kallithea Changeset - cd23cc2c9961

Changeset - cd23cc2c9961

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Marcin Kuzminski - 12 years ago 2013-06-20 22:43:57
marcin@python-works.com

update codemirror

2 files changed with 5163 insertions and 2677 deletions:

rhodecode/public/css/codemirror.css

180

108

rhodecode/public/js/codemirror.js

4983

2569

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rhodecode/public/css/codemirror.css

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 /* BASICS */
 .CodeMirror {
-  line-height: 1em;
+  /* Set height, width, borders, and global font properties here */
   font-family: monospace;
   height: 300px;
+}
 .CodeMirror-scroll {
   /* Set scrolling behaviour here */
   overflow: auto;
+}
 /* PADDING */
 .CodeMirror-lines {
   padding: 4px 0; /* Vertical padding around content */
+}
 .CodeMirror pre {
   padding: 0 4px; /* Horizontal padding of content */
+}
 .CodeMirror-scrollbar-filler {
   background-color: white; /* The little square between H and V scrollbars */
+}
 /* GUTTER */
 .CodeMirror-gutters {
   border-right: 1px solid #ddd;
   background-color: #f7f7f7;
+}
 .CodeMirror-linenumbers {}
 .CodeMirror-linenumber {
   padding: 0 3px 0 5px;
   min-width: 20px;
   text-align: right;
   color: #999;
+}
 /* CURSOR */
   /* Necessary so the scrollbar can be absolutely positioned within the wrapper on Lion. */
 .CodeMirror div.CodeMirror-cursor {
   border-left: 1px solid black;
   z-index: 3;
+}
 /* Shown when moving in bi-directional text */
 .CodeMirror div.CodeMirror-secondarycursor {
   border-left: 1px solid silver;
+}
 .CodeMirror.cm-keymap-fat-cursor div.CodeMirror-cursor {
   width: auto;
   border: 0;
   background: #7e7;
   z-index: 1;
+}
 /* Can style cursor different in overwrite (non-insert) mode */
 .CodeMirror div.CodeMirror-cursor.CodeMirror-overwrite {}
 .cm-tab { display: inline-block; }
 /* DEFAULT THEME */
 .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 {color: black;}
 .cm-s-default .cm-variable-2 {color: #05a;}
 .cm-s-default .cm-variable-3 {color: #085;}
 .cm-s-default .cm-property {color: black;}
 .cm-s-default .cm-operator {color: black;}
 .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-error {color: #f00;}
 .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-header {color: blue;}
 .cm-s-default .cm-quote {color: #090;}
 .cm-s-default .cm-hr {color: #999;}
 .cm-s-default .cm-link {color: #00c;}
 .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-invalidchar {color: #f00;}
 div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
 div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
 /* STOP */
 /* The rest of this file contains styles related to the mechanics of
    the editor. You probably shouldn't touch them. */
 .CodeMirror {
   line-height: 1;
   position: relative;
   /* This prevents unwanted scrollbars from showing up on the body and wrapper in IE. */
   overflow: hidden;
   background: white;
   color: black;
+}
 .CodeMirror-scroll {
   overflow: auto;
   height: 300px;
   /* This is needed to prevent an IE[67] bug where the scrolled content
      is visible outside of the scrolling box. */
   /* 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; padding-right: 30px;
   height: 100%;
   outline: none; /* Prevent dragging from highlighting the element */
   position: relative;
   outline: none;
+}
 .CodeMirror-sizer {
   position: relative;
+}
 /* Vertical scrollbar */
 .CodeMirror-scrollbar {
 /* 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 {
   position: absolute;
   z-index: 6;
   display: none;
+}
 .CodeMirror-vscrollbar {
   right: 0; top: 0;
   overflow-x: hidden;
   overflow-y: scroll;
   z-index: 5;
+}
 .CodeMirror-scrollbar-inner {
   /* This needs to have a nonzero width in order for the scrollbar to appear
      in Firefox and IE9. */
   width: 1px;
+}
 .CodeMirror-scrollbar.cm-sb-overlap {
   /* Ensure that the scrollbar appears in Lion, and that it overlaps the content
      rather than sitting to the right of it. */
   position: absolute;
   z-index: 1;
   float: none;
   right: 0;
   min-width: 12px;
 .CodeMirror-hscrollbar {
   bottom: 0; left: 0;
   overflow-y: hidden;
   overflow-x: scroll;
+}
 .CodeMirror-scrollbar.cm-sb-nonoverlap {
   min-width: 12px;
+}
 .CodeMirror-scrollbar.cm-sb-ie7 {
   min-width: 18px;
 .CodeMirror-scrollbar-filler {
   right: 0; bottom: 0;
   z-index: 6;
+}
-.CodeMirror-gutter {
+.CodeMirror-gutters {
   position: absolute; left: 0; top: 0;
   z-index: 10;
   background-color: #f7f7f7;
   border-right: 1px solid #eee;
   min-width: 2em;
   height: 100%;
   padding-bottom: 30px;
   z-index: 3;
+}
 .CodeMirror-gutter-text {
   color: #aaa;
   text-align: right;
   padding: .4em .2em .4em .4em;
   white-space: pre !important;
 .CodeMirror-gutter {
   height: 100%;
   padding-bottom: 30px;
   margin-bottom: -32px;
   display: inline-block;
   /* Hack to make IE7 behave */
   *zoom:1;
   *display:inline;
+}
 .CodeMirror-gutter-elt {
   position: absolute;
   cursor: default;
   z-index: 4;
+}
 .CodeMirror-lines {
   padding: .4em;
   white-space: pre;
   cursor: text;
+}
 .CodeMirror pre {
   -moz-border-radius: 0;
   -webkit-border-radius: 0;
   -o-border-radius: 0;
   border-radius: 0;
   border-width: 0; margin: 0; padding: 0; background: transparent;
   /* 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;
-  padding: 0; margin: 0;
   margin: 0;
   white-space: pre;
   word-wrap: normal;
   line-height: inherit;
   color: inherit;
   z-index: 2;
   position: relative;
   overflow: visible;
+}
 .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 {
   display: inline-block;
+}
 .CodeMirror-wrap .CodeMirror-scroll {
   overflow-x: hidden;
+}
 .CodeMirror textarea {
   outline: none !important;
 .CodeMirror-measure {
   position: absolute;
   width: 100%; height: 0px;
   overflow: hidden;
   visibility: hidden;
+}
 .CodeMirror-measure pre { position: static; }
 .CodeMirror pre.CodeMirror-cursor {
   z-index: 10;
 .CodeMirror div.CodeMirror-cursor {
   position: absolute;
   visibility: hidden;
   border-left: 1px solid black;
   border-right: none;
   width: 0;
+}
 .cm-keymap-fat-cursor pre.CodeMirror-cursor {
   width: auto;
   border: 0;
   background: transparent;
   background: rgba(0, 200, 0, .4);
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#6600c800, endColorstr=#4c00c800);
+}
 /* Kludge to turn off filter in ie9+, which also accepts rgba */
 .cm-keymap-fat-cursor pre.CodeMirror-cursor:not(#nonsense_id) {
   filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
+}
 .CodeMirror pre.CodeMirror-cursor.CodeMirror-overwrite {}
 .CodeMirror-focused pre.CodeMirror-cursor {
 .CodeMirror-focused div.CodeMirror-cursor {
   visibility: visible;
+}
 div.CodeMirror-selected { background: #d9d9d9; }
 .CodeMirror-focused div.CodeMirror-selected { background: #d7d4f0; }
 .CodeMirror-selected { background: #d9d9d9; }
 .CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; }
-.CodeMirror-searching {
+.cm-searching {
   background: #ffa;
   background: rgba(255, 255, 0, .4);
+}
 /* Default theme */
 .cm-s-default span.cm-keyword {color: #708;}
 .cm-s-default span.cm-atom {color: #219;}
 .cm-s-default span.cm-number {color: #164;}
 .cm-s-default span.cm-def {color: #00f;}
 .cm-s-default span.cm-variable {color: black;}
 .cm-s-default span.cm-variable-2 {color: #05a;}
 .cm-s-default span.cm-variable-3 {color: #085;}
 .cm-s-default span.cm-property {color: black;}
 .cm-s-default span.cm-operator {color: black;}
 .cm-s-default span.cm-comment {color: #a50;}
 .cm-s-default span.cm-string {color: #a11;}
 .cm-s-default span.cm-string-2 {color: #f50;}
 .cm-s-default span.cm-meta {color: #555;}
 .cm-s-default span.cm-error {color: #f00;}
 .cm-s-default span.cm-qualifier {color: #555;}
 .cm-s-default span.cm-builtin {color: #30a;}
 .cm-s-default span.cm-bracket {color: #997;}
 .cm-s-default span.cm-tag {color: #170;}
 .cm-s-default span.cm-attribute {color: #00c;}
 .cm-s-default span.cm-header {color: blue;}
 .cm-s-default span.cm-quote {color: #090;}
 .cm-s-default span.cm-hr {color: #999;}
 .cm-s-default span.cm-link {color: #00c;}
 span.cm-header, span.cm-strong {font-weight: bold;}
 span.cm-em {font-style: italic;}
 span.cm-emstrong {font-style: italic; font-weight: bold;}
 span.cm-link {text-decoration: underline;}
 span.cm-invalidchar {color: #f00;}
 div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
 div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
 /* IE7 hack to prevent it from returning funny offsetTops on the spans */
 .CodeMirror span { *vertical-align: text-bottom; }
 @media print {
   /* Hide the cursor when printing */
-  .CodeMirror pre.CodeMirror-cursor {
+  .CodeMirror div.CodeMirror-cursor {
     visibility: hidden;
+  }
+}

rhodecode/public/js/codemirror.js

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 // All functions that need access to the editor's state live inside
 // the CodeMirror function. Below that, at the bottom of the file,
 // some utilities are defined.
 // CodeMirror is the only global var we claim
 window.CodeMirror = (function() {
   "use strict";
   // This is the function that produces an editor instance. Its
   // closure is used to store the editor state.
   function CodeMirror(place, givenOptions) {
   // BROWSER SNIFFING
   // Crude, but necessary to handle a number of hard-to-feature-detect
   // bugs and behavior differences.
   var gecko = /gecko\/\d/i.test(navigator.userAgent);
   var ie = /MSIE \d/.test(navigator.userAgent);
   var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8);
   var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9);
   var webkit = /WebKit\//.test(navigator.userAgent);
   var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
   var chrome = /Chrome\//.test(navigator.userAgent);
   var opera = /Opera\//.test(navigator.userAgent);
   var safari = /Apple Computer/.test(navigator.vendor);
   var khtml = /KHTML\//.test(navigator.userAgent);
   var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
   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 = /windows/i.test(navigator.platform);
   var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
   if (opera_version) opera_version = Number(opera_version[1]);
   // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
   var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
   var captureMiddleClick = gecko || (ie && !ie_lt9);
   // Optimize some code when these features are not used
   var sawReadOnlySpans = false, sawCollapsedSpans = false;
   // CONSTRUCTOR
   function CodeMirror(place, options) {
     if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
     this.options = options = options || {};
     // Determine effective options based on given values and defaults.
     var options = {}, defaults = CodeMirror.defaults;
     for (var opt in defaults)
       if (defaults.hasOwnProperty(opt))
         options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
     var input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em");
     input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
     for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
       options[opt] = defaults[opt];
     setGuttersForLineNumbers(options);
     var docStart = typeof options.value == "string" ? 0 : options.value.first;
     var display = this.display = makeDisplay(place, docStart);
     display.wrapper.CodeMirror = this;
     updateGutters(this);
     if (options.autofocus && !mobile) focusInput(this);
     this.state = {keyMaps: [],
                   overlays: [],
                   modeGen: 0,
                   overwrite: false, focused: false,
                   suppressEdits: false, pasteIncoming: false,
                   draggingText: false,
                   highlight: new Delayed()};
     themeChanged(this);
     if (options.lineWrapping)
       this.display.wrapper.className += " CodeMirror-wrap";
     var doc = options.value;
     if (typeof doc == "string") doc = new Doc(options.value, options.mode);
     operation(this, attachDoc)(this, doc);
     // Override magic textarea content restore that IE sometimes does
     // on our hidden textarea on reload
     if (ie) setTimeout(bind(resetInput, this, true), 20);
     registerEventHandlers(this);
     // IE throws unspecified error in certain cases, when
     // trying to access activeElement before onload
     var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
     if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20);
     else onBlur(this);
     operation(this, function() {
       for (var opt in optionHandlers)
         if (optionHandlers.propertyIsEnumerable(opt))
           optionHandlers[opt](this, options[opt], Init);
       for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
     })();
+  }
   // DISPLAY CONSTRUCTOR
   function makeDisplay(place, docStart) {
     var d = {};
     var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;");
     if (webkit) input.style.width = "1000px";
     else input.setAttribute("wrap", "off");
     // if border: 0; -- iOS fails to open keyboard (issue #1287)
     if (ios) input.style.border = "1px solid black";
     input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
     // Wraps and hides input textarea
     var inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
     // The empty scrollbar content, used solely for managing the scrollbar thumb.
     var scrollbarInner = elt("div", null, "CodeMirror-scrollbar-inner");
     // The vertical scrollbar. Horizontal scrolling is handled by the scroller itself.
     var scrollbar = elt("div", [scrollbarInner], "CodeMirror-scrollbar");
     d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
     // The actual fake scrollbars.
     d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
     d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
     d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
     // DIVs containing the selection and the actual code
     var lineDiv = elt("div"), selectionDiv = elt("div", null, null, "position: relative; z-index: -1");
     d.lineDiv = elt("div");
     d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
     // Blinky cursor, and element used to ensure cursor fits at the end of a line
     var cursor = elt("pre", "\u00a0", "CodeMirror-cursor"), widthForcer = elt("pre", "\u00a0", "CodeMirror-cursor", "visibility: hidden");
     d.cursor = elt("div", "\u00a0", "CodeMirror-cursor");
     // Secondary cursor, shown when on a 'jump' in bi-directional text
     d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
     // Used to measure text size
     var measure = elt("div", null, null, "position: absolute; width: 100%; height: 0px; overflow: hidden; visibility: hidden;");
     var lineSpace = elt("div", [measure, cursor, widthForcer, selectionDiv, lineDiv], null, "position: relative; z-index: 0");
     var gutterText = elt("div", null, "CodeMirror-gutter-text"), gutter = elt("div", [gutterText], "CodeMirror-gutter");
     d.measure = elt("div", null, "CodeMirror-measure");
     // Wraps everything that needs to exist inside the vertically-padded coordinate system
     d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
                          null, "position: relative; outline: none");
     // Moved around its parent to cover visible view
-    var mover = elt("div", [gutter, elt("div", [lineSpace], "CodeMirror-lines")], null, "position: relative");
+    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
     // Set to the height of the text, causes scrolling
     var sizer = elt("div", [mover], null, "position: relative");
     d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
     // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
     d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
     // Will contain the gutters, if any
     d.gutters = elt("div", null, "CodeMirror-gutters");
     d.lineGutter = null;
     // Helper element to properly size the gutter backgrounds
     var scrollerInner = elt("div", [d.sizer, d.heightForcer, d.gutters], null, "position: relative; min-height: 100%");
     // Provides scrolling
     var scroller = elt("div", [sizer], "CodeMirror-scroll");
     scroller.setAttribute("tabIndex", "-1");
     d.scroller = elt("div", [scrollerInner], "CodeMirror-scroll");
     d.scroller.setAttribute("tabIndex", "-1");
     // The element in which the editor lives.
     var wrapper = elt("div", [inputDiv, scrollbar, scroller], "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : ""));
     if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
     themeChanged(); keyMapChanged();
     d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
                             d.scrollbarFiller, d.scroller], "CodeMirror");
     // Work around IE7 z-index bug
     if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
     if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);
     // Needed to hide big blue blinking cursor on Mobile Safari
     if (ios) input.style.width = "0px";
     if (!webkit) scroller.draggable = true;
     lineSpace.style.outline = "none";
     if (options.tabindex != null) input.tabIndex = options.tabindex;
     if (options.autofocus) focusInput();
     if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";
     if (!webkit) d.scroller.draggable = true;
     // Needed to handle Tab key in KHTML
     if (khtml) inputDiv.style.height = "1px", inputDiv.style.position = "absolute";
     // Check for OS X >= 10.7. This has transparent scrollbars, so the
     // overlaying of one scrollbar with another won't work. This is a
     // temporary hack to simply turn off the overlay scrollbar. See
     // issue #727.
     if (mac_geLion) { scrollbar.style.zIndex = -2; scrollbar.style.visibility = "hidden"; }
     if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
     // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
     else if (ie_lt8) scrollbar.style.minWidth = "18px";
     // Delayed object wrap timeouts, making sure only one is active. blinker holds an interval.
     var poll = new Delayed(), highlight = new Delayed(), blinker;
     // mode holds a mode API object. doc is the tree of Line objects,
     // frontier is the point up to which the content has been parsed,
     // and history the undo history (instance of History constructor).
     var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), frontier = 0, focused;
     loadMode();
     // The selection. These are always maintained to point at valid
     // positions. Inverted is used to remember that the user is
     // selecting bottom-to-top.
     var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false};
     // Selection-related flags. shiftSelecting obviously tracks
     // whether the user is holding shift.
     var shiftSelecting, lastClick, lastDoubleClick, lastScrollTop = 0, draggingText,
         overwrite = false, suppressEdits = false, pasteIncoming = false;
     // Variables used by startOperation/endOperation to track what
     // happened during the operation.
     var updateInput, userSelChange, changes, textChanged, selectionChanged,
         gutterDirty, callbacks;
     else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";
     // Current visible range (may be bigger than the view window).
     var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0;
     // bracketHighlighted is used to remember that a bracket has been
     // marked.
     var bracketHighlighted;
     d.viewOffset = d.lastSizeC = 0;
     d.showingFrom = d.showingTo = docStart;
     // 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;
     // See readInput and resetInput
     d.prevInput = "";
     // Set to true when a non-horizontal-scrolling widget is added. As
     // an optimization, widget aligning is skipped when d is false.
     d.alignWidgets = false;
     // Flag that indicates whether we currently expect input to appear
     // (after some event like 'keypress' or 'input') and are polling
     // intensively.
     d.pollingFast = false;
     // Self-resetting timeout for the poller
     d.poll = new Delayed();
     d.cachedCharWidth = d.cachedTextHeight = null;
     d.measureLineCache = [];
     d.measureLineCachePos = 0;
     // Tracks when resetInput has punted to just putting a short
     // string instead of the (large) selection.
     d.inaccurateSelection = false;
     // Tracks the maximum line length so that the horizontal scrollbar
     // can be kept static when scrolling.
     var maxLine = getLine(0), updateMaxLine = false, maxLineChanged = true;
     var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
     var goalColumn = null;
     // Initialize the content.
     operation(function(){setValue(options.value || ""); updateInput = false;})();
     var history = new History();
     // Register our event handlers.
     connect(scroller, "mousedown", operation(onMouseDown));
     connect(scroller, "dblclick", operation(onDoubleClick));
     connect(lineSpace, "selectstart", e_preventDefault);
     d.maxLine = null;
     d.maxLineLength = 0;
     d.maxLineChanged = false;
     // Used for measuring wheel scrolling granularity
     d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
     return 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);
     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) {
       cm.display.wrapper.className += " CodeMirror-wrap";
       cm.display.sizer.style.minWidth = "";
     } else {
       cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
       computeMaxLength(cm);
+    }
     estimateLineHeights(cm);
     regChange(cm);
     clearCaches(cm);
     setTimeout(function(){updateScrollbars(cm.display, cm.doc.height);}, 100);
+  }
   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;
       else if (wrapping)
         return (Math.ceil(line.text.length / perLine) || 1) * th;
       else
         return 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 keyMapChanged(cm) {
     var style = keyMap[cm.options.keyMap].style;
     cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
       (style ? " cm-keymap-" + style : "");
+  }
   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);
+  }
   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";
+  }
   function lineLength(doc, line) {
     if (line.height == 0) return 0;
     var len = line.text.length, merged, cur = line;
     while (merged = collapsedSpanAtStart(cur)) {
       var found = merged.find();
       cur = getLine(doc, found.from.line);
       len += found.from.ch - found.to.ch;
+    }
     cur = line;
     while (merged = collapsedSpanAtEnd(cur)) {
       var found = merged.find();
       len -= cur.text.length - found.from.ch;
       cur = getLine(doc, found.to.line);
       len += cur.text.length - found.to.ch;
+    }
     return len;
+  }
   function computeMaxLength(cm) {
     var d = cm.display, doc = cm.doc;
     d.maxLine = getLine(doc, doc.first);
     d.maxLineLength = lineLength(doc, d.maxLine);
     d.maxLineChanged = true;
     doc.iter(function(line) {
       var len = lineLength(doc, 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 = false;
     for (var i = 0; i < options.gutters.length; ++i) {
       if (options.gutters[i] == "CodeMirror-linenumbers") {
         if (options.lineNumbers) found = true;
         else options.gutters.splice(i--, 1);
+      }
+    }
     if (!found && options.lineNumbers)
       options.gutters.push("CodeMirror-linenumbers");
+  }
   // SCROLLBARS
   // Re-synchronize the fake scrollbars with the actual size of the
   // content. Optionally force a scrollTop.
