeading(cm, direction, size) {
 	if(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))
 		return;
 
-	var startPoint = cm.getCursor('start');
-	var endPoint = cm.getCursor('end');
+	var startPoint = cm.getCursor("start");
+	var endPoint = cm.getCursor("end");
 	for(var i = startPoint.line; i <= endPoint.line; i++) {
 		(function(i) {
 			var text = cm.getLine(i);
@@ -424,46 +436,46 @@ function _toggleHeading(cm, direction, size) {
 
 			if(direction !== undefined) {
 				if(currHeadingLevel <= 0) {
-					if(direction == 'bigger') {
-						text = '###### ' + text;
+					if(direction == "bigger") {
+						text = "###### " + text;
 					} else {
-						text = '# ' + text;
+						text = "# " + text;
 					}
-				} else if(currHeadingLevel == 6 && direction == 'smaller') {
+				} else if(currHeadingLevel == 6 && direction == "smaller") {
 					text = text.substr(7);
-				} else if(currHeadingLevel == 1 && direction == 'bigger') {
+				} else if(currHeadingLevel == 1 && direction == "bigger") {
 					text = text.substr(2);
 				} else {
-					if(direction == 'bigger') {
+					if(direction == "bigger") {
 						text = text.substr(1);
 					} else {
-						text = '#' + text;
+						text = "#" + text;
 					}
 				}
 			} else {
 				if(size == 1) {
 					if(currHeadingLevel <= 0) {
-						text = '# ' + text;
+						text = "# " + text;
 					} else if(currHeadingLevel == size) {
 						text = text.substr(currHeadingLevel + 1);
 					} else {
-						text = '# ' + text.substr(currHeadingLevel + 1);
+						text = "# " + text.substr(currHeadingLevel + 1);
 					}
 				} else if(size == 2) {
 					if(currHeadingLevel <= 0) {
-						text = '## ' + text;
+						text = "## " + text;
 					} else if(currHeadingLevel == size) {
 						text = text.substr(currHeadingLevel + 1);
 					} else {
-						text = '## ' + text.substr(currHeadingLevel + 1);
+						text = "## " + text.substr(currHeadingLevel + 1);
 					}
 				} else {
 					if(currHeadingLevel <= 0) {
-						text = '### ' + text;
+						text = "### " + text;
 					} else if(currHeadingLevel == size) {
 						text = text.substr(currHeadingLevel + 1);
 					} else {
-						text = '### ' + text.substr(currHeadingLevel + 1);
+						text = "### " + text.substr(currHeadingLevel + 1);
 					}
 				}
 			}
@@ -486,23 +498,23 @@ function _toggleLine(cm, name) {
 		return;
 
 	var stat = getState(cm);
-	var startPoint = cm.getCursor('start');
-	var endPoint = cm.getCursor('end');
+	var startPoint = cm.getCursor("start");
+	var endPoint = cm.getCursor("end");
 	var repl = {
-		'quote': /^(\s*)\>\s+/,
-		'unordered-list': /^(\s*)(\*|\-|\+)\s+/,
-		'ordered-list': /^(\s*)\d+\.\s+/
+		"quote": /^(\s*)\>\s+/,
+		"unordered-list": /^(\s*)(\*|\-|\+)\s+/,
+		"ordered-list": /^(\s*)\d+\.\s+/
 	};
 	var map = {
-		'quote': '> ',
-		'unordered-list': '* ',
-		'ordered-list': '1. '
+		"quote": "> ",
+		"unordered-list": "* ",
+		"ordered-list": "1. "
 	};
 	for(var i = startPoint.line; i <= endPoint.line; i++) {
 		(function(i) {
 			var text = cm.getLine(i);
 			if(stat[name]) {
-				text = text.replace(repl[name], '$1');
+				text = text.replace(repl[name], "$1");
 			} else {
 				text = map[name] + text;
 			}
@@ -522,7 +534,7 @@ function _toggleBlock(editor, type, start_chars, end_chars) {
 	if(/editor-preview-active/.test(editor.codemirror.getWrapperElement().lastChild.className))
 		return;
 
-	end_chars = (typeof end_chars === 'undefined') ? start_chars : end_chars;
+	end_chars = (typeof end_chars === "undefined") ? start_chars : end_chars;
 	var cm = editor.codemirror;
 	var stat = getState(cm);
 
@@ -530,8 +542,8 @@ function _toggleBlock(editor, type, start_chars, end_chars) {
 	var start = start_chars;
 	var end = end_chars;
 
-	var startPoint = cm.getCursor('start');
-	var endPoint = cm.getCursor('end');
+	var startPoint = cm.getCursor("start");
+	var endPoint = cm.getCursor("end");
 
 	if(stat[type]) {
 		text = cm.getLine(startPoint.line);
@@ -610,125 +622,124 @@ var toolbarBuiltInButtons = {
 		name: "bold",
 		action: toggleBold,
 		className: "fa fa-bold",
-		title: "Bold (Ctrl+B)",
+		title: "Bold (Ctrl+B)"
 	},
 	"italic": {
 		name: "italic",
 		action: toggleItalic,
 		className: "fa fa-italic",
-		title: "Italic (Ctrl+I)",
+		title: "Italic (Ctrl+I)"
 	},
 	"strikethrough": {
 		name: "strikethrough",
 		action: toggleStrikethrough,
 		className: "fa fa-strikethrough",
-		title: "Strikethrough",
+		title: "Strikethrough"
 	},
 	"heading": {
 		name: "heading",
 		action: toggleHeadingSmaller,
 		className: "fa fa-header",
-		title: "Heading (Ctrl+H)",
+		title: "Heading (Ctrl+H)"
 	},
 	"heading-smaller": {
 		name: "heading-smaller",
 		action: toggleHeadingSmaller,
 		className: "fa fa-header fa-header-x fa-header-smaller",
-		title: "Smaller Heading (Ctrl+H)",
+		title: "Smaller Heading (Ctrl+H)"
 	},
 	"heading-bigger": {
 		name: "heading-bigger",
 		action: toggleHeadingBigger,
 		className: "fa fa-header fa-header-x fa-header-bigger",
-		title: "Bigger Heading (Shift+Ctrl+H)",
+		title: "Bigger Heading (Shift+Ctrl+H)"
 	},
 	"heading-1": {
 		name: "heading-1",
 		action: toggleHeading1,
 		className: "fa fa-header fa-header-x fa-header-1",
-		title: "Big Heading",
+		title: "Big Heading"
 	},
 	"heading-2": {
 		name: "heading-2",
 		action: toggleHeading2,
 		className: "fa fa-header fa-header-x fa-header-2",
-		title: "Medium Heading",
+		title: "Medium Heading"
 	},
 	"heading-3": {
 		name: "heading-3",
 		action: toggleHeading3,
 		className: "fa fa-header fa-header-x fa-header-3",
-		title: "Small Heading",
+		title: "Small Heading"
 	},
 	"code": {
 		name: "code",
 		action: toggleCodeBlock,
 		className: "fa fa-code",
-		title: "Code (Ctrl+Alt+C)",
+		title: "Code (Ctrl+Alt+C)"
 	},
 	"quote": {
 		name: "quote",
 		action: toggleBlockquote,
 		className: "fa fa-quote-left",
-		title: "Quote (Ctrl+')",
+		title: "Quote (Ctrl+')"
 	},
 	"unordered-list": {
 		name: "unordered-list",
 		action: toggleUnorderedList,
 		className: "fa fa-list-ul",
-		title: "Generic List (Ctrl+L)",
+		title: "Generic List (Ctrl+L)"
 	},
 	"ordered-list": {
 		name: "ordered-list",
 		action: toggleOrderedList,
 		className: "fa fa-list-ol",
-		title: "Numbered List (Ctrl+Alt+L)",
+		title: "Numbered List (Ctrl+Alt+L)"
 	},
 	"link": {
 		name: "link",
 		action: drawLink,
 		className: "fa fa-link",
-		title: "Create Link (Ctrl+K)",
+		title: "Create Link (Ctrl+K)"
 	},
 	"image": {
 		name: "image",
 		action: drawImage,
 		className: "fa fa-picture-o",
-		title: "Insert Image (Ctrl+Alt+I)",
+		title: "Insert Image (Ctrl+Alt+I)"
 	},
 	"horizontal-rule": {
 		name: "horizontal-rule",
 		action: drawHorizontalRule,
 		className: "fa fa-minus",
-		title: "Insert Horizontal Line",
+		title: "Insert Horizontal Line"
 	},
 	"preview": {
 		name: "preview",
 		action: togglePreview,
 		className: "fa fa-eye no-disable",
-		title: "Toggle Preview (Ctrl+P)",
+		title: "Toggle Preview (Ctrl+P)"
 	},
 	"side-by-side": {
 		name: "side-by-side",
 		action: toggleSideBySide,
 		className: "fa fa-columns no-disable no-mobile",
-		title: "Toggle Side by Side (F9)",
+		title: "Toggle Side by Side (F9)"
 	},
 	"fullscreen": {
 		name: "fullscreen",
 		action: toggleFullScreen,
 		className: "fa fa-arrows-alt no-disable no-mobile",
-		title: "Toggle Fullscreen (F11)",
+		title: "Toggle Fullscreen (F11)"
 	},
 	"guide": {
 		name: "guide",
 		action: "http://nextstepwebs.github.io/simplemde-markdown-editor/markdown-guide",
 		className: "fa fa-question-circle",
-		title: "Markdown Guide",
+		title: "Markdown Guide"
 	}
 };
 
-var toolbar = ["bold", "italic", "heading", "|", "quote", "unordered-list", "ordered-list", "|", "link", "image", "|", "preview", "side-by-side", "fullscreen", "guide"];
 
 /**
  * Interface of SimpleMDE.
@@ -738,7 +749,7 @@ function SimpleMDE(options) {
 	options = options || {};
 
 
-	// Used later to refer to it's parent
+	// Used later to refer to it"s parent
 	options.parent = this;
 
 
@@ -783,17 +794,17 @@ function SimpleMDE(options) {
 	if(options.toolbar !== false)
 		options.toolbar = options.toolbar || SimpleMDE.toolbar;
 
-	if(!options.hasOwnProperty('status')) {
-		options.status = ['autosave', 'lines', 'words', 'cursor'];
+	if(!options.hasOwnProperty("status")) {
+		options.status = ["autosave", "lines", "words", "cursor"];
 	}
 
 
 	// Add default preview rendering function
 	if(!options.previewRender) {
 		options.previewRender = function(plainText) {
-			// Note: 'this' refers to the options object
+			// Note: "this" refers to the options object
 			return this.parent.markdown(plainText);
-		}
+		};
 	}
 
 
@@ -820,7 +831,7 @@ function SimpleMDE(options) {
 /**
  * Default toolbar elements.
  */
-SimpleMDE.toolbar = toolbar;
+SimpleMDE.toolbar = ["bold", "italic", "heading", "|", "quote", "unordered-list", "ordered-list", "|", "link", "image", "|", "preview", "side-by-side", "fullscreen", "guide"];
 
 /**
  * Default markdown render.
@@ -838,17 +849,17 @@ SimpleMDE.prototype.markdown = function(text) {
 
 		if(this.options && this.options.renderingConfig && this.options.renderingConfig.codeSyntaxHighlighting === true && window.hljs) {
 			markedOptions.highlight = function(code) {
-				return hljs.highlightAuto(code).value;
-			}
+				return window.hljs.highlightAuto(code).value;
+			};
 		}
 