   function updateScrollbars(d /* display */, docHeight) {
     var totalHeight = docHeight + paddingVert(d);
     d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px";
     var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight);
     var needsH = d.scroller.scrollWidth > d.scroller.clientWidth;
     var needsV = scrollHeight > d.scroller.clientHeight;
     if (needsV) {
       d.scrollbarV.style.display = "block";
       d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
       d.scrollbarV.firstChild.style.height =
         (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
     } else d.scrollbarV.style.display = "";
     if (needsH) {
       d.scrollbarH.style.display = "block";
       d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
       d.scrollbarH.firstChild.style.width =
         (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
     } else d.scrollbarH.style.display = "";
     if (needsH && needsV) {
       d.scrollbarFiller.style.display = "block";
       d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
     } else d.scrollbarFiller.style.display = "";
     if (mac_geLion && scrollbarWidth(d.measure) === 0)
       d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
+  }
   function visibleLines(display, doc, viewPort) {
     var top = display.scroller.scrollTop, height = display.wrapper.clientHeight;
     if (typeof viewPort == "number") top = viewPort;
     else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
     top = Math.floor(top - paddingTop(display));
     var bottom = Math.ceil(top + height);
     return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
+  }
   // LINE NUMBERS
   function alignHorizontally(cm) {
     var display = cm.display;
     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, l = comp + "px";
     for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
       for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
+    }
     if (cm.options.fixedGutter)
       display.gutters.style.left = (comp + gutterW) + "px";
+  }
   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);
       display.lineNumWidth = display.lineNumInnerWidth + padding;
       display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
       display.lineGutter.style.width = display.lineNumWidth + "px";
       return true;
+    }
     return false;
+  }
   function lineNumberFor(options, i) {
     return String(options.lineNumberFormatter(i + options.firstLineNumber));
+  }
   function compensateForHScroll(display) {
     return getRect(display.scroller).left - getRect(display.sizer).left;
+  }
   // DISPLAY DRAWING
   function updateDisplay(cm, changes, viewPort) {
     var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated;
     var visible = visibleLines(cm.display, cm.doc, viewPort);
     for (;;) {
       if (updateDisplayInner(cm, changes, visible)) {
         updated = true;
         signalLater(cm, "update", cm);
         if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
           signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
       } else break;
       updateSelection(cm);
       updateScrollbars(cm.display, cm.doc.height);
       // Clip forced viewport to actual scrollable area
       if (viewPort)
         viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight,
                             typeof viewPort == "number" ? viewPort : viewPort.top);
       visible = visibleLines(cm.display, cm.doc, viewPort);
       if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo)
         break;
       changes = [];
+    }
     return updated;
+  }
   // Uses a set of changes plus the current scroll position to
   // determine which DOM updates have to be made, and makes the
   // updates.
   function updateDisplayInner(cm, changes, visible) {
     var display = cm.display, doc = cm.doc;
     if (!display.wrapper.clientWidth) {
       display.showingFrom = display.showingTo = doc.first;
       display.viewOffset = 0;
       return;
+    }
     // Bail out if the visible area is already rendered and nothing changed.
     if (changes.length == 0 &&
         visible.from > display.showingFrom && visible.to < display.showingTo)
       return;
     if (maybeUpdateLineNumberWidth(cm))
       changes = [{from: doc.first, to: doc.first + doc.size}];
     var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px";
     display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0";
     // Used to determine which lines need their line numbers updated
     var positionsChangedFrom = Infinity;
     if (cm.options.lineNumbers)
       for (var i = 0; i < changes.length; ++i)
         if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; }
     var end = doc.first + doc.size;
     var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
     var to = Math.min(end, visible.to + cm.options.viewportMargin);
     if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom);
     if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo);
     if (sawCollapsedSpans) {
       from = lineNo(visualLine(doc, getLine(doc, from)));
       while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to;
+    }
     // Create a range of theoretically intact lines, and punch holes
     // in that using the change info.
     var intact = [{from: Math.max(display.showingFrom, doc.first),
                    to: Math.min(display.showingTo, end)}];
     if (intact[0].from >= intact[0].to) intact = [];
     else intact = computeIntact(intact, changes);
     // When merged lines are present, we might have to reduce the
     // intact ranges because changes in continued fragments of the
     // intact lines do require the lines to be redrawn.
     if (sawCollapsedSpans)
       for (var i = 0; i < intact.length; ++i) {
         var range = intact[i], merged;
         while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) {
           var newTo = merged.find().from.line;
           if (newTo > range.from) range.to = newTo;
           else { intact.splice(i--, 1); break; }
+        }
+      }
     // Clip off the parts that won't be visible
     var intactLines = 0;
     for (var i = 0; i < intact.length; ++i) {
       var range = intact[i];
       if (range.from < from) range.from = from;
       if (range.to > to) range.to = to;
       if (range.from >= range.to) intact.splice(i--, 1);
       else intactLines += range.to - range.from;
+    }
     if (intactLines == to - from && from == display.showingFrom && to == display.showingTo) {
       updateViewOffset(cm);
       return;
+    }
     intact.sort(function(a, b) {return a.from - b.from;});
     // Avoid crashing on IE's "unspecified error" when in iframes
     try {
       var focused = document.activeElement;
     } catch(e) {}
     if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
     patchDisplay(cm, from, to, intact, positionsChangedFrom);
     display.lineDiv.style.display = "";
     if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus();
     var different = from != display.showingFrom || to != display.showingTo ||
       display.lastSizeC != display.wrapper.clientHeight;
     // This is just a bogus formula that detects when the editor is
     // resized or the font size changes.
     if (different) display.lastSizeC = display.wrapper.clientHeight;
     display.showingFrom = from; display.showingTo = to;
     startWorker(cm, 100);
     var prevBottom = display.lineDiv.offsetTop;
     for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) {
       if (ie_lt8) {
         var bot = node.offsetTop + node.offsetHeight;
         height = bot - prevBottom;
         prevBottom = bot;
       } else {
         var box = getRect(node);
         height = box.bottom - box.top;
+      }
       var diff = node.lineObj.height - height;
       if (height < 2) height = textHeight(display);
       if (diff > .001 || diff < -.001) {
         updateLineHeight(node.lineObj, height);
         var widgets = node.lineObj.widgets;
         if (widgets) for (var i = 0; i < widgets.length; ++i)
           widgets[i].height = widgets[i].node.offsetHeight;
+      }
+    }
     updateViewOffset(cm);
     return true;
+  }
   function updateViewOffset(cm) {
     var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom));
     // Position the mover div to align with the current virtual scroll position
     cm.display.mover.style.top = off + "px";
+  }
   function computeIntact(intact, changes) {
     for (var i = 0, l = changes.length || 0; i < l; ++i) {
       var change = changes[i], intact2 = [], diff = change.diff || 0;
       for (var j = 0, l2 = intact.length; j < l2; ++j) {
         var range = intact[j];
         if (change.to <= range.from && change.diff) {
           intact2.push({from: range.from + diff, to: range.to + diff});
         } else if (change.to <= range.from || change.from >= range.to) {
           intact2.push(range);
         } else {
           if (change.from > range.from)
             intact2.push({from: range.from, to: change.from});
           if (change.to < range.to)
             intact2.push({from: change.to + diff, to: range.to + diff});
+        }
+      }
       intact = intact2;
+    }
     return intact;
+  }
   function getDimensions(cm) {
     var d = cm.display, left = {}, width = {};
     for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
       left[cm.options.gutters[i]] = n.offsetLeft;
       width[cm.options.gutters[i]] = n.offsetWidth;
+    }
     return {fixedPos: compensateForHScroll(d),
             gutterTotalWidth: d.gutters.offsetWidth,
             gutterLeft: left,
             gutterWidth: width,
             wrapperWidth: d.wrapper.clientWidth};
+  }
   function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
     var dims = getDimensions(cm);
     var display = cm.display, lineNumbers = cm.options.lineNumbers;
     if (!intact.length && (!webkit || !cm.display.currentWheelTarget))
       removeChildren(display.lineDiv);
     var container = display.lineDiv, cur = container.firstChild;
     function rm(node) {
       var next = node.nextSibling;
       if (webkit && mac && cm.display.currentWheelTarget == node) {
         node.style.display = "none";
         node.lineObj = null;
       } else {
         node.parentNode.removeChild(node);
+      }
       return next;
+    }
     var nextIntact = intact.shift(), lineN = from;
     cm.doc.iter(from, to, function(line) {
       if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift();
       if (lineIsHidden(cm.doc, line)) {
         if (line.height != 0) updateLineHeight(line, 0);
         if (line.widgets && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i)
           if (line.widgets[i].showIfHidden) {
             var prev = cur.previousSibling;
             if (/pre/i.test(prev.nodeName)) {
               var wrap = elt("div", null, null, "position: relative");
               prev.parentNode.replaceChild(wrap, prev);
               wrap.appendChild(prev);
               prev = wrap;
+            }
             var wnode = prev.appendChild(elt("div", [line.widgets[i].node], "CodeMirror-linewidget"));
             positionLineWidget(line.widgets[i], wnode, prev, dims);
+          }
       } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) {
         // This line is intact. Skip to the actual node. Update its
         // line number if needed.
         while (cur.lineObj != line) cur = rm(cur);
         if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber)
           setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN));
         cur = cur.nextSibling;
       } else {
         // For lines with widgets, make an attempt to find and reuse
         // the existing element, so that widgets aren't needlessly
         // removed and re-inserted into the dom
         if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling)
           if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; }
         // This line needs to be generated.
         var lineNode = buildLineElement(cm, line, lineN, dims, reuse);
         if (lineNode != reuse) {
           container.insertBefore(lineNode, cur);
         } else {
           while (cur != reuse) cur = rm(cur);
           cur = cur.nextSibling;
+        }
         lineNode.lineObj = line;
+      }
       ++lineN;
     });
     while (cur) cur = rm(cur);
+  }
   function buildLineElement(cm, line, lineNo, dims, reuse) {
     var lineElement = lineContent(cm, line);
     var markers = line.gutterMarkers, display = cm.display, wrap;
     if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && !line.widgets)
       return lineElement;
     // Lines with gutter elements, widgets or a background class need
     // to be wrapped again, and have the extra elements added to the
     // wrapper div
     if (reuse) {
       reuse.alignable = null;
       var isOk = true, widgetsSeen = 0;
       for (var n = reuse.firstChild, next; n; n = next) {
         next = n.nextSibling;
         if (!/\bCodeMirror-linewidget\b/.test(n.className)) {
           reuse.removeChild(n);
         } else {
           for (var i = 0, first = true; i < line.widgets.length; ++i) {
             var widget = line.widgets[i], isFirst = false;
             if (!widget.above) { isFirst = first; first = false; }
             if (widget.node == n.firstChild) {
               positionLineWidget(widget, n, reuse, dims);
               ++widgetsSeen;
               if (isFirst) reuse.insertBefore(lineElement, n);
               break;
+            }
+          }
           if (i == line.widgets.length) { isOk = false; break; }
+        }
+      }
       if (isOk && widgetsSeen == line.widgets.length) {
         wrap = reuse;
         reuse.className = line.wrapClass || "";
+      }
+    }
     if (!wrap) {
       wrap = elt("div", null, line.wrapClass, "position: relative");
       wrap.appendChild(lineElement);
+    }
     // Kludge to make sure the styled element lies behind the selection (by z-index)
     if (line.bgClass)
       wrap.insertBefore(elt("div", null, line.bgClass + " CodeMirror-linebackground"), wrap.firstChild);
     if (cm.options.lineNumbers || markers) {
       var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " +
                                              (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
                                          wrap.firstChild);
       if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap);
       if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
         wrap.lineNumber = gutterWrap.appendChild(
           elt("div", lineNumberFor(cm.options, lineNo),
               "CodeMirror-linenumber CodeMirror-gutter-elt",
               "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
               + 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"));
+        }
+    }
     if (ie_lt8) wrap.style.zIndex = 2;
     if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
       var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
       positionLineWidget(widget, node, wrap, dims);
       if (widget.above)
         wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
       else
         wrap.appendChild(node);
       signalLater(widget, "redraw");
+    }
     return wrap;
+  }
   function positionLineWidget(widget, node, wrap, dims) {
     if (widget.noHScroll) {
       (wrap.alignable || (wrap.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";
+    }
+  }
   // SELECTION / CURSOR
   function updateSelection(cm) {
     var display = cm.display;
     var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to);
     if (collapsed || cm.options.showCursorWhenSelecting)
       updateSelectionCursor(cm);
     else
       display.cursor.style.display = display.otherCursor.style.display = "none";
     if (!collapsed)
       updateSelectionRange(cm);
     else
       display.selectionDiv.style.display = "none";
     // Move the hidden textarea near the cursor to prevent scrolling artifacts
     if (cm.options.moveInputWithCursor) {
       var headPos = cursorCoords(cm, cm.doc.sel.head, "div");
       var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv);
       display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
                                                         headPos.top + lineOff.top - wrapOff.top)) + "px";
       display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
                                                          headPos.left + lineOff.left - wrapOff.left)) + "px";
+    }
+  }
   // No selection, plain cursor
   function updateSelectionCursor(cm) {
     var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div");
     display.cursor.style.left = pos.left + "px";
     display.cursor.style.top = pos.top + "px";
     display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
     display.cursor.style.display = "";
     if (pos.other) {
       display.otherCursor.style.display = "";
       display.otherCursor.style.left = pos.other.left + "px";
       display.otherCursor.style.top = pos.other.top + "px";
       display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
     } else { display.otherCursor.style.display = "none"; }
+  }
   // Highlight selection
   function updateSelectionRange(cm) {
     var display = cm.display, doc = cm.doc, sel = cm.doc.sel;
     var fragment = document.createDocumentFragment();
     var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);
     function add(left, top, width, bottom) {
       if (top < 0) top = 0;
       fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
                                "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) +
                                "px; height: " + (bottom - top) + "px"));
+    }
     function drawForLine(line, fromArg, toArg, retTop) {
       var lineObj = getLine(doc, line);
       var lineLen = lineObj.text.length, rVal = retTop ? Infinity : -Infinity;
       function coords(ch) {
         return charCoords(cm, Pos(line, ch), "div", lineObj);
+      }
       iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
         var leftPos = coords(from), rightPos, left, right;
         if (from == to) {
           rightPos = leftPos;
           left = right = leftPos.left;
         } else {
           rightPos = coords(to - 1);
           if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
           left = leftPos.left;
           right = rightPos.right;
+        }
         if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
           add(left, leftPos.top, null, leftPos.bottom);
           left = pl;
           if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
+        }
         if (toArg == null && to == lineLen) right = clientWidth;
         if (fromArg == null && from == 0) left = pl;
         rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal);
         if (left < pl + 1) left = pl;
         add(left, rightPos.top, right - left, rightPos.bottom);
       });
       return rVal;
+    }
     if (sel.from.line == sel.to.line) {
       drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
     } else {
       var fromObj = getLine(doc, sel.from.line);
       var cur = fromObj, merged, path = [sel.from.line, sel.from.ch], singleLine;
       while (merged = collapsedSpanAtEnd(cur)) {
         var found = merged.find();
         path.push(found.from.ch, found.to.line, found.to.ch);
         if (found.to.line == sel.to.line) {
           path.push(sel.to.ch);
           singleLine = true;
           break;
+        }
         cur = getLine(doc, found.to.line);
+      }
       // This is a single, merged line
       if (singleLine) {
         for (var i = 0; i < path.length; i += 3)
           drawForLine(path[i], path[i+1], path[i+2]);
       } else {
         var middleTop, middleBot, toObj = getLine(doc, sel.to.line);
         if (sel.from.ch)
           // Draw the first line of selection.
           middleTop = drawForLine(sel.from.line, sel.from.ch, null, false);
         else
           // Simply include it in the middle block.
           middleTop = heightAtLine(cm, fromObj) - display.viewOffset;
         if (!sel.to.ch)
           middleBot = heightAtLine(cm, toObj) - display.viewOffset;
         else
           middleBot = drawForLine(sel.to.line, collapsedSpanAtStart(toObj) ? null : 0, sel.to.ch, true);
         if (middleTop < middleBot) add(pl, middleTop, null, middleBot);
+      }
+    }
     removeChildrenAndAdd(display.selectionDiv, fragment);
     display.selectionDiv.style.display = "";
+  }
   // Cursor-blinking
   function restartBlink(cm) {
     if (!cm.state.focused) return;
     var display = cm.display;
     clearInterval(display.blinker);
     var on = true;
     display.cursor.style.visibility = display.otherCursor.style.visibility = "";
     display.blinker = setInterval(function() {
       display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
     }, cm.options.cursorBlinkRate);
+  }
   // HIGHLIGHT WORKER
   function startWorker(cm, time) {
     if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo)
       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.showingTo) return;
     var end = +new Date + cm.options.workTime;
     var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
     var changed = [], prevChange;
     doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) {
       if (doc.frontier >= cm.display.showingFrom) { // Visible
         var oldStyles = line.styles;
         line.styles = highlightLine(cm, line, state);
         var ischange = !oldStyles || oldStyles.length != line.styles.length;
         for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
         if (ischange) {
           if (prevChange && prevChange.end == doc.frontier) prevChange.end++;
           else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1});
+        }
         line.stateAfter = copyState(doc.mode, state);
       } else {
         processLine(cm, line, 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 (changed.length)
       operation(cm, function() {
         for (var i = 0; i < changed.length; ++i)
           regChange(this, changed[i].start, changed[i].end);
       })();
+  }
   // 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) {
     var minindent, minline, doc = cm.doc;
     for (var search = n, lim = n - 100; search > lim; --search) {
       if (search <= doc.first) return doc.first;
       var line = getLine(doc, search - 1);
       if (line.stateAfter) 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) {
     var doc = cm.doc, display = cm.display;
       if (!doc.mode.startState) return true;
     var pos = findStartLine(cm, n), 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, state);
       var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo;
       line.stateAfter = save ? copyState(doc.mode, state) : null;
       ++pos;
     });
     return state;
+  }
   // POSITION MEASUREMENT
   function paddingTop(display) {return display.lineSpace.offsetTop;}
   function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
   function paddingLeft(display) {
     var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x"));
     return e.offsetLeft;
+  }
   function measureChar(cm, line, ch, data) {
     var dir = -1;
     data = data || measureLine(cm, line);
     for (var pos = ch;; pos += dir) {
       var r = data[pos];
       if (r) break;
       if (dir < 0 && pos == 0) dir = 1;
+    }
     return {left: pos < ch ? r.right : r.left,
             right: pos > ch ? r.left : r.right,
             top: r.top, bottom: r.bottom};
+  }
   function findCachedMeasurement(cm, line) {
     var cache = cm.display.measureLineCache;
     for (var i = 0; i < cache.length; ++i) {
       var memo = cache[i];
       if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
           cm.display.scroller.clientWidth == memo.width &&
           memo.classes == line.textClass + "|" + line.bgClass + "|" + line.wrapClass)
         return memo.measure;
+    }
+  }
   function measureLine(cm, line) {
     // First look in the cache
     var measure = findCachedMeasurement(cm, line);
     if (!measure) {
       // Failing that, recompute and store result in cache
       measure = measureLineInner(cm, line);
       var cache = cm.display.measureLineCache;
       var memo = {text: line.text, width: cm.display.scroller.clientWidth,
                   markedSpans: line.markedSpans, measure: measure,
                   classes: line.textClass + "|" + line.bgClass + "|" + line.wrapClass};
       if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo;
       else cache.push(memo);
+    }
     return measure;
+  }
   function measureLineInner(cm, line) {
     var display = cm.display, measure = emptyArray(line.text.length);
     var pre = lineContent(cm, line, measure);
     // IE does not cache element positions of inline elements between
     // calls to getBoundingClientRect. This makes the loop below,
     // which gathers the positions of all the characters on the line,
     // do an amount of layout work quadratic to the number of
     // characters. When line wrapping is off, we try to improve things
     // by first subdividing the line into a bunch of inline blocks, so
     // that IE can reuse most of the layout information from caches
     // for those blocks. This does interfere with line wrapping, so it
     // doesn't work when wrapping is on, but in that case the
     // situation is slightly better, since IE does cache line-wrapping
     // information and only recomputes per-line.
     if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) {
       var fragment = document.createDocumentFragment();
       var chunk = 10, n = pre.childNodes.length;
       for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) {
         var wrap = elt("div", null, null, "display: inline-block");
         for (var j = 0; j < chunk && n; ++j) {
           wrap.appendChild(pre.firstChild);
           --n;
+        }
         fragment.appendChild(wrap);
+      }
       pre.appendChild(fragment);
+    }
     removeChildrenAndAdd(display.measure, pre);
     var outer = getRect(display.lineDiv);
     var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
     // Work around an IE7/8 bug where it will sometimes have randomly
     // replaced our pre with a clone at this point.
     if (ie_lt9 && display.measure.first != pre)
       removeChildrenAndAdd(display.measure, pre);
     for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) {
       var size = getRect(cur);
       var top = Math.max(0, size.top - outer.top), bot = Math.min(size.bottom - outer.top, maxBot);
       for (var j = 0; j < vranges.length; j += 2) {
         var rtop = vranges[j], rbot = vranges[j+1];
         if (rtop > bot || rbot < top) continue;
         if (rtop <= top && rbot >= bot ||
             top <= rtop && bot >= rbot ||
             Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
           vranges[j] = Math.min(top, rtop);
           vranges[j+1] = Math.max(bot, rbot);
           break;
+        }
+      }
       if (j == vranges.length) vranges.push(top, bot);
       var right = size.right;
       if (cur.measureRight) right = getRect(cur.measureRight).left;
       data[i] = {left: size.left - outer.left, right: right - outer.left, top: j};
+    }
     for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) {
       var vr = cur.top;
       cur.top = vranges[vr]; cur.bottom = vranges[vr+1];
+    }
     return data;
+  }
   function measureLineWidth(cm, line) {
     var hasBadSpan = false;
     if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) {
       var sp = line.markedSpans[i];
       if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true;
+    }
     var cached = !hasBadSpan && findCachedMeasurement(cm, line);
     if (cached) return measureChar(cm, line, line.text.length, cached).right;
     var pre = lineContent(cm, line);
     var end = pre.appendChild(zeroWidthElement(cm.display.measure));
     removeChildrenAndAdd(cm.display.measure, pre);
     return getRect(end).right - getRect(cm.display.lineDiv).left;
+  }
   function clearCaches(cm) {
     cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0;
     cm.display.cachedCharWidth = cm.display.cachedTextHeight = null;
     if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
     cm.display.lineNumChars = null;
+  }
   // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), 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(cm, lineObj);
     if (context != "local") yOff -= cm.display.viewOffset;
     if (context == "page") {
       var lOff = getRect(cm.display.lineSpace);
       yOff += lOff.top + (window.pageYOffset || (document.documentElement || document.body).scrollTop);
       var xOff = lOff.left + (window.pageXOffset || (document.documentElement || document.body).scrollLeft);
       rect.left += xOff; rect.right += xOff;
+    }
     rect.top += yOff; rect.bottom += yOff;
     return rect;
+  }
   // Context may be "window", "page", "div", or "local"/null
   // Result is in "div" coords
   function fromCoordSystem(cm, coords, context) {
     if (context == "div") return coords;
     var left = coords.left, top = coords.top;
     if (context == "page") {
       left -= window.pageXOffset || (document.documentElement || document.body).scrollLeft;
       top -= window.pageYOffset || (document.documentElement || document.body).scrollTop;
+    }
     var lineSpaceBox = getRect(cm.display.lineSpace);
     left -= lineSpaceBox.left;
     top -= lineSpaceBox.top;
     if (context == "local" || !context) {
       var editorBox = getRect(cm.display.wrapper);
       left += editorBox.left;
       top += editorBox.top;
+    }
     return {left: left, top: top};
+  }
   function charCoords(cm, pos, context, lineObj) {
     if (!lineObj) lineObj = getLine(cm.doc, pos.line);
     return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch), context);
+  }
   function cursorCoords(cm, pos, context, lineObj, measurement) {
     lineObj = lineObj || getLine(cm.doc, pos.line);
     if (!measurement) measurement = measureLine(cm, lineObj);
     function get(ch, right) {
       var m = measureChar(cm, lineObj, ch, measurement);
       if (right) m.left = m.right; else m.right = m.left;
       return intoCoordSystem(cm, lineObj, m, context);
+    }
     var order = getOrder(lineObj), ch = pos.ch;
     if (!order) return get(ch);
     var main, other, linedir = order[0].level;
     for (var i = 0; i < order.length; ++i) {
       var part = order[i], rtl = part.level % 2, nb, here;
       if (part.from < ch && part.to > ch) return get(ch, rtl);
       var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to;
       if (left == ch) {
         // IE returns bogus offsets and widths for edges where the
         // direction flips, but only for the side with the lower
         // level. So we try to use the side with the higher level.