 
 		// Set options
-		marked.setOptions(markedOptions);
+		window.marked.setOptions(markedOptions);
 
 
 		// Return
-		return marked(text);
+		return window.marked(text);
 	}
 };
 
@@ -857,7 +868,7 @@ SimpleMDE.prototype.markdown = function(text) {
  */
 SimpleMDE.prototype.render = function(el) {
 	if(!el) {
-		el = this.element || document.getElementsByTagName('textarea')[0];
+		el = this.element || document.getElementsByTagName("textarea")[0];
 	}
 
 	if(this._rendered && this._rendered === el) {
@@ -873,7 +884,7 @@ SimpleMDE.prototype.render = function(el) {
 
 	for(var key in shortcuts) {
 		(function(key) {
-			keyMaps[fixShortcut(key)] = function(cm) {
+			keyMaps[fixShortcut(key)] = function() {
 				shortcuts[key](self);
 			};
 		})(key);
@@ -882,10 +893,10 @@ SimpleMDE.prototype.render = function(el) {
 	keyMaps["Enter"] = "newlineAndIndentContinueMarkdownList";
 	keyMaps["Tab"] = "tabAndIndentMarkdownList";
 	keyMaps["Shift-Tab"] = "shiftTabAndUnindentMarkdownList";
-	keyMaps["F11"] = function(cm) {
+	keyMaps["F11"] = function() {
 		toggleFullScreen(self);
 	};
-	keyMaps["F9"] = function(cm) {
+	keyMaps["F9"] = function() {
 		toggleSideBySide(self);
 	};
 	keyMaps["Esc"] = function(cm) {
@@ -989,40 +1000,40 @@ SimpleMDE.prototype.createSideBySide = function() {
 	var preview = wrapper.nextSibling;
 
 	if(!preview || !/editor-preview-side/.test(preview.className)) {
-		preview = document.createElement('div');
-		preview.className = 'editor-preview-side';
+		preview = document.createElement("div");
+		preview.className = "editor-preview-side";
 		wrapper.parentNode.insertBefore(preview, wrapper.nextSibling);
 	}
 
 	// Syncs scroll  editor -> preview
 	var cScroll = false;
 	var pScroll = false;
-	cm.on('scroll', function(v) {
+	cm.on("scroll", function(v) {
 		if(cScroll) {
 			cScroll = false;
 			return;
-		};
+		}
 		pScroll = true;
-		height = v.getScrollInfo().height - v.getScrollInfo().clientHeight;
-		ratio = parseFloat(v.getScrollInfo().top) / height;
-		move = (preview.scrollHeight - preview.clientHeight) * ratio;
+		var height = v.getScrollInfo().height - v.getScrollInfo().clientHeight;
+		var ratio = parseFloat(v.getScrollInfo().top) / height;
+		var move = (preview.scrollHeight - preview.clientHeight) * ratio;
 		preview.scrollTop = move;
 	});
 
 	// Syncs scroll  preview -> editor
-	preview.onscroll = function(v) {
+	preview.onscroll = function() {
 		if(pScroll) {
 			pScroll = false;
 			return;
-		};
+		}
 		cScroll = true;
-		height = preview.scrollHeight - preview.clientHeight;
-		ratio = parseFloat(preview.scrollTop) / height;
-		move = (cm.getScrollInfo().height - cm.getScrollInfo().clientHeight) * ratio;
+		var height = preview.scrollHeight - preview.clientHeight;
+		var ratio = parseFloat(preview.scrollTop) / height;
+		var move = (cm.getScrollInfo().height - cm.getScrollInfo().clientHeight) * ratio;
 		cm.scrollTo(0, move);
 	};
 	return true;
-}
+};
 
 SimpleMDE.prototype.createToolbar = function(items) {
 	items = items || this.options.toolbar;
@@ -1030,23 +1041,22 @@ SimpleMDE.prototype.createToolbar = function(items) {
 	if(!items || items.length === 0) {
 		return;
 	}
-
-	for(var i = 0; i < items.length; i++) {
+	var i;
+	for(i = 0; i < items.length; i++) {
 		if(toolbarBuiltInButtons[items[i]] != undefined) {
 			items[i] = toolbarBuiltInButtons[items[i]];
 		}
 	}
 
-	var bar = document.createElement('div');
-	bar.className = 'editor-toolbar';
+	var bar = document.createElement("div");
+	bar.className = "editor-toolbar";
 
 	var self = this;
 
-	var el;
 	var toolbar_data = {};
 	self.toolbar = items;
 
-	for(var i = 0; i < items.length; i++) {
+	for(i = 0; i < items.length; i++) {
 		if(items[i].name == "guide" && self.options.toolbarGuideIcon === false)
 			continue;
 
@@ -1055,7 +1065,7 @@ SimpleMDE.prototype.createToolbar = function(items) {
 
 		(function(item) {
 			var el;
-			if(item === '|') {
+			if(item === "|") {
 				el = createSep();
 			} else {
 				el = createIcon(item, self.options.toolbarTips);
@@ -1063,13 +1073,13 @@ SimpleMDE.prototype.createToolbar = function(items) {
 
 			// bind events, special for info
 			if(item.action) {
-				if(typeof item.action === 'function') {
-					el.onclick = function(e) {
+				if(typeof item.action === "function") {
+					el.onclick = function() {
 						item.action(self);
 					};
-				} else if(typeof item.action === 'string') {
+				} else if(typeof item.action === "string") {
 					el.href = item.action;
-					el.target = '_blank';
+					el.target = "_blank";
 				}
 			}
 			toolbar_data[item.name || item] = el;
@@ -1080,16 +1090,16 @@ SimpleMDE.prototype.createToolbar = function(items) {
 	self.toolbarElements = toolbar_data;
 
 	var cm = this.codemirror;
-	cm.on('cursorActivity', function() {
+	cm.on("cursorActivity", function() {
 		var stat = getState(cm);
 
 		for(var key in toolbar_data) {
 			(function(key) {
 				var el = toolbar_data[key];
 				if(stat[key]) {
-					el.className += ' active';
+					el.className += " active";
 				} else if(key != "fullscreen" && key != "side-by-side") {
-					el.className = el.className.replace(/\s*active\s*/g, '');
+					el.className = el.className.replace(/\s*active\s*/g, "");
 				}
 			})(key);
 		}
@@ -1102,35 +1112,35 @@ SimpleMDE.prototype.createToolbar = function(items) {
 