         if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true);
         else here = get(rtl && part.from != part.to ? ch - 1 : ch);
         if (rtl == linedir) main = here; else other = here;
       } else if (right == ch) {
         var nb = i < order.length - 1 && order[i+1];
         if (!rtl && nb && nb.from == nb.to) continue;
         if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from);
         else here = get(rtl ? ch : ch - 1, true);
         if (rtl == linedir) main = here; else other = here;
+      }
+    }
     if (linedir && !ch) other = get(order[0].to - 1);
     if (!main) return other;
     if (other) main.other = other;
     return main;
+  }
   function PosMaybeOutside(line, ch, outside) {
     var pos = new Pos(line, ch);
     if (outside) pos.outside = true;
     return pos;
+  }
   // Coords must be lineSpace-local
   function coordsChar(cm, x, y) {
     var doc = cm.doc;
     y += cm.display.viewOffset;
     if (y < 0) return PosMaybeOutside(doc.first, 0, true);
     var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
     if (lineNo > last)
       return PosMaybeOutside(doc.first + doc.size - 1, getLine(doc, last).text.length, true);
     if (x < 0) x = 0;
     for (;;) {
       var lineObj = getLine(doc, lineNo);
       var found = coordsCharInner(cm, lineObj, lineNo, x, y);
       var merged = collapsedSpanAtEnd(lineObj);
       var mergedPos = merged && merged.find();
       if (merged && found.ch >= mergedPos.from.ch)
         lineNo = mergedPos.to.line;
       else
         return found;
+    }
+  }
   function coordsCharInner(cm, lineObj, lineNo, x, y) {
     var innerOff = y - heightAtLine(cm, lineObj);
     var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
     var measurement = measureLine(cm, lineObj);
     function getX(ch) {
       var sp = cursorCoords(cm, Pos(lineNo, ch), "line",
                             lineObj, measurement);
       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 PosMaybeOutside(lineNo, to, toOutside);
     // Do a binary search between these bounds.
     for (;;) {
       if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
         var after = x - fromX < toX - x, ch = after ? from : to;
         while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch;
         var pos = PosMaybeOutside(lineNo, ch, after ? fromOutside : toOutside);
         pos.after = after;
         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;
   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;
+  }
   function charWidth(display) {
     if (display.cachedCharWidth != null) return display.cachedCharWidth;
     var anchor = elt("span", "x");
     var pre = elt("pre", [anchor]);
     removeChildrenAndAdd(display.measure, pre);
     var width = anchor.offsetWidth;
     if (width > 2) display.cachedCharWidth = width;
     return width || 10;
+  }
   // OPERATIONS
   // Operations are used to wrap changes in such a way that each
   // change won't have to update the cursor and display (which would
   // be awkward, slow, and error-prone), but instead updates are
   // batched and then all combined and executed at once.
   var nextOpId = 0;
   function startOperation(cm) {
     cm.curOp = {
       // An array of ranges of lines that have to be updated. See
       // updateDisplay.
       changes: [],
       updateInput: null,
       userSelChange: null,
       textChanged: null,
       selectionChanged: false,
       cursorActivity: false,
       updateMaxLine: false,
       updateScrollPos: false,
       id: ++nextOpId
     };
     if (!delayedCallbackDepth++) delayedCallbacks = [];
+  }
   function endOperation(cm) {
     var op = cm.curOp, doc = cm.doc, display = cm.display;
     cm.curOp = null;
     if (op.updateMaxLine) computeMaxLength(cm);
     if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) {
       var width = measureLineWidth(cm, display.maxLine);
       display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px";
       display.maxLineChanged = false;
       var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth);
       if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos)
         setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
+    }
     var newScrollPos, updated;
     if (op.updateScrollPos) {
       newScrollPos = op.updateScrollPos;
     } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible
       var coords = cursorCoords(cm, doc.sel.head);
       newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
+    }
     if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null) {
       updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop);
       if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
+    }
     if (!updated && op.selectionChanged) updateSelection(cm);
     if (op.updateScrollPos) {
       display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop;
       display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft;
       alignHorizontally(cm);
       if (op.scrollToPos)
         scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos), op.scrollToPosMargin);
     } else if (newScrollPos) {
       scrollCursorIntoView(cm);
+    }
     if (op.selectionChanged) restartBlink(cm);
     if (cm.state.focused && op.updateInput)
       resetInput(cm, op.userSelChange);
     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");
     var delayed;
     if (!--delayedCallbackDepth) {
       delayed = delayedCallbacks;
       delayedCallbacks = null;
+    }
     if (op.textChanged)
       signal(cm, "change", cm, op.textChanged);
     if (op.cursorActivity) signal(cm, "cursorActivity", cm);
     if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
+  }
   // Wraps a function in an operation. Returns the wrapped function.
   function operation(cm1, f) {
     return function() {
       var cm = cm1 || this, withOp = !cm.curOp;
       if (withOp) startOperation(cm);
       try { var result = f.apply(cm, arguments); }
       finally { if (withOp) endOperation(cm); }
       return result;
     };
+  }
   function docOperation(f) {
     return function() {
       var withOp = this.cm && !this.cm.curOp, result;
       if (withOp) startOperation(this.cm);
       try { result = f.apply(this, arguments); }
       finally { if (withOp) endOperation(this.cm); }
       return result;
     };
+  }
   function runInOp(cm, f) {
     var withOp = !cm.curOp, result;
     if (withOp) startOperation(cm);
     try { result = f(); }
     finally { if (withOp) endOperation(cm); }
     return result;
+  }
   function regChange(cm, from, to, lendiff) {
     if (from == null) from = cm.doc.first;
     if (to == null) to = cm.doc.first + cm.doc.size;
     cm.curOp.changes.push({from: from, to: to, diff: lendiff});
+  }
   // INPUT HANDLING
   function slowPoll(cm) {
     if (cm.display.pollingFast) return;
     cm.display.poll.set(cm.options.pollInterval, function() {
       readInput(cm);
       if (cm.state.focused) slowPoll(cm);
     });
+  }
   function fastPoll(cm) {
     var missed = false;
     cm.display.pollingFast = true;
     function p() {
       var changed = readInput(cm);
       if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
       else {cm.display.pollingFast = false; slowPoll(cm);}
+    }
     cm.display.poll.set(20, p);
+  }
   // prevInput is a hack to work with IME. If we reset the textarea
   // on every change, that breaks IME. So we look for changes
   // compared to the previous content instead. (Modern browsers have
   // events that indicate IME taking place, but these are not widely
   // supported or compatible enough yet to rely on.)
   function readInput(cm) {
     var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel;
     if (!cm.state.focused || hasSelection(input) || isReadOnly(cm)) return false;
     var text = input.value;
     if (text == prevInput && posEq(sel.from, sel.to)) return false;
     if (ie && !ie_lt9 && cm.display.inputHasSelection === text) {
       resetInput(cm, true);
       return false;
+    }
     var withOp = !cm.curOp;
     if (withOp) startOperation(cm);
     sel.shift = false;
     var same = 0, l = Math.min(prevInput.length, text.length);
     while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
     var from = sel.from, to = sel.to;
     if (same < prevInput.length)
       from = Pos(from.line, from.ch - (prevInput.length - same));
     else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming)
       to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same)));
     var updateInput = cm.curOp.updateInput;
     makeChange(cm.doc, {from: from, to: to, text: splitLines(text.slice(same)),
                         origin: cm.state.pasteIncoming ? "paste" : "+input"}, "end");
     cm.curOp.updateInput = updateInput;
     if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = "";
     else cm.display.prevInput = text;
     if (withOp) endOperation(cm);
     cm.state.pasteIncoming = false;
     return true;
+  }
   function resetInput(cm, user) {
     var minimal, selected, doc = cm.doc;
     if (!posEq(doc.sel.from, doc.sel.to)) {
       cm.display.prevInput = "";
       minimal = hasCopyEvent &&
         (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
       var content = minimal ? "-" : selected || cm.getSelection();
       cm.display.input.value = content;
       if (cm.state.focused) selectInput(cm.display.input);
       if (ie && !ie_lt9) cm.display.inputHasSelection = content;
     } else if (user) {
       cm.display.prevInput = cm.display.input.value = "";
       if (ie && !ie_lt9) cm.display.inputHasSelection = null;
+    }
     cm.display.inaccurateSelection = minimal;
+  }
   function focusInput(cm) {
     if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input))
       cm.display.input.focus();
+  }
   function isReadOnly(cm) {
     return cm.options.readOnly || cm.doc.cantEdit;
+  }
   // EVENT HANDLERS
   function registerEventHandlers(cm) {
     var d = cm.display;
     on(d.scroller, "mousedown", operation(cm, onMouseDown));
     if (ie)
       on(d.scroller, "dblclick", operation(cm, function(e) {
         var pos = posFromMouse(cm, e);
         if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
         e_preventDefault(e);
         var word = findWordAt(getLine(cm.doc, pos.line).text, pos);
         extendSelection(cm.doc, word.from, word.to);
       }));
     else
       on(d.scroller, "dblclick", e_preventDefault);
     on(d.lineSpace, "selectstart", function(e) {
       if (!eventInWidget(d, e)) e_preventDefault(e);
     });
     // Gecko browsers fire contextmenu *after* opening the menu, at
     // which point we can't mess with it anymore. Context menu is
     // handled in onMouseDown for Gecko.
     if (!gecko) connect(scroller, "contextmenu", onContextMenu);
     connect(scroller, "scroll", onScrollMain);
     connect(scrollbar, "scroll", onScrollBar);
     connect(scrollbar, "mousedown", function() {if (focused) setTimeout(focusInput, 0);});
     var resizeHandler = connect(window, "resize", function() {
       if (wrapper.parentNode) updateDisplay(true);
       else resizeHandler();
     }, true);
     connect(input, "keyup", operation(onKeyUp));
     connect(input, "input", fastPoll);
     connect(input, "keydown", operation(onKeyDown));
     connect(input, "keypress", operation(onKeyPress));
     connect(input, "focus", onFocus);
     connect(input, "blur", onBlur);
     if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
     on(d.scroller, "scroll", function() {
       if (d.scroller.clientHeight) {
         setScrollTop(cm, d.scroller.scrollTop);
         setScrollLeft(cm, d.scroller.scrollLeft, true);
         signal(cm, "scroll", cm);
+      }
     });
     on(d.scrollbarV, "scroll", function() {
       if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop);
     });
     on(d.scrollbarH, "scroll", function() {
       if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
     });
     on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
     on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
     function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
     on(d.scrollbarH, "mousedown", reFocus);
     on(d.scrollbarV, "mousedown", reFocus);
     // Prevent wrapper from ever scrolling
     on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
     function onResize() {
       // Might be a text scaling operation, clear size caches.
       d.cachedCharWidth = d.cachedTextHeight = null;
       clearCaches(cm);
       runInOp(cm, bind(regChange, cm));
+    }
     on(window, "resize", onResize);
     // Above handler holds on to the editor and its data structures.
     // Here we poll to unregister it when the editor is no longer in
     // the document, so that it can be garbage-collected.
     function unregister() {
       for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {}
       if (p) setTimeout(unregister, 5000);
       else off(window, "resize", onResize);
+    }
     setTimeout(unregister, 5000);
     on(d.input, "keyup", operation(cm, function(e) {
       if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
       if (e.keyCode == 16) cm.doc.sel.shift = false;
     }));
     on(d.input, "input", bind(fastPoll, cm));
     on(d.input, "keydown", operation(cm, onKeyDown));
     on(d.input, "keypress", operation(cm, onKeyPress));
     on(d.input, "focus", bind(onFocus, cm));
     on(d.input, "blur", bind(onBlur, cm));
     function drag_(e) {
-      if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+      if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
       e_stop(e);
+    }
     if (options.dragDrop) {
       connect(scroller, "dragstart", onDragStart);
       connect(scroller, "dragenter", drag_);
       connect(scroller, "dragover", drag_);
       connect(scroller, "drop", operation(onDrop));
+    }
     connect(scroller, "paste", function(){focusInput(); fastPoll();});
     connect(input, "paste", function(){pasteIncoming = true; fastPoll();});
     connect(input, "cut", operation(function(){
       if (!options.readOnly) replaceSelection("");
     }));
     if (cm.options.dragDrop) {
       on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
       on(d.scroller, "dragenter", drag_);
       on(d.scroller, "dragover", drag_);
       on(d.scroller, "drop", operation(cm, onDrop));
+    }
     on(d.scroller, "paste", function(e){
       if (eventInWidget(d, e)) return;
       focusInput(cm);
       fastPoll(cm);
     });
     on(d.input, "paste", function() {
       cm.state.pasteIncoming = true;
       fastPoll(cm);
     });
     function prepareCopy() {
       if (d.inaccurateSelection) {
         d.prevInput = "";
         d.inaccurateSelection = false;
         d.input.value = cm.getSelection();
         selectInput(d.input);
+      }
+    }
     on(d.input, "cut", prepareCopy);
     on(d.input, "copy", prepareCopy);
     // Needed to handle Tab key in KHTML
     if (khtml) connect(sizer, "mouseup", function() {
         if (document.activeElement == input) input.blur();
         focusInput();
     if (khtml) on(d.sizer, "mouseup", function() {
         if (document.activeElement == d.input) d.input.blur();
         focusInput(cm);
     });
     // IE throws unspecified error in certain cases, when
     // trying to access activeElement before onload
     var hasFocus; try { hasFocus = (document.activeElement == input); } catch(e) { }
     if (hasFocus || options.autofocus) setTimeout(onFocus, 20);
     else onBlur();
     function isLine(l) {return l >= 0 && l < doc.size;}
     // The instance object that we'll return. Mostly calls out to
     // local functions in the CodeMirror function. Some do some extra
     // range checking and/or clipping. operation is used to wrap the
     // call so that changes it makes are tracked, and the display is
     // updated afterwards.
     var instance = wrapper.CodeMirror = {
       getValue: getValue,
       setValue: operation(setValue),
       getSelection: getSelection,
       replaceSelection: operation(replaceSelection),
       focus: function(){window.focus(); focusInput(); onFocus(); fastPoll();},
       setOption: function(option, value) {
         var oldVal = options[option];
         options[option] = value;
         if (option == "mode" || option == "indentUnit") loadMode();
         else if (option == "readOnly" && value == "nocursor") {onBlur(); input.blur();}
         else if (option == "readOnly" && !value) {resetInput(true);}
         else if (option == "theme") themeChanged();
         else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)();
         else if (option == "tabSize") updateDisplay(true);
         else if (option == "keyMap") keyMapChanged();
         else if (option == "tabindex") input.tabIndex = value;
         if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" ||
             option == "theme" || option == "lineNumberFormatter") {
           gutterChanged();
           updateDisplay(true);
+        }
       },
       getOption: function(option) {return options[option];},
       getMode: function() {return mode;},
       undo: operation(undo),
       redo: operation(redo),
       indentLine: operation(function(n, dir) {
         if (typeof dir != "string") {
           if (dir == null) dir = options.smartIndent ? "smart" : "prev";
           else dir = dir ? "add" : "subtract";
+        }
         if (isLine(n)) indentLine(n, dir);
       }),
       indentSelection: operation(indentSelected),
       historySize: function() {return {undo: history.done.length, redo: history.undone.length};},
       clearHistory: function() {history = new History();},
       setHistory: function(histData) {
         history = new History();
         history.done = histData.done;
         history.undone = histData.undone;
       },
       getHistory: function() {
         function cp(arr) {
           for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {
             nw.push(nwelt = []);
             for (var j = 0, elt = arr[i]; j < elt.length; ++j) {
               var old = [], cur = elt[j];
               nwelt.push({start: cur.start, added: cur.added, old: old});
               for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));
+            }
+          }
           return nw;
+        }
         return {done: cp(history.done), undone: cp(history.undone)};
       },
       matchBrackets: operation(function(){matchBrackets(true);}),
       getTokenAt: operation(function(pos) {
         pos = clipPos(pos);
         return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), options.tabSize, pos.ch);
       }),
       getStateAfter: function(line) {
         line = clipLine(line == null ? doc.size - 1: line);
         return getStateBefore(line + 1);
       },
       cursorCoords: function(start, mode) {
         if (start == null) start = sel.inverted;
         return this.charCoords(start ? sel.from : sel.to, mode);
       },
       charCoords: function(pos, mode) {
         pos = clipPos(pos);
         if (mode == "local") return localCoords(pos, false);
         if (mode == "div") return localCoords(pos, true);
         return pageCoords(pos);
       },
       coordsChar: function(coords) {
         var off = eltOffset(lineSpace);
         return coordsChar(coords.x - off.left, coords.y - off.top);
       },
       defaultTextHeight: function() { return textHeight(); },
       markText: operation(markText),
       setBookmark: setBookmark,
       findMarksAt: findMarksAt,
       setMarker: operation(addGutterMarker),
       clearMarker: operation(removeGutterMarker),
       setLineClass: operation(setLineClass),
       hideLine: operation(function(h) {return setLineHidden(h, true);}),
       showLine: operation(function(h) {return setLineHidden(h, false);}),
       onDeleteLine: function(line, f) {
         if (typeof line == "number") {
           if (!isLine(line)) return null;
           line = getLine(line);
+        }
         (line.handlers || (line.handlers = [])).push(f);
         return line;
       },
       lineInfo: lineInfo,
       getViewport: function() { return {from: showingFrom, to: showingTo};},
       addWidget: function(pos, node, scroll, vert, horiz) {
         pos = localCoords(clipPos(pos));
         var top = pos.yBot, left = pos.x;
         node.style.position = "absolute";
         sizer.appendChild(node);
         if (vert == "over") top = pos.y;
         else if (vert == "near") {
           var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()),
               hspace = Math.max(sizer.clientWidth, lineSpace.clientWidth) - paddingLeft();
           if (pos.yBot + node.offsetHeight > vspace && pos.y > node.offsetHeight)
             top = pos.y - node.offsetHeight;
           if (left + node.offsetWidth > hspace)
             left = hspace - node.offsetWidth;
+        }
         node.style.top = (top + paddingTop()) + "px";
         node.style.left = node.style.right = "";
         if (horiz == "right") {
           left = sizer.clientWidth - node.offsetWidth;
           node.style.right = "0px";
         } else {
           if (horiz == "left") left = 0;
           else if (horiz == "middle") left = (sizer.clientWidth - node.offsetWidth) / 2;
           node.style.left = (left + paddingLeft()) + "px";
+  }
   function eventInWidget(display, e) {
     for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
       if (!n) return true;
       if (/\bCodeMirror-(?:line)?widget\b/.test(n.className) ||
           n.parentNode == display.sizer && n != display.mover) return true;
+    }
+  }
   function posFromMouse(cm, e, liberal) {
     var display = cm.display;
     if (!liberal) {
       var target = e_target(e);
       if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
           target == display.scrollbarV || target == display.scrollbarV.firstChild ||
           target == display.scrollbarFiller) return null;
+    }
     var x, y, space = getRect(display.lineSpace);
     // Fails unpredictably on IE[67] when mouse is dragged around quickly.
     try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
     return coordsChar(cm, x - space.left, y - space.top);
+  }
   var lastClick, lastDoubleClick;
   function onMouseDown(e) {
     var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel;
     sel.shift = e.shiftKey;
     if (eventInWidget(display, e)) {
       if (!webkit) {
         display.scroller.draggable = false;
         setTimeout(function(){display.scroller.draggable = true;}, 100);
+      }
       return;
+    }
     if (clickInGutter(cm, e)) return;
     var start = posFromMouse(cm, e);
     switch (e_button(e)) {
     case 3:
       if (captureMiddleClick) onContextMenu.call(cm, cm, e);
       return;
     case 2:
       if (start) extendSelection(cm.doc, start);
       setTimeout(bind(focusInput, cm), 20);
       e_preventDefault(e);
       return;
+    }
     // For button 1, if it was clicked inside the editor
     // (posFromMouse returning non-null), we have to adjust the
     // selection.
     if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}
     if (!cm.state.focused) onFocus(cm);
     var now = +new Date, type = "single";
     if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
       type = "triple";
       e_preventDefault(e);
       setTimeout(bind(focusInput, cm), 20);
       selectLine(cm, start.line);
     } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
       type = "double";
       lastDoubleClick = {time: now, pos: start};
       e_preventDefault(e);
       var word = findWordAt(getLine(doc, start.line).text, start);
       extendSelection(cm.doc, word.from, word.to);
     } else { lastClick = {time: now, pos: start}; }
     var last = start;
     if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
         !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
       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);
           extendSelection(cm.doc, start);
           focusInput(cm);
+        }
         if (scroll)
           scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight);
       },
       lineCount: function() {return doc.size;},
       clipPos: clipPos,
       getCursor: function(start) {
         if (start == null) start = sel.inverted;
         return copyPos(start ? sel.from : sel.to);
       },
       somethingSelected: function() {return !posEq(sel.from, sel.to);},
       setCursor: operation(function(line, ch, user) {
         if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch, user);
         else setCursor(line, ch, user);
       }),
       setSelection: operation(function(from, to, user) {
         (user ? setSelectionUser : setSelection)(clipPos(from), clipPos(to || from));
       }),
       getLine: function(line) {if (isLine(line)) return getLine(line).text;},
       getLineHandle: function(line) {if (isLine(line)) return getLine(line);},
       setLine: operation(function(line, text) {
         if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: getLine(line).text.length});
       }),
       removeLine: operation(function(line) {
         if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0}));
       }),
       replaceRange: operation(replaceRange),
       getRange: function(from, to, lineSep) {return getRange(clipPos(from), clipPos(to), lineSep);},
       triggerOnKeyDown: operation(onKeyDown),
       execCommand: function(cmd) {return commands[cmd](instance);},
       // Stuff used by commands, probably not much use to outside code.
       moveH: operation(moveH),
       deleteH: operation(deleteH),
       moveV: operation(moveV),
       toggleOverwrite: function() {
         if(overwrite){
           overwrite = false;
           cursor.className = cursor.className.replace(" CodeMirror-overwrite", "");
         } else {
           overwrite = true;
           cursor.className += " CodeMirror-overwrite";
+        }
       },
       posFromIndex: function(off) {
         var lineNo = 0, ch;
         doc.iter(0, doc.size, function(line) {
           var sz = line.text.length + 1;
           if (sz > off) { ch = off; return true; }
           off -= sz;
           ++lineNo;
         });
         return clipPos({line: lineNo, ch: ch});
       },
       indexFromPos: function (coords) {
         if (coords.line < 0 || coords.ch < 0) return 0;
         var index = coords.ch;
         doc.iter(0, coords.line, function (line) {
           index += line.text.length + 1;
         });
         return index;
       },
       scrollTo: function(x, y) {
         if (x != null) scroller.scrollLeft = x;
         if (y != null) scrollbar.scrollTop = scroller.scrollTop = y;
         updateDisplay([]);
       },
       getScrollInfo: function() {
         return {x: scroller.scrollLeft, y: scrollbar.scrollTop,
                 height: scrollbar.scrollHeight, width: scroller.scrollWidth};
       },
       scrollIntoView: function(pos) {
         var coords = localCoords(pos ? clipPos(pos) : sel.inverted ? sel.from : sel.to);
         scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
       },
       setSize: function(width, height) {
         function interpret(val) {
           val = String(val);
           return /^\d+$/.test(val) ? val + "px" : val;
+        }
         if (width != null) wrapper.style.width = interpret(width);
         if (height != null) scroller.style.height = interpret(height);
         instance.refresh();
       },
       operation: function(f){return operation(f)();},
       compoundChange: function(f){return compoundChange(f);},
       refresh: function(){
         updateDisplay(true, null, lastScrollTop);
         if (scrollbar.scrollHeight > lastScrollTop)
           scrollbar.scrollTop = lastScrollTop;
       },
       getInputField: function(){return input;},
       getWrapperElement: function(){return wrapper;},
       getScrollerElement: function(){return scroller;},
       getGutterElement: function(){return gutter;}
     };
     function getLine(n) { return getLineAt(doc, n); }
     function updateLineHeight(line, height) {
       gutterDirty = true;
       var diff = height - line.height;
       for (var n = line; n; n = n.parent) n.height += diff;
+    }
     function lineContent(line, wrapAt) {
       if (!line.styles)
         line.highlight(mode, line.stateAfter = getStateBefore(lineNo(line)), options.tabSize);
       return line.getContent(options.tabSize, wrapAt, options.lineWrapping);
+    }
     function setValue(code) {
       var top = {line: 0, ch: 0};
       updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length},
                   splitLines(code), top, top);
       updateInput = true;
+    }
     function getValue(lineSep) {
       var text = [];
       doc.iter(0, doc.size, function(line) { text.push(line.text); });
       return text.join(lineSep || "\n");
+    }
     function onScrollBar(e) {
       if (Math.abs(scrollbar.scrollTop - lastScrollTop) > 1) {
         lastScrollTop = scroller.scrollTop = scrollbar.scrollTop;
         updateDisplay([]);
       });
       // 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);
       return;
+    }
     e_preventDefault(e);
     if (type == "single") extendSelection(cm.doc, clipPos(doc, start));
     var startstart = sel.from, startend = sel.to, lastPos = start;
     function doSelect(cur) {
       if (posEq(lastPos, cur)) return;
       lastPos = cur;
       if (type == "single") {
         extendSelection(cm.doc, clipPos(doc, start), cur);
         return;
+      }
       startstart = clipPos(doc, startstart);
       startend = clipPos(doc, startend);
       if (type == "double") {
         var word = findWordAt(getLine(doc, cur.line).text, cur);
         if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend);
         else extendSelection(cm.doc, startstart, word.to);
       } else if (type == "triple") {
         if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0)));
         else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0)));
+      }
+    }
     function onScrollMain(e) {
       if (options.fixedGutter && gutter.style.left != scroller.scrollLeft + "px")
         gutter.style.left = scroller.scrollLeft + "px";
       if (Math.abs(scroller.scrollTop - lastScrollTop) > 1) {
         lastScrollTop = scroller.scrollTop;
         if (scrollbar.scrollTop != lastScrollTop)
           scrollbar.scrollTop = lastScrollTop;
         updateDisplay([]);
     var editorSize = getRect(display.wrapper);
     // 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);
       if (!cur) return;
       if (!posEq(cur, last)) {
         if (!cm.state.focused) onFocus(cm);
         last = cur;
         doSelect(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);
+      }
       if (options.onScroll) options.onScroll(instance);
+    }
     function onMouseDown(e) {
       setShift(e_prop(e, "shiftKey"));
       // Check whether this is a click in a widget
       for (var n = e_target(e); n != wrapper; n = n.parentNode)
         if (n.parentNode == sizer && n != mover) return;
       // See if this is a click in the gutter
       for (var n = e_target(e); n != wrapper; n = n.parentNode)
         if (n.parentNode == gutterText) {
           if (options.onGutterClick)
             options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom, e);
           return e_preventDefault(e);
+        }
       var start = posFromMouse(e);
       switch (e_button(e)) {
       case 3:
         if (gecko) onContextMenu(e);
         return;
       case 2:
         if (start) setCursor(start.line, start.ch, true);
         setTimeout(focusInput, 20);
         e_preventDefault(e);
+    }
     function done(e) {
       counter = Infinity;
       var cur = posFromMouse(cm, e);
       if (cur) doSelect(cur);
       e_preventDefault(e);
       focusInput(cm);
       off(document, "mousemove", move);
       off(document, "mouseup", up);
+    }
     var move = operation(cm, function(e) {
       if (!ie && !e_button(e)) done(e);
       else extend(e);
     });
     var up = operation(cm, done);
     on(document, "mousemove", move);
     on(document, "mouseup", up);
+  }
   function onDrop(e) {
     var cm = this;
     if (eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))))
       return;
     e_preventDefault(e);
     var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
     if (!pos || isReadOnly(cm)) return;
     if (files && files.length && window.FileReader && window.File) {
       var n = files.length, text = Array(n), read = 0;
       var loadFile = function(file, i) {
         var reader = new FileReader;
         reader.onload = function() {
           text[i] = reader.result;
           if (++read == n) {
             pos = clipPos(cm.doc, pos);
             makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around");
+          }
         };
         reader.readAsText(file);
       };
       for (var i = 0; i < n; ++i) loadFile(files[i], i);
     } else {
       // Don't do a replace if the drop happened inside of the selected text.
       if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) {
         cm.state.draggingText(e);
         // Ensure the editor is re-focused
         setTimeout(bind(focusInput, cm), 20);
         return;
+      }
       // For button 1, if it was clicked inside the editor
       // (posFromMouse returning non-null), we have to adjust the
       // selection.
       if (!start) {if (e_target(e) == scroller) e_preventDefault(e); return;}
       if (!focused) onFocus();
       var now = +new Date, type = "single";
       if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
         type = "triple";
         e_preventDefault(e);
         setTimeout(focusInput, 20);
         selectLine(start.line);
       } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
         type = "double";
         lastDoubleClick = {time: now, pos: start};
         e_preventDefault(e);
         var word = findWordAt(start);
         setSelectionUser(word.from, word.to);
       } else { lastClick = {time: now, pos: start}; }
       function dragEnd(e2) {
         if (webkit) scroller.draggable = false;
         draggingText = false;
         up(); drop();
         if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
           e_preventDefault(e2);
           setCursor(start.line, start.ch, true);
           focusInput();
       try {
         var text = e.dataTransfer.getData("Text");
         if (text) {
           var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to;
           setSelection(cm.doc, pos, pos);
           if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste");
           cm.replaceSelection(text, null, "paste");
           focusInput(cm);
           onFocus(cm);
+        }
+      }
       var last = start, going;
       if (options.dragDrop && dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) &&
           !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
         // Let the drag handler handle this.
         if (webkit) scroller.draggable = true;
         var up = connect(document, "mouseup", operation(dragEnd), true);
         var drop = connect(scroller, "drop", operation(dragEnd), true);
         draggingText = true;
         // IE's approach to draggable
         if (scroller.dragDrop) scroller.dragDrop();
         return;
       catch(e){}
+    }
+  }
   function clickInGutter(cm, e) {
     var display = cm.display;
     try { var mX = e.clientX, mY = e.clientY; }
     catch(e) { return false; }
     if (mX >= Math.floor(getRect(display.gutters).right)) return false;
     e_preventDefault(e);
     if (!hasHandler(cm, "gutterClick")) return true;
     var lineBox = getRect(display.lineDiv);
     if (mY > lineBox.bottom) return true;
     mY -= lineBox.top - display.viewOffset;
     for (var i = 0; i < cm.options.gutters.length; ++i) {
       var g = display.gutters.childNodes[i];
       if (g && getRect(g).right >= mX) {
         var line = lineAtHeight(cm.doc, mY);
         var gutter = cm.options.gutters[i];
         signalLater(cm, "gutterClick", cm, line, gutter, e);
         break;
+      }
+    }
     return true;
+  }
   function onDragStart(cm, e) {
     if (ie && !cm.state.draggingText) { e_stop(e); return; }
     if (eventInWidget(cm.display, e)) return;
     var txt = cm.getSelection();
     e.dataTransfer.setData("Text", txt);
     // 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) {
       var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
       if (opera) {
         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;
+      }
       if (safari) {
         if (cm.display.dragImg) {
           img = cm.display.dragImg;
         } else {
           cm.display.dragImg = img;
           img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
           cm.display.wrapper.appendChild(img);
+        }
+      }
       e_preventDefault(e);
       if (type == "single") setCursor(start.line, start.ch, true);
       var startstart = sel.from, startend = sel.to;
       function doSelect(cur) {
         if (type == "single") {
           setSelectionUser(start, cur);
         } else if (type == "double") {
           var word = findWordAt(cur);
           if (posLess(cur, startstart)) setSelectionUser(word.from, startend);
           else setSelectionUser(startstart, word.to);
         } else if (type == "triple") {
           if (posLess(cur, startstart)) setSelectionUser(startend, clipPos({line: cur.line, ch: 0}));
           else setSelectionUser(startstart, clipPos({line: cur.line + 1, ch: 0}));
       e.dataTransfer.setDragImage(img, 0, 0);
       if (opera) img.parentNode.removeChild(img);
+    }
+  }
   function setScrollTop(cm, val) {
     if (Math.abs(cm.doc.scrollTop - val) < 2) return;
     cm.doc.scrollTop = val;
     if (!gecko) updateDisplay(cm, [], val);
     if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
     if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
     if (gecko) updateDisplay(cm, []);
+  }
   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;
     if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = 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;
   function onScrollWheel(cm, 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;
     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) {
       for (var cur = e.target; cur != scroll; cur = cur.parentNode) {
         if (cur.lineObj) {
           cm.display.currentWheelTarget = cur;
           break;
+        }
+      }
       function extend(e) {
         var cur = posFromMouse(e, true);
         if (cur && !posEq(cur, last)) {
           if (!focused) onFocus();
           last = cur;
           doSelect(cur);
           updateInput = false;
           var visible = visibleLines();
           if (cur.line >= visible.to || cur.line < visible.from)
             going = setTimeout(operation(function(){extend(e);}), 150);
+    }
     // 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 && !opera && 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;
+    }
     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);
       updateDisplay(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;
+      }
+    }
+  }
   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
     if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
     var doc = cm.doc, prevShift = doc.sel.shift, done = false;
     try {
       if (isReadOnly(cm)) cm.state.suppressEdits = true;
       if (dropShift) doc.sel.shift = false;
       done = bound(cm) != Pass;
     } finally {
       doc.sel.shift = prevShift;
       cm.state.suppressEdits = false;
+    }
     return done;
+  }
   function allKeyMaps(cm) {
     var maps = cm.state.keyMaps.slice(0);
     if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
     maps.push(cm.options.keyMap);
     return maps;
+  }
   var maybeTransition;
   function handleKeyBinding(cm, e) {
     // Handle auto keymap transitions
     var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
     clearTimeout(maybeTransition);
     if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
       if (getKeyMap(cm.options.keyMap) == startMap)
         cm.options.keyMap = (next.call ? next.call(null, cm) : next);
     }, 50);
     var name = keyName(e, true), handled = false;
     if (!name) return false;
     var keymaps = allKeyMaps(cm);
     if (e.shiftKey) {
       // 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-'.
       handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);})
              || lookupKey(name, keymaps, function(b) {
                   if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(cm, b);
                 });
     } else {
       handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); });
+    }
     if (handled == "stop") handled = false;
     if (handled) {
       e_preventDefault(e);
       restartBlink(cm);
       if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
+    }
     return handled;
+  }
   function handleCharBinding(cm, e, ch) {
     var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
                             function(b) { return doHandleBinding(cm, b, true); });
     if (handled) {
       e_preventDefault(e);
       restartBlink(cm);
+    }
     return handled;
+  }
   var lastStoppedKey = null;
   function onKeyDown(e) {
     var cm = this;
     if (!cm.state.focused) onFocus(cm);
     if (ie && e.keyCode == 27) { e.returnValue = false; }
     if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
     var code = e.keyCode;
     // IE does strange things with escape.
     cm.doc.sel.shift = code == 16 || e.shiftKey;
     // First give onKeyEvent option a chance to handle this.
     var handled = handleKeyBinding(cm, e);
     if (opera) {
       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("");
+    }
+  }
   function onKeyPress(e) {
     var cm = this;
     if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
     var keyCode = e.keyCode, charCode = e.charCode;
     if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
     if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
     var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
     if (this.options.electricChars && this.doc.mode.electricChars &&
         this.options.smartIndent && !isReadOnly(this) &&
         this.doc.mode.electricChars.indexOf(ch) > -1)
       setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75);
     if (handleCharBinding(cm, e, ch)) return;
     if (ie && !ie_lt9) cm.display.inputHasSelection = null;
     fastPoll(cm);
+  }
   function onFocus(cm) {
     if (cm.options.readOnly == "nocursor") return;
     if (!cm.state.focused) {
       signal(cm, "focus", cm);
       cm.state.focused = true;
       if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
         cm.display.wrapper.className += " CodeMirror-focused";
       resetInput(cm, true);
+    }
     slowPoll(cm);
     restartBlink(cm);
+  }
   function onBlur(cm) {
     if (cm.state.focused) {
       signal(cm, "blur", cm);
       cm.state.focused = false;
       cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", "");
+    }
     clearInterval(cm.display.blinker);
     setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150);
+  }
   var detectingSelectAll;
   function onContextMenu(cm, e) {
     var display = cm.display, sel = cm.doc.sel;
     if (eventInWidget(display, e)) return;
     var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
     if (!pos || opera) return; // Opera is difficult.
     if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
       operation(cm, setSelection)(cm.doc, pos, pos);
     var oldCSS = display.input.style.cssText;
     display.inputDiv.style.position = "absolute";
     display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
       "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" +
       "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);";
     focusInput(cm);
     resetInput(cm, true);
     // Adds "Select all" to context menu in FF
     if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";
     function rehide() {
       display.inputDiv.style.position = "relative";
       display.input.style.cssText = oldCSS;
       if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
       slowPoll(cm);
       // Try to detect the user choosing select-all
       if (display.input.selectionStart != null && (!ie || ie_lt9)) {
         clearTimeout(detectingSelectAll);
         var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value), i = 0;
         display.prevInput = " ";
         display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
         var poll = function(){
           if (display.prevInput == " " && display.input.selectionStart == 0)
             operation(cm, commands.selectAll)(cm);
           else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
           else resetInput(cm);
         };
         detectingSelectAll = setTimeout(poll, 200);
+      }
+    }
     if (captureMiddleClick) {
       e_stop(e);
       var mouseup = function() {
         off(window, "mouseup", mouseup);
         setTimeout(rehide, 20);
       };
       on(window, "mouseup", mouseup);
     } else {
       setTimeout(rehide, 50);
+    }
+  }
   // UPDATING
   function changeEnd(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));
+  }
   // Make sure a position will be valid after the given change.
   function clipPostChange(doc, change, pos) {
     if (!posLess(change.from, pos)) return clipPos(doc, pos);
     var diff = (change.text.length - 1) - (change.to.line - change.from.line);
     if (pos.line > change.to.line + diff) {
       var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1;
       if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length);
       return clipToLen(pos, getLine(doc, preLine).text.length);
+    }
     if (pos.line == change.to.line + diff)
       return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) +
                        getLine(doc, change.to.line).text.length - change.to.ch);
     var inside = pos.line - change.from.line;
     return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch));
+  }
   // Hint can be null|"end"|"start"|"around"|{anchor,head}
   function computeSelAfterChange(doc, change, hint) {
     if (hint && typeof hint == "object") // Assumed to be {anchor, head} object
       return {anchor: clipPostChange(doc, change, hint.anchor),
               head: clipPostChange(doc, change, hint.head)};
     if (hint == "start") return {anchor: change.from, head: change.from};
     var end = changeEnd(change);
     if (hint == "around") return {anchor: change.from, head: end};
     if (hint == "end") return {anchor: end, head: end};
     // hint is null, leave the selection alone as much as possible
     var adjustPos = function(pos) {
       if (posLess(pos, change.from)) return pos;
       if (!posLess(change.to, pos)) return end;
       var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
       if (pos.line == change.to.line) ch += end.ch - change.to.ch;
       return Pos(line, ch);
     };
     return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)};
+  }
   function filterChange(doc, change) {
     var obj = {
       canceled: false,
       from: change.from,
       to: change.to,
       text: change.text,
       origin: change.origin,
       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;
       },
       cancel: function() { this.canceled = true; }
     };
     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};
+  }
   // Replace the range from from to to by the strings in replacement.