 SimpleMDE.prototype.createStatusbar = function(status) {
 	status = status || this.options.status;
-	options = this.options;
+	var options = this.options;
 
 	if(!status || status.length === 0) return;
 
-	var bar = document.createElement('div');
-	bar.className = 'editor-statusbar';
+	var bar = document.createElement("div");
+	bar.className = "editor-statusbar";
 
 	var pos, cm = this.codemirror;
 	for(var i = 0; i < status.length; i++) {
 		(function(name) {
-			var el = document.createElement('span');
+			var el = document.createElement("span");
 			el.className = name;
-			if(name === 'words') {
-				el.innerHTML = '0';
-				cm.on('update', function() {
+			if(name === "words") {
+				el.innerHTML = "0";
+				cm.on("update", function() {
 					el.innerHTML = wordCount(cm.getValue());
 				});
-			} else if(name === 'lines') {
-				el.innerHTML = '0';
-				cm.on('update', function() {
+			} else if(name === "lines") {
+				el.innerHTML = "0";
+				cm.on("update", function() {
 					el.innerHTML = cm.lineCount();
 				});
-			} else if(name === 'cursor') {
-				el.innerHTML = '0:0';
-				cm.on('cursorActivity', function() {
+			} else if(name === "cursor") {
+				el.innerHTML = "0:0";
+				cm.on("cursorActivity", function() {
 					pos = cm.getCursor();
-					el.innerHTML = pos.line + ':' + pos.ch;
+					el.innerHTML = pos.line + ":" + pos.ch;
 				});
-			} else if(name === 'autosave') {
+			} else if(name === "autosave") {
 				if(options.autosave != undefined && options.autosave.enabled === true) {
 					el.setAttribute("id", "autosaved");
 				}
@@ -1244,3 +1254,4 @@ SimpleMDE.prototype.toggleSideBySide = function() {
 SimpleMDE.prototype.toggleFullScreen = function() {
 	toggleFullScreen(this);
 };
+module.exports = SimpleMDE;
diff --git a/src/js/spell-checker.js b/src/js/spell-checker.js
deleted file mode 100644
index e7c9dc6..0000000
--- a/src/js/spell-checker.js
+++ /dev/null
@@ -1,92 +0,0 @@
-// Initialize data globally to reduce memory consumption
-var num_loaded = 0;
-var aff_loading = false;
-var dic_loading = false;
-var aff_data = "";
-var dic_data = "";
-var typo;
-
-
-CodeMirror.defineMode("spell-checker", function(config, parserConfig) {
-	// Load AFF/DIC data
-	if(!aff_loading){
-		aff_loading = true;
-		var xhr_aff = new XMLHttpRequest();
-		xhr_aff.open("GET", "https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.aff", true);
-		xhr_aff.onload = function (e) {
-			if (xhr_aff.readyState === 4 && xhr_aff.status === 200) {
-				aff_data = xhr_aff.responseText;
-				num_loaded++;
-				
-				if(num_loaded == 2){
-					typo = new Typo("en_US", aff_data, dic_data, {
-						platform: 'any'
-					});
-				}
-			}
-		};
-		xhr_aff.send(null);
-	}
-	
-	if(!dic_loading){
-		dic_loading = true;
-		var xhr_dic = new XMLHttpRequest();
-		xhr_dic.open("GET", "https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.dic", true);
-		xhr_dic.onload = function (e) {
-			if (xhr_dic.readyState === 4 && xhr_dic.status === 200) {
-				dic_data = xhr_dic.responseText;
-				num_loaded++;
-				
-				if(num_loaded == 2){
-					typo = new Typo("en_US", aff_data, dic_data, {
-						platform: 'any'
-					});
-				}
-			}
-		};
-		xhr_dic.send(null);
-	}
-
-	
-	
-	// Define what separates a word
-	var rx_word = "!\"#$%&()*+,-./:;<=>?@[\\]^_`{|}~ ";
-	
-	
-	// Create the overlay and such
-	var overlay = {
-		token: function(stream, state) {
-			var ch = stream.peek();
-			var word = "";
-
-			if(rx_word.includes(ch)) {
-				stream.next();
-				return null;
-			}
-
-			while((ch = stream.peek()) != null && !rx_word.includes(ch)) {
-				word += ch;
-				stream.next();
-			}
-
-			if(typo && !typo.check(word))
-				return "spell-error"; // CSS class: cm-spell-error
-
-			return null;
-		}
-	};
-
-	var mode = CodeMirror.getMode(
-		config, config.backdrop || "text/plain"
-	);
-
-	return CodeMirror.overlayMode(mode, overlay, true);
-});
-
-
-// Because some browsers don't support this functionality yet
-if(!String.prototype.includes) {
-	String.prototype.includes = function() {'use strict';
-		return String.prototype.indexOf.apply(this, arguments) !== -1;
-	};
-}
\ No newline at end of file
diff --git a/src/js/typo.js b/src/js/typo.js
deleted file mode 100644
index afd27b1..0000000
--- a/src/js/typo.js
+++ /dev/null
@@ -1,766 +0,0 @@
-'use strict';
-
-/**
- * Typo is a JavaScript implementation of a spellchecker using hunspell-style
- * dictionaries.
- */
-
-/**
- * Typo constructor.
- *
- * @param {String} [dictionary] The locale code of the dictionary being used. e.g.,
- *                              "en_US". This is only used to auto-load dictionaries.
- * @param {String} [affData] The data from the dictionary's .aff file. If omitted
- *                           and the first argument is supplied, in "chrome" platform,
- *                           the .aff file will be loaded automatically from
- *                           lib/typo/dictionaries/[dictionary]/[dictionary].aff
- *                           In other platform, it will be loaded from
- *                           [setting.path]/dictionaries/[dictionary]/[dictionary].aff