   // change is a {from, to, text [, origin]} object
   function makeChange(doc, change, selUpdate, ignoreReadOnly) {
     if (doc.cm) {
       if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly);
       if (doc.cm.state.suppressEdits) return;
+    }
     if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
       change = filterChange(doc, change);
       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 >= 1; --i)
         makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]});
       if (split.length)
         makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate);
     } else {
       makeChangeNoReadonly(doc, change, selUpdate);
+    }
+  }
   function makeChangeNoReadonly(doc, change, selUpdate) {
     var selAfter = computeSelAfterChange(doc, change, selUpdate);
     addToHistory(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));
     });
+  }
   function makeChangeFromHistory(doc, type) {
     if (doc.cm && doc.cm.state.suppressEdits) return;
     var hist = doc.history;
     var event = (type == "undo" ? hist.done : hist.undone).pop();
     if (!event) return;
     hist.dirtyCounter += type == "undo" ? -1 : 1;
     var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter,
                 anchorAfter: event.anchorBefore, headAfter: event.headBefore};
     (type == "undo" ? hist.undone : hist.done).push(anti);
     for (var i = event.changes.length - 1; i >= 0; --i) {
       var change = event.changes[i];
       change.origin = type;
       anti.changes.push(historyChangeFromChange(doc, change));
       var after = i ? computeSelAfterChange(doc, change, null)
                     : {anchor: event.anchorBefore, head: event.headBefore};
       makeChangeSingleDoc(doc, change, after, mergeOldSpans(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, mergeOldSpans(doc, change));
       });
+    }
+  }
   function shiftDoc(doc, distance) {
     function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);}
     doc.first += distance;
     if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance);
     doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor);
     doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to);
+  }
   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, null);
     if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter);
     else updateDoc(doc, change, spans, selAfter);
+  }
   function makeChangeSingleDocInEditor(cm, change, spans, selAfter) {
     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(doc, getLine(doc, from.line)));
       doc.iter(checkWidthStart, to.line + 1, function(line) {
         if (line == display.maxLine) {
           recomputeMaxLength = true;
           return true;
+        }
       });
+    }
     if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head))
       cm.curOp.cursorActivity = true;
     updateDoc(doc, change, spans, selAfter, estimateHeight(cm));
     if (!cm.options.lineWrapping) {
       doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
         var len = lineLength(doc, 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
     regChange(cm, from.line, to.line + 1, lendiff);
     if (hasHandler(cm, "change")) {
       var changeObj = {from: from, to: to,
                        text: change.text,
                        removed: change.removed,
                        origin: change.origin};
       if (cm.curOp.textChanged) {
         for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
         cur.next = changeObj;
       } else cm.curOp.textChanged = changeObj;
+    }
+  }
   function replaceRange(doc, code, from, to, origin) {
     if (!to) to = from;
     if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
     if (typeof code == "string") code = splitLines(code);
     makeChange(doc, {from: from, to: to, text: code, origin: origin}, null);
+  }
   // POSITION OBJECT
   function Pos(line, ch) {
     if (!(this instanceof Pos)) return new Pos(line, ch);
     this.line = line; this.ch = ch;
+  }
   CodeMirror.Pos = Pos;
   function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
   function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
   function copyPos(x) {return Pos(x.line, x.ch);}
   // SELECTION
   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;}
   // If shift is held, this will move the selection anchor. Otherwise,
   // it'll set the whole selection.
   function extendSelection(doc, pos, other, bias) {
     if (doc.sel.shift || doc.sel.extend) {
       var anchor = doc.sel.anchor;
       if (other) {
         var posBefore = posLess(pos, anchor);
         if (posBefore != posLess(other, anchor)) {
           anchor = pos;
           pos = other;
         } else if (posBefore != posLess(pos, other)) {
           pos = other;
+        }
+      }
       function done(e) {
         clearTimeout(going);
         var cur = posFromMouse(e);
         if (cur) doSelect(cur);
         e_preventDefault(e);
         focusInput();
         updateInput = true;
         move(); up();
+      }
       var move = connect(document, "mousemove", operation(function(e) {
         clearTimeout(going);
         e_preventDefault(e);
         if (!ie && !e_button(e)) done(e);
         else extend(e);
       }), true);
       var up = connect(document, "mouseup", operation(done), true);
+    }
     function onDoubleClick(e) {
       for (var n = e_target(e); n != wrapper; n = n.parentNode)
         if (n.parentNode == gutterText) return e_preventDefault(e);
       e_preventDefault(e);
+    }
     function onDrop(e) {
       if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
       e_preventDefault(e);
       var pos = posFromMouse(e, true), files = e.dataTransfer.files;
       if (!pos || options.readOnly) return;
       if (files && files.length && window.FileReader && window.File) {
         var n = files.length, text = Array(n), read = 0;
         var loadFile = function(file, i) {
           var reader = new FileReader;
           reader.onload = function() {
             text[i] = reader.result;
             if (++read == n) {
               pos = clipPos(pos);
               operation(function() {
                 var end = replaceRange(text.join(""), pos, pos);
                 setSelectionUser(pos, end);
               })();
       setSelection(doc, anchor, pos, bias);
     } else {
       setSelection(doc, pos, other || pos, bias);
+    }
     if (doc.cm) doc.cm.curOp.userSelChange = true;
+  }
   function filterSelectionChange(doc, anchor, head) {
     var obj = {anchor: anchor, head: head};
     signal(doc, "beforeSelectionChange", doc, obj);
     if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
     obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head);
     return obj;
+  }
   // Update the selection. Last two args are only used by
   // updateDoc, since they have to be expressed in the line
   // numbers before the update.
   function setSelection(doc, anchor, head, bias, checkAtomic) {
     if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) {
       var filtered = filterSelectionChange(doc, anchor, head);
       head = filtered.head;
       anchor = filtered.anchor;
+    }
     var sel = doc.sel;
     sel.goalColumn = null;
     // Skip over atomic spans.
     if (checkAtomic || !posEq(anchor, sel.anchor))
       anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push");
     if (checkAtomic || !posEq(head, sel.head))
       head = skipAtomic(doc, head, bias, checkAtomic != "push");
     if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return;
     sel.anchor = anchor; sel.head = head;
     var inv = posLess(head, anchor);
     sel.from = inv ? head : anchor;
     sel.to = inv ? anchor : head;
     if (doc.cm)
       doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
         doc.cm.curOp.cursorActivity = true;
     signalLater(doc, "cursorActivity", doc);
+  }
   function reCheckSelection(cm) {
     setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push");
+  }
   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;}
+              }
+            }
           };
           reader.readAsText(file);
         };
         for (var i = 0; i < n; ++i) loadFile(files[i], i);
       } else {
         // Don't do a replace if the drop happened inside of the selected text.
         if (draggingText && !(posLess(pos, sel.from) || posLess(sel.to, pos))) return;
         try {
           var text = e.dataTransfer.getData("Text");
           if (text) {
             compoundChange(function() {
               var curFrom = sel.from, curTo = sel.to;
               setSelectionUser(pos, pos);
               if (draggingText) replaceRange("", curFrom, curTo);
               replaceSelection(text);
               focusInput();
             });
             if (!m.atomic) continue;
             var newPos = m.find()[dir < 0 ? "from" : "to"];
             if (posEq(newPos, curPos)) {
               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;
+          }
+        }
         catch(e){}
+      }
+    }
     function onDragStart(e) {
       var txt = getSelection();
       e.dataTransfer.setData("Text", txt);
       // Use dummy image instead of default browsers image.
       if (e.dataTransfer.setDragImage)
         e.dataTransfer.setDragImage(elt('img'), 0, 0);
+    }
     function doHandleBinding(bound, dropShift) {
       if (typeof bound == "string") {
         bound = commands[bound];
         if (!bound) return false;
+      }
       var prevShift = shiftSelecting;
       try {
         if (options.readOnly) suppressEdits = true;
         if (dropShift) shiftSelecting = null;
         bound(instance);
       } catch(e) {
         if (e != Pass) throw e;
         return false;
       } finally {
         shiftSelecting = prevShift;
         suppressEdits = false;
+      }
       return true;
+    }
     var maybeTransition;
     function handleKeyBinding(e) {
       // Handle auto keymap transitions
       var startMap = getKeyMap(options.keyMap), next = startMap.auto;
       clearTimeout(maybeTransition);
       if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
         if (getKeyMap(options.keyMap) == startMap) {
           options.keyMap = (next.call ? next.call(null, instance) : next);
+        }
       }, 50);
       var name = keyNames[e_prop(e, "keyCode")], handled = false;
       var flipCtrlCmd = opera && mac;
       if (name == null || e.altGraphKey) return false;
       if (e_prop(e, "altKey")) name = "Alt-" + name;
       if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name;
       if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name;
       var stopped = false;
       function stop() { stopped = true; }
       if (e_prop(e, "shiftKey")) {
         handled = lookupKey("Shift-" + name, options.extraKeys, options.keyMap,
                             function(b) {return doHandleBinding(b, true);}, stop)
                || lookupKey(name, options.extraKeys, options.keyMap, function(b) {
                  if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(b);
                }, stop);
       } else {
         handled = lookupKey(name, options.extraKeys, options.keyMap, doHandleBinding, stop);
+      }
       if (stopped) handled = false;
       if (handled) {
         e_preventDefault(e);
         restartBlink();
         if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
+      }
       return handled;
+    }
     function handleCharBinding(e, ch) {
       var handled = lookupKey("'" + ch + "'", options.extraKeys,
                               options.keyMap, function(b) { return doHandleBinding(b, true); });
       if (handled) {
         e_preventDefault(e);
         restartBlink();
+      }
       return handled;
+    }
     var lastStoppedKey = null;
     function onKeyDown(e) {
       if (!focused) onFocus();
       if (ie && e.keyCode == 27) { e.returnValue = false; }
       if (pollingFast) { if (readInput()) pollingFast = false; }
       if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
       var code = e_prop(e, "keyCode");
       // IE does strange things with escape.
       setShift(code == 16 || e_prop(e, "shiftKey"));
       // First give onKeyEvent option a chance to handle this.
       var handled = handleKeyBinding(e);
       if (opera) {
         lastStoppedKey = handled ? code : null;
         // Opera has no cut event... we try to at least catch the key combo
         if (!handled && code == 88 && e_prop(e, mac ? "metaKey" : "ctrlKey"))
           replaceSelection("");
+      }
+    }
     function onKeyPress(e) {
       if (pollingFast) readInput();
       if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
       var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
       if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
       if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(e)) return;
       var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
       if (options.electricChars && mode.electricChars && options.smartIndent && !options.readOnly) {
         if (mode.electricChars.indexOf(ch) > -1)
           setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75);
       return curPos;
+    }
+  }
   // SCROLLING
   function scrollCursorIntoView(cm) {
     var coords = scrollPosIntoView(cm, cm.doc.sel.head);
     if (!cm.state.focused) return;
     var display = cm.display, box = getRect(display.sizer), doScroll = null, pTop = paddingTop(cm.display);
     if (coords.top + pTop + box.top < 0) doScroll = true;
     else if (coords.bottom + pTop + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
     if (doScroll != null && !phantom) {
       var hidden = display.cursor.style.display == "none";
       if (hidden) {
         display.cursor.style.display = "";
         display.cursor.style.left = coords.left + "px";
         display.cursor.style.top = (coords.top - display.viewOffset) + "px";
+      }
       if (handleCharBinding(e, ch)) return;
       fastPoll();
+    }
     function onKeyUp(e) {
       if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
       if (e_prop(e, "keyCode") == 16) shiftSelecting = null;
+    }
     function onFocus() {
       if (options.readOnly == "nocursor") return;
       if (!focused) {
         if (options.onFocus) options.onFocus(instance);
         focused = true;
         if (scroller.className.search(/\bCodeMirror-focused\b/) == -1)
           scroller.className += " CodeMirror-focused";
       display.cursor.scrollIntoView(doScroll);
       if (hidden) display.cursor.style.display = "none";
+    }
+  }
   function scrollPosIntoView(cm, pos, margin) {
     if (margin == null) margin = 0;
     for (;;) {
       var changed = false, coords = cursorCoords(cm, pos);
       var scrollPos = calculateScrollPos(cm, coords.left, coords.top - margin, coords.left, coords.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;
+      }
       slowPoll();
       restartBlink();
+    }
     function onBlur() {
       if (focused) {
         if (options.onBlur) options.onBlur(instance);
         focused = false;
         if (bracketHighlighted)
           operation(function(){
             if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; }
           })();
         scroller.className = scroller.className.replace(" CodeMirror-focused", "");
+      }
       clearInterval(blinker);
       setTimeout(function() {if (!focused) shiftSelecting = null;}, 150);
+    }
     // Replace the range from from to to by the strings in newText.
     // Afterwards, set the selection to selFrom, selTo.
     function updateLines(from, to, newText, selFrom, selTo) {
       if (suppressEdits) return;
       var old = [];
       doc.iter(from.line, to.line + 1, function(line) {
         old.push(newHL(line.text, line.markedSpans));
       });
       if (history) {
         history.addChange(from.line, newText.length, old);
         while (history.done.length > options.undoDepth) history.done.shift();
       if (scrollPos.scrollLeft != null) {
         setScrollLeft(cm, scrollPos.scrollLeft);
         if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
+      }
       var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);
       updateLinesNoUndo(from, to, lines, selFrom, selTo);
+    }
     function unredoHelper(from, to) {
       if (!from.length) return;
       var set = from.pop(), out = [];
       for (var i = set.length - 1; i >= 0; i -= 1) {
         var change = set[i];
         var replaced = [], end = change.start + change.added;
         doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); });
         out.push({start: change.start, added: change.old.length, old: replaced});
         var pos = {line: change.start + change.old.length - 1,
                    ch: editEnd(hlText(lst(replaced)), hlText(lst(change.old)))};
         updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length},
                           change.old, pos, pos);
+      }
       updateInput = true;
       to.push(out);
+    }
     function undo() {unredoHelper(history.done, history.undone);}
     function redo() {unredoHelper(history.undone, history.done);}
     function updateLinesNoUndo(from, to, lines, selFrom, selTo) {
       if (suppressEdits) return;
       var recomputeMaxLength = false, maxLineLength = maxLine.text.length;
       if (!options.lineWrapping)
         doc.iter(from.line, to.line + 1, function(line) {
           if (!line.hidden && line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}
         });
       if (from.line != to.line || lines.length > 1) gutterDirty = true;
       var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line);
       var lastHL = lst(lines);
       // First adjust the line structure
       if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") {
         // This is a whole-line replace. Treated specially to make
         // sure line objects move the way they are supposed to.
         var added = [], prevLine = null;
         for (var i = 0, e = lines.length - 1; i < e; ++i)
           added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
         lastLine.update(lastLine.text, hlSpans(lastHL));
         if (nlines) doc.remove(from.line, nlines, callbacks);
         if (added.length) doc.insert(from.line, added);
       } else if (firstLine == lastLine) {
         if (lines.length == 1) {
           firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + firstLine.text.slice(to.ch), hlSpans(lines[0]));
         } else {
           for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)
             added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
           added.push(new Line(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL)));
           firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
           doc.insert(from.line + 1, added);
+        }
       } else if (lines.length == 1) {
         firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + lastLine.text.slice(to.ch), hlSpans(lines[0]));
         doc.remove(from.line + 1, nlines, callbacks);
       } else {
         var added = [];
         firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
         lastLine.update(hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL));
         for (var i = 1, e = lines.length - 1; i < e; ++i)
           added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
         if (nlines > 1) doc.remove(from.line + 1, nlines - 1, callbacks);
         doc.insert(from.line + 1, added);
+      }
       if (options.lineWrapping) {
         var perLine = Math.max(5, scroller.clientWidth / charWidth() - 3);
         doc.iter(from.line, from.line + lines.length, function(line) {
           if (line.hidden) return;
           var guess = Math.ceil(line.text.length / perLine) || 1;
           if (guess != line.height) updateLineHeight(line, guess);
         });
       } else {
         doc.iter(from.line, from.line + lines.length, function(line) {
           var l = line.text;
           if (!line.hidden && l.length > maxLineLength) {
             maxLine = line; maxLineLength = l.length; maxLineChanged = true;
             recomputeMaxLength = false;
+          }
         });
         if (recomputeMaxLength) updateMaxLine = true;
+      }
       // Adjust frontier, schedule worker
       frontier = Math.min(frontier, from.line);
       startWorker(400);
       var lendiff = lines.length - nlines - 1;
       // Remember that these lines changed, for updating the display
       changes.push({from: from.line, to: to.line + 1, diff: lendiff});
       if (options.onChange) {
         // Normalize lines to contain only strings, since that's what
         // the change event handler expects
         for (var i = 0; i < lines.length; ++i)
           if (typeof lines[i] != "string") lines[i] = lines[i].text;
         var changeObj = {from: from, to: to, text: lines};
         if (textChanged) {
           for (var cur = textChanged; cur.next; cur = cur.next) {}
           cur.next = changeObj;
         } else textChanged = changeObj;
+      }
       // Update the selection
       function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
       setSelection(clipPos(selFrom), clipPos(selTo),
                    updateLine(sel.from.line), updateLine(sel.to.line));
+    }
     function needsScrollbar() {
       var realHeight = doc.height * textHeight() + 2 * paddingTop();
       return realHeight * .99 > scroller.offsetHeight ? realHeight : false;
+    }
     function updateVerticalScroll(scrollTop) {
       var scrollHeight = needsScrollbar();
       scrollbar.style.display = scrollHeight ? "block" : "none";
       if (scrollHeight) {
         scrollbarInner.style.height = sizer.style.minHeight = scrollHeight + "px";
         scrollbar.style.height = scroller.clientHeight + "px";
         if (scrollTop != null) {
           scrollbar.scrollTop = scroller.scrollTop = scrollTop;
           // 'Nudge' the scrollbar to work around a Webkit bug where,
           // in some situations, we'd end up with a scrollbar that
           // reported its scrollTop (and looked) as expected, but
           // *behaved* as if it was still in a previous state (i.e.
           // couldn't scroll up, even though it appeared to be at the
           // bottom).
           if (webkit) setTimeout(function() {
             if (scrollbar.scrollTop != scrollTop) return;
             scrollbar.scrollTop = scrollTop + (scrollTop ? -1 : 1);
             scrollbar.scrollTop = scrollTop;
           }, 0);
+        }
       } else {
         sizer.style.minHeight = "";
+      }
       // Position the mover div to align with the current virtual scroll position
       mover.style.top = displayOffset * textHeight() + "px";
+    }
     function computeMaxLength() {
       maxLine = getLine(0); maxLineChanged = true;
       var maxLineLength = maxLine.text.length;
       doc.iter(1, doc.size, function(line) {
         var l = line.text;
         if (!line.hidden && l.length > maxLineLength) {
           maxLineLength = l.length; maxLine = line;
+        }
       });
       updateMaxLine = false;
+    }
     function replaceRange(code, from, to) {
       from = clipPos(from);
       if (!to) to = from; else to = clipPos(to);
       code = splitLines(code);
       function adjustPos(pos) {
         if (posLess(pos, from)) return pos;
         if (!posLess(to, pos)) return end;
         var line = pos.line + code.length - (to.line - from.line) - 1;
         var ch = pos.ch;
         if (pos.line == to.line)
           ch += lst(code).length - (to.ch - (to.line == from.line ? from.ch : 0));
         return {line: line, ch: ch};
       if (!changed) return coords;
+    }
+  }
   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);
+  }
   function calculateScrollPos(cm, x1, y1, x2, y2) {
     var display = cm.display, pt = paddingTop(display);
     y1 += pt; y2 += pt;
     if (y1 < 0) y1 = 0;
     var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
     var docBottom = cm.doc.height + paddingVert(display);
     var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
     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 screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
     x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
     var gutterw = display.gutters.offsetWidth;
     var atLeft = x1 < gutterw + 10;
     if (x1 < screenleft + gutterw || atLeft) {
       if (atLeft) x1 = 0;
       result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
     } else if (x2 > screenw + screenleft - 3) {
       result.scrollLeft = x2 + 10 - screenw;
+    }
     return result;
+  }
   function updateScrollPos(cm, left, top) {
     cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left,
                                 scrollTop: top == null ? cm.doc.scrollTop : top};
+  }
   function addToScrollPos(cm, left, top) {
     var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop});
     var scroll = cm.display.scroller;
     pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top));
     pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left));
+  }
   // API UTILITIES
   function indentLine(cm, n, how, aggressive) {
     var doc = cm.doc;
     if (!how) how = "add";
     if (how == "smart") {
       if (!cm.doc.mode.indent) how = "prev";
       else var state = getStateBefore(cm, n);
+    }
     var tabSize = cm.options.tabSize;
     var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
     var curSpaceString = line.text.match(/^\s*/)[0], indentation;
     if (how == "smart") {
       indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
       if (indentation == Pass) {
         if (!aggressive) return;
         how = "prev";
+      }
       var end;
       replaceRange1(code, from, to, function(end1) {
         end = end1;
         return {from: adjustPos(sel.from), to: adjustPos(sel.to)};
       });
       return end;
+    }
     function replaceSelection(code, collapse) {
       replaceRange1(splitLines(code), sel.from, sel.to, function(end) {
         if (collapse == "end") return {from: end, to: end};
         else if (collapse == "start") return {from: sel.from, to: sel.from};
         else return {from: sel.from, to: end};
       });
+    }
     function replaceRange1(code, from, to, computeSel) {
       var endch = code.length == 1 ? code[0].length + from.ch : lst(code).length;
       var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
       updateLines(from, to, code, newSel.from, newSel.to);
+    }
     function getRange(from, to, lineSep) {
       var l1 = from.line, l2 = to.line;
       if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch);
       var code = [getLine(l1).text.slice(from.ch)];
       doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
       code.push(getLine(l2).text.slice(0, to.ch));
       return code.join(lineSep || "\n");
+    }
     function getSelection(lineSep) {
       return getRange(sel.from, sel.to, lineSep);
+    }
     function slowPoll() {
       if (pollingFast) return;
       poll.set(options.pollInterval, function() {
         readInput();
         if (focused) slowPoll();
       });
+    }
     function fastPoll() {
       var missed = false;
       pollingFast = true;
       function p() {
         var changed = readInput();
         if (!changed && !missed) {missed = true; poll.set(60, p);}
         else {pollingFast = false; slowPoll();}
+      }
       poll.set(20, p);
+    }
     // Previnput is a hack to work with IME. If we reset the textarea
     // on every change, that breaks IME. So we look for changes
     // compared to the previous content instead. (Modern browsers have
     // events that indicate IME taking place, but these are not widely
     // supported or compatible enough yet to rely on.)
     var prevInput = "";
     function readInput() {
       if (!focused || hasSelection(input) || options.readOnly) return false;
       var text = input.value;
       if (text == prevInput) return false;
       if (!nestedOperation) startOperation();
       shiftSelecting = null;
       var same = 0, l = Math.min(prevInput.length, text.length);
       while (same < l && prevInput[same] == text[same]) ++same;
       if (same < prevInput.length)
         sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)};
       else if (overwrite && posEq(sel.from, sel.to) && !pasteIncoming)
         sel.to = {line: sel.to.line, ch: Math.min(getLine(sel.to.line).text.length, sel.to.ch + (text.length - same))};
       replaceSelection(text.slice(same), "end");
       if (text.length > 1000) { input.value = prevInput = ""; }
       else prevInput = text;
       if (!nestedOperation) endOperation();
       pasteIncoming = false;
+    }
     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;
+    }
     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(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
     line.stateAfter = null;
+  }
   function changeLine(cm, handle, op) {
     var no = handle, line = handle, doc = cm.doc;
     if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
     else no = lineNo(handle);
     if (no == null) return null;
     if (op(line, no)) regChange(cm, no, no + 1);
     else return null;
     return line;
+  }
   function findPosH(doc, pos, dir, unit, visually) {
     var line = pos.line, ch = pos.ch;
     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;
+    }
     function resetInput(user) {
       if (!posEq(sel.from, sel.to)) {
         prevInput = "";
         input.value = getSelection();
         if (focused) selectInput(input);
       } else if (user) prevInput = input.value = "";
+    }
     function focusInput() {
       if (options.readOnly != "nocursor") input.focus();
+    }
     function scrollCursorIntoView() {
       var coords = calculateCursorCoords();
       scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
       if (!focused) return;
       var box = sizer.getBoundingClientRect(), doScroll = null;
       if (coords.y + box.top < 0) doScroll = true;
       else if (coords.y + box.top + textHeight() > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
       if (doScroll != null) {
         var hidden = cursor.style.display == "none";
         if (hidden) {
           cursor.style.display = "";
           cursor.style.left = coords.x + "px";
           cursor.style.top = (coords.y - displayOffset) + "px";
     if (unit == "char") moveOnce();
     else if (unit == "column") moveOnce(true);
     else if (unit == "word" || unit == "group") {
       var sawType = null, group = unit == "group";
       for (var first = true;; first = false) {
         if (dir < 0 && !moveOnce(!first)) break;
         var cur = lineObj.text.charAt(ch) || "\n";
         var type = isWordChar(cur) ? "w"
           : !group ? null
           : /\s/.test(cur) ? null
           : "p";
         if (sawType && sawType != type) {
           if (dir < 0) {dir = 1; moveOnce();}
           break;
+        }
         cursor.scrollIntoView(doScroll);
         if (hidden) cursor.style.display = "none";
+      }
+    }
     function calculateCursorCoords() {
       var cursor = localCoords(sel.inverted ? sel.from : sel.to);
       var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;
       return {x: x, y: cursor.y, yBot: cursor.yBot};
+    }
     function scrollIntoView(x1, y1, x2, y2) {
       var scrollPos = calculateScrollPos(x1, y1, x2, y2);
       if (scrollPos.scrollLeft != null) {scroller.scrollLeft = scrollPos.scrollLeft;}
       if (scrollPos.scrollTop != null) {scrollbar.scrollTop = scroller.scrollTop = scrollPos.scrollTop;}
+    }
     function calculateScrollPos(x1, y1, x2, y2) {
       var pl = paddingLeft(), pt = paddingTop();
       y1 += pt; y2 += pt; x1 += pl; x2 += pl;
       var screen = scroller.clientHeight, screentop = scrollbar.scrollTop, result = {};
       var docBottom = needsScrollbar() || Infinity;
       var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
       if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);
       else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen;
       var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft;
       var gutterw = options.fixedGutter ? gutter.clientWidth : 0;
       var atLeft = x1 < gutterw + pl + 10;
       if (x1 < screenleft + gutterw || atLeft) {
         if (atLeft) x1 = 0;
         result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
       } else if (x2 > screenw + screenleft - 3) {
         result.scrollLeft = x2 + 10 - screenw;
+      }
       return result;
+    }
     function visibleLines(scrollTop) {
       var lh = textHeight(), top = (scrollTop != null ? scrollTop : scrollbar.scrollTop) - paddingTop();
       var fromHeight = Math.max(0, Math.floor(top / lh));
       var toHeight = Math.ceil((top + scroller.clientHeight) / lh);
       return {from: lineAtHeight(doc, fromHeight),
               to: lineAtHeight(doc, toHeight)};
+    }
     // Uses a set of changes plus the current scroll position to
     // determine which DOM updates have to be made, and makes the
     // updates.
     function updateDisplay(changes, suppressCallback, scrollTop) {
       if (!scroller.clientWidth) {
         showingFrom = showingTo = displayOffset = 0;
         return;
+      }
       // Compute the new visible window
       // If scrollTop is specified, use that to determine which lines
       // to render instead of the current scrollbar position.
       var visible = visibleLines(scrollTop);
       // Bail out if the visible area is already rendered and nothing changed.
       if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) {
         updateVerticalScroll(scrollTop);
         return;
         if (type) sawType = type;
         if (dir > 0 && !moveOnce(!first)) break;
+      }
       var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100);
       if (showingFrom < from && from - showingFrom < 20) from = showingFrom;
       if (showingTo > to && showingTo - to < 20) to = Math.min(doc.size, showingTo);
       // Create a range of theoretically intact lines, and punch holes
       // in that using the change info.
       var intact = changes === true ? [] :
         computeIntact([{from: showingFrom, to: showingTo, domStart: 0}], changes);
       // Clip off the parts that won't be visible
       var intactLines = 0;
       for (var i = 0; i < intact.length; ++i) {
         var range = intact[i];
         if (range.from < from) {range.domStart += (from - range.from); range.from = from;}
         if (range.to > to) range.to = to;
         if (range.from >= range.to) intact.splice(i--, 1);
         else intactLines += range.to - range.from;
+      }
       if (intactLines == to - from && from == showingFrom && to == showingTo) {
         updateVerticalScroll(scrollTop);
         return;
+      }
       intact.sort(function(a, b) {return a.domStart - b.domStart;});
       var th = textHeight(), gutterDisplay = gutter.style.display;
       lineDiv.style.display = "none";
       patchDisplay(from, to, intact);
       lineDiv.style.display = gutter.style.display = "";
       var different = from != showingFrom || to != showingTo || lastSizeC != scroller.clientHeight + th;
       // This is just a bogus formula that detects when the editor is
       // resized or the font size changes.
       if (different) lastSizeC = scroller.clientHeight + th;
       if (from != showingFrom || to != showingTo && options.onViewportChange)
         setTimeout(function(){
           if (options.onViewportChange) options.onViewportChange(instance, from, to);
         });
       showingFrom = from; showingTo = to;
       displayOffset = heightAtLine(doc, from);
       startWorker(100);
       // Since this is all rather error prone, it is honoured with the
       // only assertion in the whole file.
       if (lineDiv.childNodes.length != showingTo - showingFrom)
         throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) +
                         " nodes=" + lineDiv.childNodes.length);
       function checkHeights() {
         var curNode = lineDiv.firstChild, heightChanged = false;
         doc.iter(showingFrom, showingTo, function(line) {
           // Work around bizarro IE7 bug where, sometimes, our curNode
           // is magically replaced with a new node in the DOM, leaving
           // us with a reference to an orphan (nextSibling-less) node.
           if (!curNode) return;
           if (!line.hidden) {
             var height = Math.round(curNode.offsetHeight / th) || 1;
             if (line.height != height) {
               updateLineHeight(line, height);
               gutterDirty = heightChanged = true;
+            }
+          }
           curNode = curNode.nextSibling;
         });
         return heightChanged;
+      }
       if (options.lineWrapping) checkHeights();
       gutter.style.display = gutterDisplay;
       if (different || gutterDirty) {
         // If the gutter grew in size, re-check heights. If those changed, re-draw gutter.
         updateGutter() && options.lineWrapping && checkHeights() && updateGutter();
+    }
     var result = skipAtomic(doc, Pos(line, ch), dir, true);
     if (!possible) result.hitSide = true;
     return result;
+  }
   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;
+  }
   function findWordAt(line, pos) {
     var start = pos.ch, end = pos.ch;
     if (line) {
       if (pos.after === false || end == line.length) --start; else ++end;
       var startChar = line.charAt(start);
       var check = isWordChar(startChar) ? isWordChar
         : /\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 {from: Pos(pos.line, start), to: Pos(pos.line, end)};
+  }
   function selectLine(cm, line) {
     extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0)));
+  }
   // PROTOTYPE
   // The publicly visible API. Note that operation(null, f) means
   // 'wrap f in an operation, performed on its `this` parameter'
   CodeMirror.prototype = {
     focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);},
     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"](map);
     },
     removeKeyMap: function(map) {
       var maps = this.state.keyMaps;
       for (var i = 0; i < maps.length; ++i)
         if ((typeof map == "string" ? maps[i].name : maps[i]) == map) {
           maps.splice(i, 1);
           return true;
+        }
     },
     addOverlay: operation(null, 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: operation(null, function(spec) {
       var overlays = this.state.overlays;
       for (var i = 0; i < overlays.length; ++i) {
         if (overlays[i].modeSpec == spec) {
           overlays.splice(i, 1);
           this.state.modeGen++;
           regChange(this);
           return;
+        }
+      }
       updateVerticalScroll(scrollTop);
       updateSelection();
       if (!suppressCallback && options.onUpdate) options.onUpdate(instance);
       return true;
+    }
     function computeIntact(intact, changes) {
       for (var i = 0, l = changes.length || 0; i < l; ++i) {
         var change = changes[i], intact2 = [], diff = change.diff || 0;
         for (var j = 0, l2 = intact.length; j < l2; ++j) {
           var range = intact[j];
           if (change.to <= range.from && change.diff)
             intact2.push({from: range.from + diff, to: range.to + diff,
                           domStart: range.domStart});
           else if (change.to <= range.from || change.from >= range.to)
             intact2.push(range);
           else {
             if (change.from > range.from)
               intact2.push({from: range.from, to: change.from, domStart: range.domStart});
             if (change.to < range.to)
               intact2.push({from: change.to + diff, to: range.to + diff,
                             domStart: range.domStart + (change.to - range.from)});
+          }
+        }
         intact = intact2;
     }),
     indentLine: operation(null, function(n, dir, aggressive) {
       if (typeof dir != "string") {
         if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
         else dir = dir ? "add" : "subtract";
+      }
       return intact;
+    }
     function patchDisplay(from, to, intact) {
       function killNode(node) {
         var tmp = node.nextSibling;
         node.parentNode.removeChild(node);
         return tmp;
+      }
       // The first pass removes the DOM nodes that aren't intact.
       if (!intact.length) removeChildren(lineDiv);
       else {
         var domPos = 0, curNode = lineDiv.firstChild, n;
         for (var i = 0; i < intact.length; ++i) {
           var cur = intact[i];
           while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}
           for (var j = 0, e = cur.to - cur.from; j < e; ++j) {curNode = curNode.nextSibling; domPos++;}
+        }
         while (curNode) curNode = killNode(curNode);
       if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
     }),
     indentSelection: operation(null, function(how) {
       var sel = this.doc.sel;
       if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how);
       var e = sel.to.line - (sel.to.ch ? 0 : 1);
       for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
     }),
     // Fetch the parser token for a given character. Useful for hacks
     // that want to inspect the mode state (say, for completion).
     getTokenAt: function(pos) {
       var doc = this.doc;
       pos = clipPos(doc, pos);
       var state = getStateBefore(this, pos.line), mode = this.doc.mode;
       var line = getLine(doc, pos.line);
       var stream = new StringStream(line.text, this.options.tabSize);
       while (stream.pos < pos.ch && !stream.eol()) {
         stream.start = stream.pos;
         var style = mode.token(stream, state);
+      }
       // This pass fills in the lines that actually changed.
       var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from;
       doc.iter(from, to, function(line) {
         if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
         if (!nextIntact || nextIntact.from > j) {
           if (line.hidden) var lineElement = elt("pre");
           else {
             var lineElement = lineContent(line);
             if (line.className) lineElement.className = line.className;
             // Kludge to make sure the styled element lies behind the selection (by z-index)
             if (line.bgClassName) {
               var pre = elt("pre", "\u00a0", line.bgClassName, "position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: -2");
               lineElement = elt("div", [pre, lineElement], null, "position: relative");
+            }
+          }
           lineDiv.insertBefore(lineElement, curNode);
         } else {
           curNode = curNode.nextSibling;
+        }
         ++j;
       return {start: stream.start,
               end: stream.pos,
               string: stream.current(),
               className: style || null, // Deprecated, use 'type' instead
               type: style || null,
               state: state};
     },
     getStateAfter: function(line) {
       var doc = this.doc;
       line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
       return getStateBefore(this, line + 1);
     },
     cursorCoords: function(start, mode) {
       var pos, sel = this.doc.sel;
       if (start == null) pos = sel.head;
       else if (typeof start == "object") pos = clipPos(this.doc, start);
       else pos = start ? sel.from : sel.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);
     },
     defaultTextHeight: function() { return textHeight(this.display); },
     defaultCharWidth: function() { return charWidth(this.display); },
     setGutterMarker: operation(null, function(line, gutterID, value) {
       return changeLine(this, line, function(line) {
         var markers = line.gutterMarkers || (line.gutterMarkers = {});
         markers[gutterID] = value;
         if (!value && isEmpty(markers)) line.gutterMarkers = null;
         return true;
       });
+    }
     function updateGutter() {
       if (!options.gutter && !options.lineNumbers) return;
       var hText = mover.offsetHeight, hEditor = scroller.clientHeight;
       gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px";
       var fragment = document.createDocumentFragment(), i = showingFrom, normalNode;
       doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
         if (line.hidden) {
           fragment.appendChild(elt("pre"));
         } else {
           var marker = line.gutterMarker;
           var text = options.lineNumbers ? options.lineNumberFormatter(i + options.firstLineNumber) : null;
           if (marker && marker.text)
             text = marker.text.replace("%N%", text != null ? text : "");
           else if (text == null)
             text = "\u00a0";
           var markerElement = fragment.appendChild(elt("pre", null, marker && marker.style));
           markerElement.innerHTML = text;
           for (var j = 1; j < line.height; ++j) {
             markerElement.appendChild(elt("br"));
             markerElement.appendChild(document.createTextNode("\u00a0"));
+          }
           if (!marker) normalNode = i;
     }),
     clearGutter: operation(null, 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;
           regChange(cm, i, i + 1);
           if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
+        }
         ++i;
       });
       gutter.style.display = "none";
       removeChildrenAndAdd(gutterText, fragment);
       // Make sure scrolling doesn't cause number gutter size to pop
       if (normalNode != null && options.lineNumbers) {
         var node = gutterText.childNodes[normalNode - showingFrom];
         var minwidth = String(doc.size).length, val = eltText(node.firstChild), pad = "";
         while (val.length + pad.length < minwidth) pad += "\u00a0";
         if (pad) node.insertBefore(document.createTextNode(pad), node.firstChild);
+      }
       gutter.style.display = "";
       var resized = Math.abs((parseInt(lineSpace.style.marginLeft) || 0) - gutter.offsetWidth) > 2;
       lineSpace.style.marginLeft = gutter.offsetWidth + "px";
       gutterDirty = false;
       return resized;
+    }
     function updateSelection() {
       var collapsed = posEq(sel.from, sel.to);
       var fromPos = localCoords(sel.from, true);
       var toPos = collapsed ? fromPos : localCoords(sel.to, true);
       var headPos = sel.inverted ? fromPos : toPos, th = textHeight();
       var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv);
       inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px";
       inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px";
       if (collapsed) {
         cursor.style.top = headPos.y + "px";
         cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px";
         cursor.style.display = "";
         selectionDiv.style.display = "none";
       } else {
         var sameLine = fromPos.y == toPos.y, fragment = document.createDocumentFragment();
         var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth;
         var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight;
         var add = function(left, top, right, height) {
           var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px"
                                   : "right: " + right + "px";
           fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
                                    "px; top: " + top + "px; " + rstyle + "; height: " + height + "px"));
         };
         if (sel.from.ch && fromPos.y >= 0) {
           var right = sameLine ? clientWidth - toPos.x : 0;
           add(fromPos.x, fromPos.y, right, th);
+        }
         var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0));
         var middleHeight = Math.min(toPos.y, clientHeight) - middleStart;
         if (middleHeight > 0.2 * th)
           add(0, middleStart, 0, middleHeight);
         if ((!sameLine || !sel.from.ch) && toPos.y < clientHeight - .5 * th)
           add(0, toPos.y, clientWidth - toPos.x, th);
         removeChildrenAndAdd(selectionDiv, fragment);
         cursor.style.display = "none";
         selectionDiv.style.display = "";
+      }
+    }
     function setShift(val) {
       if (val) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from);
       else shiftSelecting = null;
+    }
     function setSelectionUser(from, to) {
       var sh = shiftSelecting && clipPos(shiftSelecting);
       if (sh) {
         if (posLess(sh, from)) from = sh;
         else if (posLess(to, sh)) to = sh;
+      }
       setSelection(from, to);
       userSelChange = true;
+    }
     // Update the selection. Last two args are only used by
     // updateLines, since they have to be expressed in the line
     // numbers before the update.
     function setSelection(from, to, oldFrom, oldTo) {
       goalColumn = null;
       if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;}
       if (posEq(sel.from, from) && posEq(sel.to, to)) return;
       if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
       // Skip over hidden lines.
       if (from.line != oldFrom) {
         var from1 = skipHidden(from, oldFrom, sel.from.ch);
         // If there is no non-hidden line left, force visibility on current line
         if (!from1) setLineHidden(from.line, false);
         else from = from1;
+      }
       if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch);
       if (posEq(from, to)) sel.inverted = false;
       else if (posEq(from, sel.to)) sel.inverted = false;
       else if (posEq(to, sel.from)) sel.inverted = true;
       if (options.autoClearEmptyLines && posEq(sel.from, sel.to)) {
         var head = sel.inverted ? from : to;
         if (head.line != sel.from.line && sel.from.line < doc.size) {
           var oldLine = getLine(sel.from.line);
           if (/^\s+$/.test(oldLine.text))
             setTimeout(operation(function() {
               if (oldLine.parent && /^\s+$/.test(oldLine.text)) {
                 var no = lineNo(oldLine);
                 replaceRange("", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});
+              }
             }, 10));
+        }
+      }
       sel.from = from; sel.to = to;
       selectionChanged = true;
+    }
     function skipHidden(pos, oldLine, oldCh) {
       function getNonHidden(dir) {
         var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;
         while (lNo != end) {
           var line = getLine(lNo);
           if (!line.hidden) {
             var ch = pos.ch;
             if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length;
             return {line: lNo, ch: ch};
+          }
           lNo += dir;
+        }
+      }
       var line = getLine(pos.line);
       var toEnd = pos.ch == line.text.length && pos.ch != oldCh;
       if (!line.hidden) return pos;
       if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);
       else return getNonHidden(-1) || getNonHidden(1);
+    }
     function setCursor(line, ch, user) {
       var pos = clipPos({line: line, ch: ch || 0});
       (user ? setSelectionUser : setSelection)(pos, pos);
+    }
     function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));}
     function clipPos(pos) {
       if (pos.line < 0) return {line: 0, ch: 0};
       if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length};
       var ch = pos.ch, linelen = getLine(pos.line).text.length;
       if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
       else if (ch < 0) return {line: pos.line, ch: 0};
       else return pos;
+    }
     function findPosH(dir, unit) {
       var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch;
       var lineObj = getLine(line);
       function findNextLine() {
         for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {
           var lo = getLine(l);
           if (!lo.hidden) { line = l; lineObj = lo; return true; }
+        }
+      }
       function moveOnce(boundToLine) {
         if (ch == (dir < 0 ? 0 : lineObj.text.length)) {
           if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0;
           else return false;
         } else ch += dir;
     }),
     addLineClass: operation(null, function(handle, where, cls) {
       return changeLine(this, handle, function(line) {
         var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
         if (!line[prop]) line[prop] = cls;
         else if (new RegExp("\\b" + cls + "\\b").test(line[prop])) return false;
         else line[prop] += " " + cls;
         return true;
+      }
       if (unit == "char") moveOnce();
       else if (unit == "column") moveOnce(true);
       else if (unit == "word") {
         var sawWord = false;
         for (;;) {
           if (dir < 0) if (!moveOnce()) break;
           if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
           else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
           if (dir > 0) if (!moveOnce()) break;
       });
     }),
     removeLineClass: operation(null, function(handle, where, cls) {
       return changeLine(this, handle, function(line) {
         var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
         var cur = line[prop];
         if (!cur) return false;
         else if (cls == null) line[prop] = null;
         else {
           var upd = cur.replace(new RegExp("^" + cls + "\\b\\s*|\\s*\\b" + cls + "\\b"), "");
           if (upd == cur) return false;
           line[prop] = upd || null;
+        }
+      }
       return {line: line, ch: ch};
+    }
     function moveH(dir, unit) {
       var pos = dir < 0 ? sel.from : sel.to;
       if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit);
       setCursor(pos.line, pos.ch, true);
+    }
     function deleteH(dir, unit) {
       if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to);
       else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to);
       else replaceRange("", sel.from, findPosH(dir, unit));
       userSelChange = true;
+    }
     function moveV(dir, unit) {
       var dist = 0, pos = localCoords(sel.inverted ? sel.from : sel.to, true);
       if (goalColumn != null) pos.x = goalColumn;
       if (unit == "page") {
         var screen = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
         var target = coordsChar(pos.x, pos.y + screen * dir);
       } else if (unit == "line") {
         var th = textHeight();
         var target = coordsChar(pos.x, pos.y + .5 * th + dir * th);
+      }
       if (unit == "page") scrollbar.scrollTop += localCoords(target, true).y - pos.y;
       setCursor(target.line, target.ch, true);
       goalColumn = pos.x;
+    }
     function findWordAt(pos) {
       var line = getLine(pos.line).text;
       var start = pos.ch, end = pos.ch;
       if (line) {
         if (pos.after === false || end == line.length) --start; else ++end;
         var startChar = line.charAt(start);
         var check = isWordChar(startChar) ? isWordChar :
                     /\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 {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}};
+    }
     function selectLine(line) {
       setSelectionUser({line: line, ch: 0}, clipPos({line: line + 1, ch: 0}));
+    }
     function indentSelected(mode) {
       if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode);
       var e = sel.to.line - (sel.to.ch ? 0 : 1);
       for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode);
+    }
     function indentLine(n, how) {
       if (!how) how = "add";
       if (how == "smart") {
         if (!mode.indent) how = "prev";
         else var state = getStateBefore(n);
+      }
       var line = getLine(n), curSpace = line.indentation(options.tabSize),
           curSpaceString = line.text.match(/^\s*/)[0], indentation;
       if (how == "smart") {
         indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
         if (indentation == Pass) how = "prev";
+      }
       if (how == "prev") {
         if (n) indentation = getLine(n-1).indentation(options.tabSize);
         else indentation = 0;
+      }
       else if (how == "add") indentation = curSpace + options.indentUnit;
       else if (how == "subtract") indentation = curSpace - options.indentUnit;
       indentation = Math.max(0, indentation);
       var diff = indentation - curSpace;
       var indentString = "", pos = 0;
       if (options.indentWithTabs)
         for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
       if (pos < indentation) indentString += spaceStr(indentation - pos);
       if (indentString != curSpaceString)
         replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
       line.stateAfter = null;
+    }
     function loadMode() {
       mode = CodeMirror.getMode(options, options.mode);
       doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
       frontier = 0;
       startWorker(100);
+    }
     function gutterChanged() {
       var visible = options.gutter || options.lineNumbers;
       gutter.style.display = visible ? "" : "none";
       if (visible) gutterDirty = true;
       else lineDiv.parentNode.style.marginLeft = 0;
+    }
     function wrappingChanged(from, to) {
       if (options.lineWrapping) {
         wrapper.className += " CodeMirror-wrap";
         var perLine = scroller.clientWidth / charWidth() - 3;
         doc.iter(0, doc.size, function(line) {
           if (line.hidden) return;
           var guess = Math.ceil(line.text.length / perLine) || 1;
           if (guess != 1) updateLineHeight(line, guess);
         });
         lineSpace.style.minWidth = widthForcer.style.left = "";
       } else {
         wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
         computeMaxLength();
         doc.iter(0, doc.size, function(line) {
           if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
         });
+      }
       changes.push({from: 0, to: doc.size});
+    }
     function themeChanged() {
       scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") +
         options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+    }
     function keyMapChanged() {
       var style = keyMap[options.keyMap].style;
       wrapper.className = wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
         (style ? " cm-keymap-" + style : "");
+    }
     function TextMarker(type, style) { this.lines = []; this.type = type; if (style) this.style = style; }
     TextMarker.prototype.clear = operation(function() {
       var min, max;
       for (var i = 0; i < this.lines.length; ++i) {
         var line = this.lines[i];
         var span = getMarkedSpanFor(line.markedSpans, this);
         if (span.from != null) min = lineNo(line);
         if (span.to != null) max = lineNo(line);
         line.markedSpans = removeMarkedSpan(line.markedSpans, span);
+      }
       if (min != null) changes.push({from: min, to: max + 1});
       this.lines.length = 0;
       this.explicitlyCleared = true;
     });
     TextMarker.prototype.find = function() {
       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 || span.to != null) {
           var found = lineNo(line);
           if (span.from != null) from = {line: found, ch: span.from};
           if (span.to != null) to = {line: found, ch: span.to};
+        }
+      }
       if (this.type == "bookmark") return from;
       return from && {from: from, to: to};
     };
     function markText(from, to, className, options) {
       from = clipPos(from); to = clipPos(to);
       var marker = new TextMarker("range", className);
       if (options) for (var opt in options) if (options.hasOwnProperty(opt))
         marker[opt] = options[opt];
       var curLine = from.line;
       doc.iter(curLine, to.line + 1, function(line) {
         var span = {from: curLine == from.line ? from.ch : null,
                     to: curLine == to.line ? to.ch : null,
                     marker: marker};
         line.markedSpans = (line.markedSpans || []).concat([span]);
         marker.lines.push(line);
         ++curLine;
         return true;
       });
       changes.push({from: from.line, to: to.line + 1});
       return marker;
+    }
     function setBookmark(pos) {
       pos = clipPos(pos);
       var marker = new TextMarker("bookmark"), line = getLine(pos.line);
       history.addChange(pos.line, 1, [newHL(line.text, line.markedSpans)], true);
       var span = {from: pos.ch, to: pos.ch, marker: marker};
       line.markedSpans = (line.markedSpans || []).concat([span]);
       marker.lines.push(line);
       return marker;
+    }
     function findMarksAt(pos) {
       pos = clipPos(pos);
       var markers = [], spans = getLine(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);
+      }
       return markers;
+    }
     function addGutterMarker(line, text, className) {
       if (typeof line == "number") line = getLine(clipLine(line));
       line.gutterMarker = {text: text, style: className};
       gutterDirty = true;
       return line;
+    }
     function removeGutterMarker(line) {
       if (typeof line == "number") line = getLine(clipLine(line));
       line.gutterMarker = null;
       gutterDirty = true;
+    }
     function changeLine(handle, op) {
       var no = handle, line = handle;
       if (typeof handle == "number") line = getLine(clipLine(handle));
       else no = lineNo(handle);
       if (no == null) return null;
       if (op(line, no)) changes.push({from: no, to: no + 1});
       else return null;
       return line;
+    }
     function setLineClass(handle, className, bgClassName) {
       return changeLine(handle, function(line) {
         if (line.className != className || line.bgClassName != bgClassName) {
           line.className = className;
           line.bgClassName = bgClassName;
           return true;
+        }
       });
+    }
     function setLineHidden(handle, hidden) {
       return changeLine(handle, function(line, no) {
         if (line.hidden != hidden) {
           line.hidden = hidden;
           if (!options.lineWrapping) {
             if (hidden && line.text.length == maxLine.text.length) {
               updateMaxLine = true;
             } else if (!hidden && line.text.length > maxLine.text.length) {
               maxLine = line; updateMaxLine = false;
+            }
+          }
           updateLineHeight(line, hidden ? 0 : 1);
           var fline = sel.from.line, tline = sel.to.line;
           if (hidden && (fline == no || tline == no)) {
             var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from;
             var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to;
             // Can't hide the last visible line, we'd have no place to put the cursor
             if (!to) return;
             setSelection(from, to);
+          }
           return (gutterDirty = true);
+        }
       });
+    }
     function lineInfo(line) {
     }),
     addLineWidget: operation(null, function(handle, node, options) {
       return addLineWidget(this, handle, node, options);
     }),
     removeLineWidget: function(widget) { widget.clear(); },
     lineInfo: function(line) {
       if (typeof line == "number") {
         if (!isLine(line)) return null;
+        if (!isLine(this.doc, line)) return null;
         var n = line;
         line = getLine(line);
+        line = getLine(this.doc, line);
         if (!line) return null;
       } else {
         var n = lineNo(line);
         if (n == null) return null;
+      }
       var marker = line.gutterMarker;
       return {line: n, handle: line, text: line.text, markerText: marker && marker.text,
               markerClass: marker && marker.style, lineClass: line.className, bgClass: line.bgClassName};
+    }
     function measureLine(line, ch) {
       if (ch == 0) return {top: 0, left: 0};
       var pre = lineContent(line, ch);
       removeChildrenAndAdd(measure, pre);
       var anchor = pre.anchor;
       var top = anchor.offsetTop, left = anchor.offsetLeft;
       // Older IEs report zero offsets for spans directly after a wrap
       if (ie && top == 0 && left == 0) {
         var backup = elt("span", "x");
         anchor.parentNode.insertBefore(backup, anchor.nextSibling);
         top = backup.offsetTop;
+      }
       return {top: top, left: left};
+    }
     function localCoords(pos, inLineWrap) {
       var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0));
       if (pos.ch == 0) x = 0;
       else {
         var sp = measureLine(getLine(pos.line), pos.ch);
         x = sp.left;
         if (options.lineWrapping) y += Math.max(0, sp.top);
       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.showingFrom, to: this.display.showingTo};},
     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";
       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;
+      }
       return {x: x, y: y, yBot: y + lh};
+    }
     // Coords must be lineSpace-local
     function coordsChar(x, y) {
       var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
       if (heightPos < 0) return {line: 0, ch: 0};
       var lineNo = lineAtHeight(doc, heightPos);
       if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc.size - 1).text.length};
       var lineObj = getLine(lineNo), text = lineObj.text;
       var tw = options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0;
       if (x <= 0 && innerOff == 0) return {line: lineNo, ch: 0};
       var wrongLine = false;
       function getX(len) {
         var sp = measureLine(lineObj, len);
         if (tw) {
           var off = Math.round(sp.top / th);
           wrongLine = off != innerOff;
           return Math.max(0, sp.left + (off - innerOff) * scroller.clientWidth);
+        }
         return sp.left;
+      }
       var from = 0, fromX = 0, to = text.length, toX;
       // Guess a suitable upper bound for our search.