- * @param {String} [wordsData] The data from the dictionary's .dic file. If omitted,
- *                           and the first argument is supplied, in "chrome" platform,
- *                           the .dic file will be loaded automatically from
- *                           lib/typo/dictionaries/[dictionary]/[dictionary].dic
- *                           In other platform, it will be loaded from
- *                           [setting.path]/dictionaries/[dictionary]/[dictionary].dic
- * @param {Object} [settings] Constructor settings. Available properties are:
- *                            {String} [platform]: "chrome" for Chrome Extension or other
- *                              value for the usual web.
- *                            {String} [dictionaryPath]: path to load dictionary from in non-chrome
- *                              environment.
- *                            {Object} [flags]: flag information.
- *
- *
- * @returns {Typo} A Typo object.
- */
-
-var Typo = function (dictionary, affData, wordsData, settings) {
-	settings = settings || {};
-	
-	/** Determines the method used for auto-loading .aff and .dic files. **/
-	this.platform = settings.platform || "chrome";
-	
-	this.dictionary = null;
-	
-	this.rules = {};
-	this.dictionaryTable = {};
-	
-	this.compoundRules = [];
-	this.compoundRuleCodes = {};
-	
-	this.replacementTable = [];
-	
-	this.flags = settings.flags || {};
-	
-	if (dictionary) {
-		this.dictionary = dictionary;
-		
-		if (this.platform == "chrome") {
-			if (!affData) affData = this._readFile(chrome.extension.getURL("lib/typo/dictionaries/" + dictionary + "/" + dictionary + ".aff"));
-			if (!wordsData) wordsData = this._readFile(chrome.extension.getURL("lib/typo/dictionaries/" + dictionary + "/" + dictionary + ".dic"));
-		} else {
-			var path = settings.dictionaryPath || '';
-			
-			if (!affData) affData = this._readFile(path + "/" + dictionary + "/" + dictionary + ".aff");
-			if (!wordsData) wordsData = this._readFile(path + "/" + dictionary + "/" + dictionary + ".dic");
-		}
-		
-		this.rules = this._parseAFF(affData);
-		
-		// Save the rule codes that are used in compound rules.
-		this.compoundRuleCodes = {};
-		
-		for (var i = 0, _len = this.compoundRules.length; i < _len; i++) {
-			var rule = this.compoundRules[i];
-			
-			for (var j = 0, _jlen = rule.length; j < _jlen; j++) {
-				this.compoundRuleCodes[rule[j]] = [];
-			}
-		}
-		
-		// If we add this ONLYINCOMPOUND flag to this.compoundRuleCodes, then _parseDIC
-		// will do the work of saving the list of words that are compound-only.
-		if ("ONLYINCOMPOUND" in this.flags) {
-			this.compoundRuleCodes[this.flags.ONLYINCOMPOUND] = [];
-		}
-		
-		this.dictionaryTable = this._parseDIC(wordsData);
-		
-		// Get rid of any codes from the compound rule codes that are never used
-		// (or that were special regex characters).  Not especially necessary...
-		for (var i in this.compoundRuleCodes) {
-			if (this.compoundRuleCodes[i].length == 0) {
-				delete this.compoundRuleCodes[i];
-			}
-		}
-		
-		// Build the full regular expressions for each compound rule.
-		// I have a feeling (but no confirmation yet) that this method of
-		// testing for compound words is probably slow.
-		for (var i = 0, _len = this.compoundRules.length; i < _len; i++) {
-			var ruleText = this.compoundRules[i];
-			
-			var expressionText = "";
-			
-			for (var j = 0, _jlen = ruleText.length; j < _jlen; j++) {
-				var character = ruleText[j];
-				
-				if (character in this.compoundRuleCodes) {
-					expressionText += "(" + this.compoundRuleCodes[character].join("|") + ")";
-				}
-				else {
-					expressionText += character;
-				}
-			}
-			
-			this.compoundRules[i] = new RegExp(expressionText, "i");
-		}
-	}
-	
-	return this;
-};
-
-Typo.prototype = {
-	/**
-	 * Loads a Typo instance from a hash of all of the Typo properties.
-	 *
-	 * @param object obj A hash of Typo properties, probably gotten from a JSON.parse(JSON.stringify(typo_instance)).
-	 */
-	
-	load : function (obj) {
-		for (var i in obj) {
-			this[i] = obj[i];
-		}
-		
-		return this;
-	},
-	
-	/**
-	 * Read the contents of a file.
-	 *
-	 * @param {String} path The path (relative) to the file.
-	 * @param {String} [charset="ISO8859-1"] The expected charset of the file
-	 * @returns string The file data.
-	 */
-	
-	_readFile : function (path, charset) {
-		if (!charset) charset = "ISO8859-1";
-		
-		var req = new XMLHttpRequest();
-		req.open("GET", path, false);
-		
-		if (req.overrideMimeType)
-			req.overrideMimeType("text/plain; charset=" + charset);
-		
-		req.send(null);
-		
-		return req.responseText;
-	},
-	
-	/**
-	 * Parse the rules out from a .aff file.
-	 *
-	 * @param {String} data The contents of the affix file.
-	 * @returns object The rules from the file.
-	 */
-	
-	_parseAFF : function (data) {
-		var rules = {};
-		
-		// Remove comment lines
-		data = this._removeAffixComments(data);
-		
-		var lines = data.split("\n");
-		
-		for (var i = 0, _len = lines.length; i < _len; i++) {
-			var line = lines[i];
-			
-			var definitionParts = line.split(/\s+/);
-			
-			var ruleType = definitionParts[0];
-			
-			if (ruleType == "PFX" || ruleType == "SFX") {
-				var ruleCode = definitionParts[1];
-				var combineable = definitionParts[2];
-				var numEntries = parseInt(definitionParts[3], 10);
-				
-				var entries = [];
-				
-				for (var j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {
-					var line = lines[j];
-					
-					var lineParts = line.split(/\s+/);
-					var charactersToRemove = lineParts[2];
-					
-					var additionParts = lineParts[3].split("/");
-					
-					var charactersToAdd = additionParts[0];
-					if (charactersToAdd === "0") charactersToAdd = "";
-					
-					var continuationClasses = this.parseRuleCodes(additionParts[1]);
-					
-					var regexToMatch = lineParts[4];
-					
-					var entry = {};
-					entry.add = charactersToAdd;
-					
-					if (continuationClasses.length > 0) entry.continuationClasses = continuationClasses;
-					
-					if (regexToMatch !== ".") {
-						if (ruleType === "SFX") {
-							entry.match = new RegExp(regexToMatch + "$");
-						}
-						else {
-							entry.match = new RegExp("^" + regexToMatch);
-						}
-					}
-					
-					if (charactersToRemove != "0") {
-						if (ruleType === "SFX") {
-							entry.remove = new RegExp(charactersToRemove  + "$");
-						}
-						else {
-							entry.remove = charactersToRemove;
-						}
-					}
-					
-					entries.push(entry);
-				}
-				
-				rules[ruleCode] = { "type" : ruleType, "combineable" : (combineable == "Y"), "entries" : entries };
-				
-				i += numEntries;
-			}
-			else if (ruleType === "COMPOUNDRULE") {
-				var numEntries = parseInt(definitionParts[1], 10);
-				
-				for (var j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {
-					var line = lines[j];
-					
-					var lineParts = line.split(/\s+/);
-					this.compoundRules.push(lineParts[1]);
-				}
-				
-				i += numEntries;
-			}
-			else if (ruleType === "REP") {
-				var lineParts = line.split(/\s+/);
-				
-				if (lineParts.length === 3) {
-					this.replacementTable.push([ lineParts[1], lineParts[2] ]);
-				}
-			}
-			else {
-				// ONLYINCOMPOUND
-				// COMPOUNDMIN
-				// FLAG
-				// KEEPCASE
-				// NEEDAFFIX
-				
-				this.flags[ruleType] = definitionParts[1];
-			}
-		}
-		
-		return rules;
-	},
-	
-	/**
-	 * Removes comment lines and then cleans up blank lines and trailing whitespace.
-	 *
-	 * @param {String} data The data from an affix file.
-	 * @return {String} The cleaned-up data.
-	 */
-	
-	_removeAffixComments : function (data) {
-		// Remove comments
-		data = data.replace(/#.*$/mg, "");
-		
-		// Trim each line
-		data = data.replace(/^\s\s*/m, '').replace(/\s\s*$/m, '');
-		
-		// Remove blank lines.
-		data = data.replace(/\n{2,}/g, "\n");
-		
-		// Trim the entire string
-		data = data.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
-		
-		return data;
-	},
-	
-	/**
-	 * Parses the words out from the .dic file.
-	 *
-	 * @param {String} data The data from the dictionary file.
-	 * @returns object The lookup table containing all of the words and
-	 *                 word forms from the dictionary.
-	 */
-	
-	_parseDIC : function (data) {
-		data = this._removeDicComments(data);
-		
-		var lines = data.split("\n");
-		var dictionaryTable = {};
-		
-		function addWord(word, rules) {
-			// Some dictionaries will list the same word multiple times with different rule sets.
-			if (!(word in dictionaryTable) || typeof dictionaryTable[word] != 'object') {
-				dictionaryTable[word] = [];
-			}
-			
-			dictionaryTable[word].push(rules);
-		}
-		
-		// The first line is the number of words in the dictionary.
-		for (var i = 1, _len = lines.length; i < _len; i++) {
-			var line = lines[i];
-			
-			var parts = line.split("/", 2);
-			
-			var word = parts[0];
-
-			// Now for each affix rule, generate that form of the word.
-			if (parts.length > 1) {
-				var ruleCodesArray = this.parseRuleCodes(parts[1]);
-				
-				// Save the ruleCodes for compound word situations.
-				if (!("NEEDAFFIX" in this.flags) || ruleCodesArray.indexOf(this.flags.NEEDAFFIX) == -1) {
-					addWord(word, ruleCodesArray);
-				}
-				
-				for (var j = 0, _jlen = ruleCodesArray.length; j < _jlen; j++) {
-					var code = ruleCodesArray[j];
-					
-					var rule = this.rules[code];
-					
-					if (rule) {
-						var newWords = this._applyRule(word, rule);
-						
-						for (var ii = 0, _iilen = newWords.length; ii < _iilen; ii++) {
-							var newWord = newWords[ii];
-							
-							addWord(newWord, []);
-							
-							if (rule.combineable) {
-								for (var k = j + 1; k < _jlen; k++) {
-									var combineCode = ruleCodesArray[k];
-									
-									var combineRule = this.rules[combineCode];
-									
-									if (combineRule) {
-										if (combineRule.combineable && (rule.type != combineRule.type)) {
-											var otherNewWords = this._applyRule(newWord, combineRule);
-											
-											for (var iii = 0, _iiilen = otherNewWords.length; iii < _iiilen; iii++) {