       var estimated = Math.min(to, Math.ceil((x + innerOff * scroller.clientWidth * .9) / cw));
       for (;;) {
         var estX = getX(estimated);
         if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
         else {toX = estX; to = estimated; break;}
+      }
       if (x > toX) return {line: lineNo, ch: to};
       // Try to guess a suitable lower bound as well.
       estimated = Math.floor(to * 0.8); estX = getX(estimated);
       if (estX < x) {from = estimated; fromX = estX;}
       // Do a binary search between these bounds.
       for (;;) {
         if (to - from <= 1) {
           var after = x - fromX < toX - x;
           return {line: lineNo, ch: after ? from : to, after: after};
+        }
         var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
         if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; }
         else {from = middle; fromX = middleX;}
       node.style.top = (top + paddingTop(display)) + "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";
+      }
+    }
     function pageCoords(pos) {
       var local = localCoords(pos, true), off = eltOffset(lineSpace);
       return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
+    }
     var cachedHeight, cachedHeightFor, measurePre;
     function textHeight() {
       if (measurePre == null) {
         measurePre = elt("pre");
         for (var i = 0; i < 49; ++i) {
           measurePre.appendChild(document.createTextNode("x"));
           measurePre.appendChild(elt("br"));
+        }
         measurePre.appendChild(document.createTextNode("x"));
       if (scroll)
         scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
     },
     triggerOnKeyDown: operation(null, onKeyDown),
     execCommand: function(cmd) {return commands[cmd](this);},
     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;
+      }
       var offsetHeight = lineDiv.clientHeight;
       if (offsetHeight == cachedHeightFor) return cachedHeight;
       cachedHeightFor = offsetHeight;
       removeChildrenAndAdd(measure, measurePre.cloneNode(true));
       cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
       removeChildren(measure);
       return cachedHeight;
+    }
     var cachedWidth, cachedWidthFor = 0;
     function charWidth() {
       if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
       cachedWidthFor = scroller.clientWidth;
       var anchor = elt("span", "x");
       var pre = elt("pre", [anchor]);
       removeChildrenAndAdd(measure, pre);
       return (cachedWidth = anchor.offsetWidth || 10);
+    }
     function paddingTop() {return lineSpace.offsetTop;}
     function paddingLeft() {return lineSpace.offsetLeft;}
     function posFromMouse(e, liberal) {
       var offW = eltOffset(scroller, true), x, y;
       // Fails unpredictably on IE[67] when mouse is dragged around quickly.
       try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
       // This is a mess of a heuristic to try and determine whether a
       // scroll-bar was clicked or not, and to return null if one was
       // (and !liberal).
       if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight))
         return null;
       var offL = eltOffset(lineSpace, true);
       return coordsChar(x - offL.left, y - offL.top);
+    }
     var detectingSelectAll;
     function onContextMenu(e) {
       var pos = posFromMouse(e), scrollPos = scrollbar.scrollTop;
       if (!pos || opera) return; // Opera is difficult.
       if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
         operation(setCursor)(pos.line, pos.ch);
       var oldCSS = input.style.cssText;
       inputDiv.style.position = "absolute";
       input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
         "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " +
         "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
       focusInput();
       resetInput(true);
       // Adds "Select all" to context menu in FF
       if (posEq(sel.from, sel.to)) input.value = prevInput = " ";
       function rehide() {
         inputDiv.style.position = "relative";
         input.style.cssText = oldCSS;
         if (ie_lt9) scrollbar.scrollTop = scrollPos;
         slowPoll();
         // Try to detect the user choosing select-all
         if (input.selectionStart != null) {
           clearTimeout(detectingSelectAll);
           var extval = input.value = " " + (posEq(sel.from, sel.to) ? "" : input.value), i = 0;
           prevInput = " ";
           input.selectionStart = 1; input.selectionEnd = extval.length;
           detectingSelectAll = setTimeout(function poll(){
             if (prevInput == " " && input.selectionStart == 0)
               operation(commands.selectAll)(instance);
             else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
             else resetInput();
           }, 200);
+        }
+      }
       if (gecko) {
         e_stop(e);
         var mouseup = connect(window, "mouseup", function() {
           mouseup();
           setTimeout(rehide, 20);
         }, true);
       } else {
         setTimeout(rehide, 50);
       return cur;
     },
     moveH: operation(null, function(dir, unit) {
       var sel = this.doc.sel, pos;
       if (sel.shift || sel.extend || posEq(sel.from, sel.to))
         pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually);
       else
         pos = dir < 0 ? sel.from : sel.to;
       extendSelection(this.doc, pos, pos, dir);
     }),
     deleteH: operation(null, function(dir, unit) {
       var sel = this.doc.sel;
       if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete");
       else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete");
       this.curOp.userSelChange = true;
     }),
     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;
+      }
+    }
     // Cursor-blinking
     function restartBlink() {
       clearInterval(blinker);
       var on = true;
       cursor.style.visibility = "";
       blinker = setInterval(function() {
         cursor.style.visibility = (on = !on) ? "" : "hidden";
       }, options.cursorBlinkRate);
+    }
     var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
     function matchBrackets(autoclear) {
       var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1;
       var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
       if (!match) return;
       var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
       for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
         if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
       var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
       function scan(line, from, to) {
         if (!line.text) return;
         var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
         for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
           var text = st[i];
           if (st[i+1] != style) {pos += d * text.length; continue;}
           for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
             if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
               var match = matching[cur];
               if (match.charAt(1) == ">" == forward) stack.push(cur);
               else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
               else if (!stack.length) return {pos: pos, match: true};
+            }
+          }
+        }
+      }
       for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) {
         var line = getLine(i), first = i == head.line;
         var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
         if (found) break;
+      }
       if (!found) found = {pos: null, match: false};
       var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
       var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
           two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
       var clear = operation(function(){one.clear(); two && two.clear();});
       if (autoclear) setTimeout(clear, 800);
       else bracketHighlighted = clear;
+    }
     // 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(n) {
       var minindent, minline;
       for (var search = n, lim = n - 40; search > lim; --search) {
         if (search == 0) return 0;
         var line = getLine(search-1);
         if (line.stateAfter) return search;
         var indented = line.indentation(options.tabSize);
         if (minline == null || minindent > indented) {
           minline = search - 1;
           minindent = indented;
+        }
       return cur;
     },
     moveV: operation(null, function(dir, unit) {
       var sel = this.doc.sel;
       var pos = cursorCoords(this, sel.head, "div");
       if (sel.goalColumn != null) pos.left = sel.goalColumn;
       var target = findPosV(this, pos, dir, unit);
       if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top);
       extendSelection(this.doc, target, target, dir);
       sel.goalColumn = pos.left;
     }),
     toggleOverwrite: function() {
       if (this.state.overwrite = !this.state.overwrite)
         this.display.cursor.className += " CodeMirror-overwrite";
       else
         this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
     },
     hasFocus: function() { return this.state.focused; },
     scrollTo: operation(null, function(x, y) {
       updateScrollPos(this, x, y);
     }),
     getScrollInfo: function() {
       var scroller = this.display.scroller, co = scrollerCutOff;
       return {left: scroller.scrollLeft, top: scroller.scrollTop,
               height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
               clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
     },
     scrollIntoView: operation(null, function(pos, margin) {
       if (typeof pos == "number") pos = Pos(pos, 0);
       if (!margin) margin = 0;
       var coords = pos;
       if (!pos || pos.line != null) {
         this.curOp.scrollToPos = pos ? clipPos(this.doc, pos) : this.doc.sel.head;
         this.curOp.scrollToPosMargin = margin;
         coords = cursorCoords(this, this.curOp.scrollToPos);
+      }
       return minline;
+    }
     function getStateBefore(n) {
       var pos = findStartLine(n), state = pos && getLine(pos-1).stateAfter;
       if (!state) state = startState(mode);
       else state = copyState(mode, state);
       doc.iter(pos, n, function(line) {
         line.process(mode, state, options.tabSize);
         line.stateAfter = (pos == n - 1 || pos % 5 == 0) ? copyState(mode, state) : null;
       });
       return state;
+    }
     function highlightWorker() {
       if (frontier >= showingTo) return;
       var end = +new Date + options.workTime, state = copyState(mode, getStateBefore(frontier));
       var startFrontier = frontier;
       doc.iter(frontier, showingTo, function(line) {
         if (frontier >= showingFrom) { // Visible
           line.highlight(mode, state, options.tabSize);
           line.stateAfter = copyState(mode, state);
         } else {
           line.process(mode, state, options.tabSize);
           line.stateAfter = frontier % 5 == 0 ? copyState(mode, state) : null;
+        }
         ++frontier;
         if (+new Date > end) {
           startWorker(options.workDelay);
           return true;
+        }
       });
       if (showingTo > startFrontier && frontier >= showingFrom)
         operation(function() {changes.push({from: startFrontier, to: frontier});})();
+    }
     function startWorker(time) {
       if (frontier < showingTo)
         highlight.set(time, highlightWorker);
+    }
     // Operations are used to wrap changes in such a way that each
     // change won't have to update the cursor and display (which would
     // be awkward, slow, and error-prone), but instead updates are
     // batched and then all combined and executed at once.
     function startOperation() {
       updateInput = userSelChange = textChanged = null;
       changes = []; selectionChanged = false; callbacks = [];
+    }
     function endOperation() {
       if (updateMaxLine) computeMaxLength();
       if (maxLineChanged && !options.lineWrapping) {
         var cursorWidth = widthForcer.offsetWidth, left = measureLine(maxLine, maxLine.text.length).left;
         if (!ie_lt8) {
           widthForcer.style.left = left + "px";
           lineSpace.style.minWidth = (left + cursorWidth) + "px";
+        }
         maxLineChanged = false;
       var sPos = calculateScrollPos(this, coords.left, coords.top - margin, coords.right, coords.bottom + margin);
       updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop);
     }),
     setSize: function(width, height) {
       function interpret(val) {
         return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
+      }
       var newScrollPos, updated;
       if (selectionChanged) {
         var coords = calculateCursorCoords();
         newScrollPos = calculateScrollPos(coords.x, coords.y, coords.x, coords.yBot);
+      }
       if (changes.length || newScrollPos && newScrollPos.scrollTop != null)
         updated = updateDisplay(changes, true, newScrollPos && newScrollPos.scrollTop);
       if (!updated) {
         if (selectionChanged) updateSelection();
         if (gutterDirty) updateGutter();
+      }
       if (newScrollPos) scrollCursorIntoView();
       if (selectionChanged) restartBlink();
       if (focused && (updateInput === true || (updateInput !== false && selectionChanged)))
         resetInput(userSelChange);
       if (selectionChanged && options.matchBrackets)
         setTimeout(operation(function() {
           if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
           if (posEq(sel.from, sel.to)) matchBrackets(false);
         }), 20);
       var sc = selectionChanged, cbs = callbacks; // these can be reset by callbacks
       if (textChanged && options.onChange && instance)
         options.onChange(instance, textChanged);
       if (sc && options.onCursorActivity)
         options.onCursorActivity(instance);
       for (var i = 0; i < cbs.length; ++i) cbs[i](instance);
       if (updated && options.onUpdate) options.onUpdate(instance);
+    }
     var nestedOperation = 0;
     function operation(f) {
       return function() {
         if (!nestedOperation++) startOperation();
         try {var result = f.apply(this, arguments);}
         finally {if (!--nestedOperation) endOperation();}
         return result;
       };
+    }
     function compoundChange(f) {
       history.startCompound();
       try { return f(); } finally { history.endCompound(); }
+    }
     for (var ext in extensions)
       if (extensions.propertyIsEnumerable(ext) &&
           !instance.propertyIsEnumerable(ext))
         instance[ext] = extensions[ext];
     for (var i = 0; i < initHooks.length; ++i) initHooks[i](instance);
     return instance;
   } // (end of function CodeMirror)
       if (width != null) this.display.wrapper.style.width = interpret(width);
       if (height != null) this.display.wrapper.style.height = interpret(height);
       this.refresh();
     },
     on: function(type, f) {on(this, type, f);},
     off: function(type, f) {off(this, type, f);},
     operation: function(f){return runInOp(this, f);},
     refresh: operation(null, function() {
       clearCaches(this);
       updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop);
       regChange(this);
     }),
     swapDoc: operation(null, function(doc) {
       var old = this.doc;
       old.cm = null;
       attachDoc(this, doc);
       clearCaches(this);
       resetInput(this, true);
       updateScrollPos(this, doc.scrollLeft, doc.scrollTop);
       return old;
     }),
     getInputField: function(){return this.display.input;},
     getWrapperElement: function(){return this.display.wrapper;},
     getScrollerElement: function(){return this.display.scroller;},
     getGutterElement: function(){return this.display.gutters;}
   };
   // OPTION DEFAULTS
   var optionHandlers = CodeMirror.optionHandlers = {};
   // The default configuration options.