-												var otherNewWord = otherNewWords[iii];
-												addWord(otherNewWord, []);
-											}
-										}
-									}
-								}
-							}
-						}
-					}
-					
-					if (code in this.compoundRuleCodes) {
-						this.compoundRuleCodes[code].push(word);
-					}
-				}
-			}
-			else {
-				addWord(word.trim(), []);
-			}
-		}
-		
-		return dictionaryTable;
-	},
-	
-	
-	/**
-	 * Removes comment lines and then cleans up blank lines and trailing whitespace.
-	 *
-	 * @param {String} data The data from a .dic file.
-	 * @return {String} The cleaned-up data.
-	 */
-	
-	_removeDicComments : function (data) {
-		// I can't find any official documentation on it, but at least the de_DE
-		// dictionary uses tab-indented lines as comments.
-		
-		// Remove comments
-		data = data.replace(/^\t.*$/mg, "");
-		
-		return data;
-		
-		// Trim each line
-		data = data.replace(/^\s\s*/m, '').replace(/\s\s*$/m, '');
-		
-		// Remove blank lines.
-		data = data.replace(/\n{2,}/g, "\n");
-		
-		// Trim the entire string
-		data = data.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
-		
-		return data;
-	},
-	
-	parseRuleCodes : function (textCodes) {
-		if (!textCodes) {
-			return [];
-		}
-		else if (!("FLAG" in this.flags)) {
-			return textCodes.split("");
-		}
-		else if (this.flags.FLAG === "long") {
-			var flags = [];
-			
-			for (var i = 0, _len = textCodes.length; i < _len; i += 2) {
-				flags.push(textCodes.substr(i, 2));
-			}
-			
-			return flags;
-		}
-		else if (this.flags.FLAG === "num") {
-			return textCode.split(",");
-		}
-	},
-	
-	/**
-	 * Applies an affix rule to a word.
-	 *
-	 * @param {String} word The base word.
-	 * @param {Object} rule The affix rule.
-	 * @returns {String[]} The new words generated by the rule.
-	 */
-	
-	_applyRule : function (word, rule) {
-		var entries = rule.entries;
-		var newWords = [];
-		
-		for (var i = 0, _len = entries.length; i < _len; i++) {
-			var entry = entries[i];
-			
-			if (!entry.match || word.match(entry.match)) {
-				var newWord = word;
-				
-				if (entry.remove) {
-					newWord = newWord.replace(entry.remove, "");
-				}
-				
-				if (rule.type === "SFX") {
-					newWord = newWord + entry.add;
-				}
-				else {
-					newWord = entry.add + newWord;
-				}
-				
-				newWords.push(newWord);
-				
-				if ("continuationClasses" in entry) {
-					for (var j = 0, _jlen = entry.continuationClasses.length; j < _jlen; j++) {
-						var continuationRule = this.rules[entry.continuationClasses[j]];
-						
-						if (continuationRule) {
-							newWords = newWords.concat(this._applyRule(newWord, continuationRule));
-						}
-						/*
-						else {
-							// This shouldn't happen, but it does, at least in the de_DE dictionary.
-							// I think the author mistakenly supplied lower-case rule codes instead
-							// of upper-case.
-						}
-						*/
-					}
-				}
-			}
-		}
-		
-		return newWords;
-	},
-	
-	/**
-	 * Checks whether a word or a capitalization variant exists in the current dictionary.
-	 * The word is trimmed and several variations of capitalizations are checked.
-	 * If you want to check a word without any changes made to it, call checkExact()
-	 *
-	 * @see http://blog.stevenlevithan.com/archives/faster-trim-javascript re:trimming function
-	 *
-	 * @param {String} aWord The word to check.
-	 * @returns {Boolean}
-	 */
-	
-	check : function (aWord) {
-		// Remove leading and trailing whitespace
-		var trimmedWord = aWord.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
-		
-		if (this.checkExact(trimmedWord)) {
-			return true;
-		}
-		
-		// The exact word is not in the dictionary.
-		if (trimmedWord.toUpperCase() === trimmedWord) {
-			// The word was supplied in all uppercase.
-			// Check for a capitalized form of the word.
-			var capitalizedWord = trimmedWord[0] + trimmedWord.substring(1).toLowerCase();
-			
-			if (this.hasFlag(capitalizedWord, "KEEPCASE")) {
-				// Capitalization variants are not allowed for this word.
-				return false;
-			}
-			
-			if (this.checkExact(capitalizedWord)) {
-				return true;
-			}
-		}
-		
-		var lowercaseWord = trimmedWord.toLowerCase();
-		
-		if (lowercaseWord !== trimmedWord) {
-			if (this.hasFlag(lowercaseWord, "KEEPCASE")) {
-				// Capitalization variants are not allowed for this word.
-				return false;
-			}
-			
-			// Check for a lowercase form
-			if (this.checkExact(lowercaseWord)) {
-				return true;
-			}
-		}
-		
-		return false;
-	},
-	
-	/**
-	 * Checks whether a word exists in the current dictionary.
-	 *
-	 * @param {String} word The word to check.
-	 * @returns {Boolean}
-	 */
-	
-	checkExact : function (word) {
-		var ruleCodes = this.dictionaryTable[word];
-		
-		if (typeof ruleCodes === 'undefined') {
-			// Check if this might be a compound word.
-			if ("COMPOUNDMIN" in this.flags && word.length >= this.flags.COMPOUNDMIN) {
-				for (var i = 0, _len = this.compoundRules.length; i < _len; i++) {
-					if (word.match(this.compoundRules[i])) {
-						return true;
-					}
-				}
-			}
-			
-			return false;
-		}
-		else {
-			for (var i = 0, _len = ruleCodes.length; i < _len; i++) {
-				if (!this.hasFlag(word, "ONLYINCOMPOUND", ruleCodes[i])) {
-					return true;
-				}
-			}
-			
-			return false;
-		}
-	},
-	
-	/**
-	 * Looks up whether a given word is flagged with a given flag.
-	 *
-	 * @param {String} word The word in question.
-	 * @param {String} flag The flag in question.
-	 * @return {Boolean}
-	 */
-	 
-	hasFlag : function (word, flag, wordFlags) {
-		if (flag in this.flags) {
-			if (typeof wordFlags === 'undefined') {
-				var wordFlags = Array.prototype.concat.apply([], this.dictionaryTable[word]);
-			}
-			
-			if (wordFlags && wordFlags.indexOf(this.flags[flag]) !== -1) {
-				return true;
-			}
-		}
-		
-		return false;
-	},
-	
-	/**
-	 * Returns a list of suggestions for a misspelled word.
-	 *
-	 * @see http://www.norvig.com/spell-correct.html for the basis of this suggestor.
-	 * This suggestor is primitive, but it works.
-	 *
-	 * @param {String} word The misspelling.
-	 * @param {Number} [limit=5] The maximum number of suggestions to return.
-	 * @returns {String[]} The array of suggestions.
-	 */
-	
-	alphabet : "",
-	
-	suggest : function (word, limit) {
-		if (!limit) limit = 5;
-		
-		if (this.check(word)) return [];
-		
-		// Check the replacement table.
-		for (var i = 0, _len = this.replacementTable.length; i < _len; i++) {
-			var replacementEntry = this.replacementTable[i];
-			
-			if (word.indexOf(replacementEntry[0]) !== -1) {
-				var correctedWord = word.replace(replacementEntry[0], replacementEntry[1]);
-				
-				if (this.check(correctedWord)) {
-					return [ correctedWord ];
-				}
-			}
-		}
-		
-		var self = this;
-		self.alphabet = "abcdefghijklmnopqrstuvwxyz";
-		
-		/*
-		if (!self.alphabet) {
-			// Use the alphabet as implicitly defined by the words in the dictionary.
-			var alphaHash = {};
-			
-			for (var i in self.dictionaryTable) {
-				for (var j = 0, _len = i.length; j < _len; j++) {
-					alphaHash[i[j]] = true;
-				}
-			}
-			
-			for (var i in alphaHash) {
-				self.alphabet += i;
-			}
-			
-			var alphaArray = self.alphabet.split("");
-			alphaArray.sort();
-			self.alphabet = alphaArray.join("");
-		}
-		*/
-		
-		function edits1(words) {
-			var rv = [];
-			
-			for (var ii = 0, _iilen = words.length; ii < _iilen; ii++) {
-				var word = words[ii];
-				
-				var splits = [];
-			
-				for (var i = 0, _len = word.length + 1; i < _len; i++) {
-					splits.push([ word.substring(0, i), word.substring(i, word.length) ]);
-				}
-			
-				var deletes = [];
-			
-				for (var i = 0, _len = splits.length; i < _len; i++) {
-					var s = splits[i];
-				
-					if (s[1]) {
-						deletes.push(s[0] + s[1].substring(1));
-					}
-				}
-			
-				var transposes = [];
-			
-				for (var i = 0, _len = splits.length; i < _len; i++) {
-					var s = splits[i];
-				
-					if (s[1].length > 1) {
-						transposes.push(s[0] + s[1][1] + s[1][0] + s[1].substring(2));
-					}
-				}
-			
-				var replaces = [];
-			
-				for (var i = 0, _len = splits.length; i < _len; i++) {
-					var s = splits[i];
-				
-					if (s[1]) {
-						for (var j = 0, _jlen = self.alphabet.length; j < _jlen; j++) {
-							replaces.push(s[0] + self.alphabet[j] + s[1].substring(1));
-						}
-					}
-				}
-			
-				var inserts = [];
-			
-				for (var i = 0, _len = splits.length; i < _len; i++) {
-					var s = splits[i];
-				
-					if (s[1]) {
-						for (var j = 0, _jlen = self.alphabet.length; j < _jlen; j++) {
-							replaces.push(s[0] + self.alphabet[j] + s[1]);
-						}
-					}
-				}
-			
-				rv = rv.concat(deletes);
-				rv = rv.concat(transposes);
-				rv = rv.concat(replaces);
-				rv = rv.concat(inserts);
-			}
-			
-			return rv;
-		}
-		
-		function known(words) {
-			var rv = [];
-			
-			for (var i = 0; i < words.length; i++) {
-				if (self.check(words[i])) {
-					rv.push(words[i]);
-				}
-			}
-			
-			return rv;
-		}
-		
-		function correct(word) {
-			// Get the edit-distance-1 and edit-distance-2 forms of this word.
-			var ed1 = edits1([word]);
-			var ed2 = edits1(ed1);
-			
-			var corrections = known(ed1).concat(known(ed2));
-			
-			// Sort the edits based on how many different ways they were created.
-			var weighted_corrections = {};
-			
-			for (var i = 0, _len = corrections.length; i < _len; i++) {
-				if (!(corrections[i] in weighted_corrections)) {
-					weighted_corrections[corrections[i]] = 1;
-				}
-				else {
-					weighted_corrections[corrections[i]] += 1;
-				}
-			}
-			
-			var sorted_corrections = [];
-			
-			for (var i in weighted_corrections) {
-				sorted_corrections.push([ i, weighted_corrections[i] ]);
-			}
-			
-			function sorter(a, b) {
-				if (a[1] < b[1]) {
-					return -1;
-				}
-				
-				return 1;
-			}
-			
-			sorted_corrections.sort(sorter).reverse();
-			
-			var rv = [];
-			
-			for (var i = 0, _len = Math.min(limit, sorted_corrections.length); i < _len; i++) {
-				if (!self.hasFlag(sorted_corrections[i][0], "NOSUGGEST")) {
-					rv.push(sorted_corrections[i][0]);
-				}
-			}
-			
-			return rv;
-		}
-		
-		return correct(word);
-	}
-};
\ No newline at end of file