   CodeMirror.defaults = {
     value: "",
     mode: null,
     theme: "default",
     indentUnit: 2,
     indentWithTabs: false,
     smartIndent: true,
     tabSize: 4,
     keyMap: "default",
     extraKeys: null,
     electricChars: true,
     autoClearEmptyLines: false,
     onKeyEvent: null,
     onDragEvent: null,
     lineWrapping: false,
     lineNumbers: false,
     gutter: false,
     fixedGutter: false,
     firstLineNumber: 1,
     readOnly: false,
     dragDrop: true,
     onChange: null,
     onCursorActivity: null,
     onViewportChange: null,
     onGutterClick: null,
     onUpdate: null,
     onFocus: null, onBlur: null, onScroll: null,
     matchBrackets: false,
     cursorBlinkRate: 530,
     workTime: 100,
     workDelay: 200,
     pollInterval: 100,
     undoDepth: 40,
     tabindex: null,
     autofocus: null,
     lineNumberFormatter: function(integer) { return integer; }
   };
   var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
   var mac = ios || /Mac/.test(navigator.platform);
   var win = /Win/.test(navigator.platform);
   var defaults = CodeMirror.defaults = {};
   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;
+  }
   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) {
     loadMode(cm);
     clearCaches(cm);
     regChange(cm);
   }, true);
   option("electricChars", true);
   option("rtlMoveVisually", !windows);
   option("theme", "default", function(cm) {
     themeChanged(cm);
     guttersChanged(cm);
   }, true);
   option("keyMap", "default", keyMapChanged);
   option("extraKeys", null);
   option("onKeyEvent", null);
   option("onDragEvent", 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("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("readOnly", false, function(cm, val) {
     if (val == "nocursor") {onBlur(cm); cm.display.input.blur();}
     else if (!val) resetInput(cm, true);
   });
   option("dragDrop", true);
   option("cursorBlinkRate", 530);
   option("cursorHeight", 1);
   option("workTime", 100);
   option("workDelay", 100);
   option("flattenSpans", true);
   option("pollInterval", 100);
   option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;});
   option("historyEventDelay", 500);
   option("viewportMargin", 10, function(cm){cm.refresh();}, true);
   option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true);
   option("moveInputWithCursor", true, function(cm, val) {
     if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
   });
   option("tabindex", null, function(cm, val) {
     cm.display.input.tabIndex = val || "";
   });
   option("autofocus", null);
   // MODE DEFINITION AND QUERYING
   // Known modes, by name and by MIME
   var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
   CodeMirror.defineMode = function(name, mode) {
     if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
     if (arguments.length > 2) {
@@ @@ -2042,9 +3157,11 @@ window.CodeMirror = (function() { @@
+    }
     modes[name] = mode;
   };
   CodeMirror.defineMIME = function(mime, spec) {
     mimeModes[mime] = spec;
   };
   CodeMirror.resolveMode = function(spec) {
     if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
       spec = mimeModes[spec];
@@ @@ -2053,228 +3170,49 @@ window.CodeMirror = (function() { @@
     if (typeof spec == "string") return {name: spec};
     else return spec || {name: "null"};
   };
   CodeMirror.getMode = function(options, spec) {
-    var spec = CodeMirror.resolveMode(spec);
     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)) modeObj[prop] = exts[prop];
       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;
     return modeObj;
   };
   CodeMirror.listModes = function() {
     var list = [];
     for (var m in modes)
       if (modes.propertyIsEnumerable(m)) list.push(m);
     return list;
   };
   CodeMirror.listMIMEs = function() {
     var list = [];
     for (var m in mimeModes)
       if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]});
     return list;
   };
   var extensions = CodeMirror.extensions = {};
   CodeMirror.defineExtension = function(name, func) {
     extensions[name] = func;
   };
   var initHooks = [];
   CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
   CodeMirror.defineMode("null", function() {
     return {token: function(stream) {stream.skipToEnd();}};
   });
   CodeMirror.defineMIME("text/plain", "null");
   var modeExtensions = CodeMirror.modeExtensions = {};
   CodeMirror.extendMode = function(mode, properties) {
     var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
     for (var prop in properties) if (properties.hasOwnProperty(prop))
       exts[prop] = properties[prop];
     copyObj(properties, exts);
   };
   var commands = CodeMirror.commands = {
     selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
     killLine: function(cm) {
       var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
       if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, {line: from.line + 1, ch: 0});
       else cm.replaceRange("", from, sel ? to : {line: from.line});
     },
     deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
     undo: function(cm) {cm.undo();},
     redo: function(cm) {cm.redo();},
     goDocStart: function(cm) {cm.setCursor(0, 0, true);},
     goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
     goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);},
     goLineStartSmart: function(cm) {
       var cur = cm.getCursor();
       var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/));
       cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);
     },
     goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);},
     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");},
     goWordRight: function(cm) {cm.moveH(1, "word");},
     delCharLeft: function(cm) {cm.deleteH(-1, "char");},
     delCharRight: function(cm) {cm.deleteH(1, "char");},
     delWordLeft: function(cm) {cm.deleteH(-1, "word");},
     delWordRight: function(cm) {cm.deleteH(1, "word");},
     indentAuto: function(cm) {cm.indentSelection("smart");},
     indentMore: function(cm) {cm.indentSelection("add");},
     indentLess: function(cm) {cm.indentSelection("subtract");},
     insertTab: function(cm) {cm.replaceSelection("\t", "end");},
     defaultTab: function(cm) {
       if (cm.somethingSelected()) cm.indentSelection("add");
       else cm.replaceSelection("\t", "end");
     },
     transposeChars: function(cm) {
       var cur = cm.getCursor(), line = cm.getLine(cur.line);
       if (cur.ch > 0 && cur.ch < line.length - 1)
         cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
                         {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
     },
     newlineAndIndent: function(cm) {
       cm.replaceSelection("\n", "end");
       cm.indentLine(cm.getCursor().line);
     },
     toggleOverwrite: function(cm) {cm.toggleOverwrite();}
   };
   var keyMap = CodeMirror.keyMap = {};
   keyMap.basic = {
     "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
     "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
     "Delete": "delCharRight", "Backspace": "delCharLeft", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
     "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
   };
   // Note that the save and find-related commands aren't defined by
   // default. 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", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
     "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
     "Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "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",
     fallthrough: "basic"
   };
   keyMap.macDefault = {
     "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
     "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
     "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft",
     "Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "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",
     fallthrough: ["basic", "emacsy"]
   };
   keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
   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": "delCharRight", "Ctrl-H": "delCharLeft",
     "Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
   // EXTENSIONS
   CodeMirror.defineExtension = function(name, func) {
     CodeMirror.prototype[name] = func;
   };
   function getKeyMap(val) {
     if (typeof val == "string") return keyMap[val];
     else return val;
+  }
   function lookupKey(name, extraMap, map, handle, stop) {
     function lookup(map) {
       map = getKeyMap(map);
       var found = map[name];
       if (found === false) {
         if (stop) stop();
         return true;
+      }
       if (found != null && handle(found)) return true;
       if (map.nofallthrough) {
         if (stop) stop();
         return true;
+      }
       var fallthrough = map.fallthrough;
       if (fallthrough == null) return false;
       if (Object.prototype.toString.call(fallthrough) != "[object Array]")
         return lookup(fallthrough);
       for (var i = 0, e = fallthrough.length; i < e; ++i) {
         if (lookup(fallthrough[i])) return true;
+      }
       return false;
+    }
     if (extraMap && lookup(extraMap)) return true;
     return lookup(map);
+  }
   function isModifierKey(event) {
     var name = keyNames[e_prop(event, "keyCode")];
     return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
+  }
   CodeMirror.isModifierKey = isModifierKey;
   CodeMirror.fromTextArea = function(textarea, options) {
     if (!options) options = {};
     options.value = textarea.value;
     if (!options.tabindex && textarea.tabindex)
       options.tabindex = textarea.tabindex;
     // 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 = document.body;
       // doc.activeElement occasionally throws on IE
       try { hasFocus = document.activeElement; } catch(e) {}
       options.autofocus = hasFocus == textarea ||
         textarea.getAttribute("autofocus") != null && hasFocus == document.body;
+    }
     function save() {textarea.value = instance.getValue();}
     if (textarea.form) {
       // Deplorable hack to make the submit method do the right thing.
       var rmSubmit = connect(textarea.form, "submit", save, true);
       var realSubmit = textarea.form.submit;
       textarea.form.submit = function wrappedSubmit() {
         save();
         textarea.form.submit = realSubmit;
         textarea.form.submit();
         textarea.form.submit = wrappedSubmit;
       };
+    }
     textarea.style.display = "none";
     var instance = CodeMirror(function(node) {
       textarea.parentNode.insertBefore(node, textarea.nextSibling);
     }, options);
     instance.save = save;
     instance.getTextArea = function() { return textarea; };
     instance.toTextArea = function() {
       save();
       textarea.parentNode.removeChild(instance.getWrapperElement());
       textarea.style.display = "";
       if (textarea.form) {
         rmSubmit();
         if (typeof textarea.form.submit == "function")
           textarea.form.submit = realSubmit;
+      }
     };
     return instance;
   CodeMirror.defineDocExtension = function(name, func) {
     Doc.prototype[name] = func;
   };
   var gecko = /gecko\/\d{7}/i.test(navigator.userAgent);
   var ie = /MSIE \d/.test(navigator.userAgent);
   var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
   var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
   var quirksMode = ie && document.documentMode == 5;
   var webkit = /WebKit\//.test(navigator.userAgent);
   var chrome = /Chrome\//.test(navigator.userAgent);
   var opera = /Opera\//.test(navigator.userAgent);
   var safari = /Apple Computer/.test(navigator.vendor);
   var khtml = /KHTML\//.test(navigator.userAgent);
   var mac_geLion = /Mac OS X 10\D([7-9]|\d\d)\D/.test(navigator.userAgent);
   CodeMirror.defineOption = option;
   var initHooks = [];
   CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
   // MODE STATE HANDLING
   // Utility functions for working with state. Exported because modes
   // sometimes need to do this.
@@ @@ -2290,10 +3228,12 @@ window.CodeMirror = (function() { @@
     return nstate;
+  }
   CodeMirror.copyState = copyState;
   function startState(mode, a1, a2) {
     return mode.startState ? mode.startState(a1, a2) : true;
+  }
   CodeMirror.startState = startState;
   CodeMirror.innerMode = function(mode, state) {
     while (mode.innerMode) {
       var info = mode.innerMode(state);
@@ @@ -2303,12 +3243,243 @@ window.CodeMirror = (function() { @@
     return info || {mode: mode, state: state};
   };
   // STANDARD COMMANDS
   var commands = CodeMirror.commands = {
     selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));},
     killLine: function(cm) {
       var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
       if (!sel && cm.getLine(from.line).length == from.ch)
         cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete");
       else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete");
     },
     deleteLine: function(cm) {
       var l = cm.getCursor().line;
       cm.replaceRange("", Pos(l, 0), Pos(l), "+delete");
     },
     undo: function(cm) {cm.undo();},
     redo: function(cm) {cm.redo();},
     goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
     goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
     goLineStart: function(cm) {
       cm.extendSelection(lineStart(cm, cm.getCursor().line));
     },
     goLineStartSmart: function(cm) {
       var cur = cm.getCursor(), start = lineStart(cm, cur.line);
       var line = cm.getLineHandle(start.line);
       var order = getOrder(line);
       if (!order || order[0].level == 0) {
         var firstNonWS = Math.max(0, line.text.search(/\S/));
         var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
         cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS));
       } else cm.extendSelection(start);
     },
     goLineEnd: function(cm) {
       cm.extendSelection(lineEnd(cm, cm.getCursor().line));
     },
     goLineRight: function(cm) {
       var top = cm.charCoords(cm.getCursor(), "div").top + 5;
       cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"));
     },
     goLineLeft: function(cm) {
       var top = cm.charCoords(cm.getCursor(), "div").top + 5;
       cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div"));
     },
     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", "end", "+input");},
     defaultTab: function(cm) {
       if (cm.somethingSelected()) cm.indentSelection("add");
       else cm.replaceSelection("\t", "end", "+input");
     },
     transposeChars: function(cm) {
       var cur = cm.getCursor(), line = cm.getLine(cur.line);
       if (cur.ch > 0 && cur.ch < line.length - 1)
         cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
                         Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
     },
     newlineAndIndent: function(cm) {
       operation(cm, function() {
         cm.replaceSelection("\n", "end", "+input");
         cm.indentLine(cm.getCursor().line, null, true);
       })();
     },
     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", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
     "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
   };
   // Note that the save and find-related commands aren't defined by
   // default. 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", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
     "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",
     fallthrough: "basic"
   };
   keyMap.macDefault = {
     "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
     "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
     "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "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",
     fallthrough: ["basic", "emacsy"]
   };
   keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
   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 DISPATCH
   function getKeyMap(val) {
     if (typeof val == "string") return keyMap[val];
     else return val;
+  }
   function lookupKey(name, maps, handle) {
     function lookup(map) {
       map = getKeyMap(map);
       var found = map[name];
       if (found === false) return "stop";
       if (found != null && handle(found)) return true;
       if (map.nofallthrough) return "stop";
       var fallthrough = map.fallthrough;
       if (fallthrough == null) return false;
       if (Object.prototype.toString.call(fallthrough) != "[object Array]")
         return lookup(fallthrough);
       for (var i = 0, e = fallthrough.length; i < e; ++i) {
         var done = lookup(fallthrough[i]);
         if (done) return done;
+      }
       return false;
+    }
     for (var i = 0; i < maps.length; ++i) {
       var done = lookup(maps[i]);
       if (done) return done;
+    }
+  }
   function isModifierKey(event) {
     var name = keyNames[event.keyCode];
     return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
+  }
   function keyName(event, noShift) {
     if (opera && event.keyCode == 34 && event["char"]) return false;
     var name = keyNames[event.keyCode];
     if (name == null || event.altGraphKey) return false;
     if (event.altKey) name = "Alt-" + name;
     if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name;
     if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
     if (!noShift && event.shiftKey) name = "Shift-" + name;
     return name;
+  }
   CodeMirror.lookupKey = lookupKey;
   CodeMirror.isModifierKey = isModifierKey;
   CodeMirror.keyName = keyName;
   // FROMTEXTAREA
   CodeMirror.fromTextArea = function(textarea, options) {
     if (!options) 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 = document.body;
       // doc.activeElement occasionally throws on IE
       try { hasFocus = document.activeElement; } catch(e) {}
       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) {}
+      }
+    }
     textarea.style.display = "none";
     var cm = CodeMirror(function(node) {
       textarea.parentNode.insertBefore(node, textarea.nextSibling);
     }, options);
     cm.save = save;
     cm.getTextArea = function() { return textarea; };
     cm.toTextArea = function() {
       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;
+      }
     };
     return cm;
   };
   // STRING STREAM
   // Fed to the mode parsers, provides helper functions to make
   // parsers more succinct.
   // The character stream used by a mode's parser.
   function StringStream(string, tabSize) {
     this.pos = this.start = 0;
     this.string = string;
     this.tabSize = tabSize || 8;
+  }
     this.lastColumnPos = this.lastColumnValue = 0;
+  }
   StringStream.prototype = {
     eol: function() {return this.pos >= this.string.length;},
     sol: function() {return this.pos == 0;},
@@ @@ -2339,12 +3510,19 @@ window.CodeMirror = (function() { @@
       if (found > -1) {this.pos = found; return true;}
     },
     backUp: function(n) {this.pos -= n;},
     column: function() {return countColumn(this.string, this.start, this.tabSize);},
     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;
     },
     indentation: function() {return countColumn(this.string, null, this.tabSize);},
     match: function(pattern, consume, caseInsensitive) {
       if (typeof pattern == "string") {
         var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
         if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
         var substr = this.string.substr(this.pos, pattern.length);
         if (cased(substr) == cased(pattern)) {
           if (consume !== false) this.pos += pattern.length;
           return true;
+        }
@@ @@ -2359,9 +3537,195 @@ window.CodeMirror = (function() { @@
   };
   CodeMirror.StringStream = StringStream;
   function MarkedSpan(from, to, marker) {
     this.from = from; this.to = to; this.marker = marker;
+  }
   // TEXTMARKERS
   function TextMarker(doc, type) {
     this.lines = [];
     this.type = type;
     this.doc = doc;
+  }
   CodeMirror.TextMarker = TextMarker;
   TextMarker.prototype.clear = function() {
     if (this.explicitlyCleared) return;
     var cm = this.doc.cm, withOp = cm && !cm.curOp;
     if (withOp) startOperation(cm);
     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 (span.to != null) max = lineNo(line);
       line.markedSpans = removeMarkedSpan(line.markedSpans, span);
       if (span.from != null)
         min = lineNo(line);
       else if (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(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual);
       if (len > cm.display.maxLineLength) {
         cm.display.maxLine = visual;
         cm.display.maxLineLength = len;
         cm.display.maxLineChanged = true;
+      }
+    }
     if (min != null && cm) regChange(cm, min, max + 1);
     this.lines.length = 0;
     this.explicitlyCleared = true;
     if (this.collapsed && this.doc.cantEdit) {
       this.doc.cantEdit = false;
       if (cm) reCheckSelection(cm);
+    }
     if (withOp) endOperation(cm);
     signalLater(this, "clear");
   };
   TextMarker.prototype.find = function() {
     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 || span.to != null) {
         var found = lineNo(line);
         if (span.from != null) from = Pos(found, span.from);
         if (span.to != null) to = Pos(found, span.to);
+      }
+    }
     if (this.type == "bookmark") return from;
     return from && {from: from, to: to};
   };
   TextMarker.prototype.getOptions = function(copyWidget) {
     var repl = this.replacedWith;
     return {className: this.className,
             inclusiveLeft: this.inclusiveLeft, inclusiveRight: this.inclusiveRight,
             atomic: this.atomic,
             collapsed: this.collapsed,
             replacedWith: copyWidget ? repl && repl.cloneNode(true) : repl,
             readOnly: this.readOnly,
             startStyle: this.startStyle, endStyle: this.endStyle};
   };
   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);
+    }
   };
   function markText(doc, from, to, options, type) {
     if (options && options.shared) return markTextShared(doc, from, to, options, type);
     if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
     var marker = new TextMarker(doc, type);
     if (type == "range" && !posLess(from, to)) return marker;
     if (options) copyObj(options, marker);
     if (marker.replacedWith) {
       marker.collapsed = true;
       marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
+    }
     if (marker.collapsed) sawCollapsedSpans = true;
     if (marker.addToHistory)
       addToHistory(doc, {from: from, to: to, origin: "markText"},
                    {head: doc.sel.head, anchor: doc.sel.anchor}, NaN);
     var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine;
     doc.iter(curLine, to.line + 1, function(line) {
       if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine)
         updateMaxLine = true;
       var span = {from: null, to: null, marker: marker};
       size += line.text.length;
       if (curLine == from.line) {span.from = from.ch; size -= from.ch;}
       if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;}
       if (marker.collapsed) {
         if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch);
         if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch);
         else updateLineHeight(line, 0);
+      }
       addMarkedSpan(line, span);
       ++curLine;
     });
     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) {
       if (collapsedAtStart != collapsedAtEnd)
         throw new Error("Inserting collapsed marker overlapping an existing one");
       marker.size = size;
       marker.atomic = true;
+    }
     if (cm) {
       if (updateMaxLine) cm.curOp.updateMaxLine = true;
       if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed)
         regChange(cm, from.line, to.line + 1);
       if (marker.atomic) reCheckSelection(cm);
+    }
     return marker;
+  }
   // SHARED TEXTMARKERS
   function SharedTextMarker(markers, primary) {
     this.markers = markers;
     this.primary = primary;
     for (var i = 0, me = this; i < markers.length; ++i) {
       markers[i].parent = this;
       on(markers[i], "clear", function(){me.clear();});
+    }
+  }
   CodeMirror.SharedTextMarker = 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() {
     return this.primary.find();
   };
   SharedTextMarker.prototype.getOptions = function(copyWidget) {
     var inner = this.primary.getOptions(copyWidget);
     inner.shared = true;
     return inner;
   };
   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.replacedWith;
     linkedDocs(doc, function(doc) {
       if (widget) options.replacedWith = 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);
+  }
   // TEXTMARKER SPANS
   function getMarkedSpanFor(spans, marker) {
     if (spans) for (var i = 0; i < spans.length; ++i) {
@@ @@ -2369,19 +3733,21 @@ window.CodeMirror = (function() { @@
       if (span.marker == marker) return span;
+    }
+  }
   function removeMarkedSpan(spans, span) {
     var r;
     for (var i = 0; i < spans.length; ++i)
     for (var r, i = 0; i < spans.length; ++i)
       if (spans[i] != span) (r || (r = [])).push(spans[i]);
     return r;
+  }
   function markedSpansBefore(old, startCh, endCh) {
   function addMarkedSpan(line, span) {
     line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
     span.marker.attachLine(line);
+  }
   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 || marker.type == "bookmark" && span.from == startCh && span.from != endCh) {
+      if (startsBefore || marker.type == "bookmark" && span.from == startCh && (!isInsert || !span.marker.insertLeft)) {
         var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
         (nw || (nw = [])).push({from: span.from,
                                 to: endsAfter ? null : span.to,
@@ @@ -2391,11 +3757,11 @@ window.CodeMirror = (function() { @@
     return nw;
+  }
   function markedSpansAfter(old, endCh) {
+  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 || marker.type == "bookmark" && span.from == endCh) {
+      if (endsAfter || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) {
         var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
         (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
                                 to: span.to == null ? null : span.to - endCh,
@@ @@ -2405,14 +3771,18 @@ window.CodeMirror = (function() { @@
     return nw;
+  }
   function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) {
     if (!oldFirst && !oldLast) return newText;
   function stretchSpansOverChange(doc, change) {
     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 = posEq(change.from, change.to);
     // Get the spans that 'stick out' on both sides
     var first = markedSpansBefore(oldFirst, startCh);
     var last = markedSpansAfter(oldLast, endCh);
     var first = markedSpansBefore(oldFirst, startCh, isInsert);
     var last = markedSpansAfter(oldLast, endCh, isInsert);
     // Next, merge those two ends
-    var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0);
+    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) {
@@ @@ -2442,261 +3812,560 @@ window.CodeMirror = (function() { @@
+      }
+    }
-    var newMarkers = [newHL(newText[0], first)];
     var newMarkers = [first];
     if (!sameLine) {
       // Fill gap with whole-line-spans
-      var gap = newText.length - 2, gapMarkers;
+      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({from: null, to: null, marker: first[i].marker});
       for (var i = 0; i < gap; ++i)
         newMarkers.push(newHL(newText[i+1], gapMarkers));
       newMarkers.push(newHL(lst(newText), last));
         newMarkers.push(gapMarkers);
       newMarkers.push(last);
+    }
     return newMarkers;
+  }
   // hl stands for history-line, a data structure that can be either a
   // string (line without markers) or a {text, markedSpans} object.
   function hlText(val) { return typeof val == "string" ? val : val.text; }
   function hlSpans(val) {
     if (typeof val == "string") return null;
     var spans = val.markedSpans, out = null;
     for (var i = 0; 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;
+  }
   function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; }
   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;
+  }
   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();
       for (var j = 0; j < parts.length; ++j) {
         var p = parts[j];
         if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue;
         var newParts = [j, 1];
         if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from))
           newParts.push({from: p.from, to: m.from});
         if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to))
           newParts.push({from: m.to, to: p.to});
         parts.splice.apply(parts, newParts);
         j += newParts.length - 1;
+      }
+    }
     return parts;
+  }
   function collapsedSpanAt(line, ch) {
     var sps = sawCollapsedSpans && line.markedSpans, found;
     if (sps) for (var sp, i = 0; i < sps.length; ++i) {
       sp = sps[i];
       if (!sp.marker.collapsed) continue;
       if ((sp.from == null || sp.from < ch) &&
           (sp.to == null || sp.to > ch) &&
           (!found || found.width < sp.marker.width))
         found = sp.marker;
+    }
     return found;
+  }
   function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); }
   function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); }
   function visualLine(doc, line) {
     var merged;
     while (merged = collapsedSpanAtStart(line))
       line = getLine(doc, merged.find().from.line);
     return line;
+  }
   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.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().to, endLine = getLine(doc, end.line);
       return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.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.from == span.to &&
           (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
           lineIsHiddenInner(doc, line, sp)) return true;
+    }
+  }
   function detachMarkedSpans(line) {
     var spans = line.markedSpans;
     if (!spans) return;
     for (var i = 0; i < spans.length; ++i) {
       var lines = spans[i].marker.lines;
       var ix = indexOf(lines, line);
       lines.splice(ix, 1);
+    }
     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)
-      var marker = spans[i].marker.lines.push(line);
+      spans[i].marker.attachLine(line);
     line.markedSpans = spans;
+  }
   // When measuring the position of the end of a line, different
   // browsers require different approaches. If an empty span is added,
   // many browsers report bogus offsets. Of those, some (Webkit,
   // recent IE) will accept a space without moving the whole span to
   // the next line when wrapping it, others work with a zero-width
   // space.
   var eolSpanContent = " ";
   if (gecko || (ie && !ie_lt8)) eolSpanContent = "\u200b";
   else if (opera) eolSpanContent = "";
   // LINE WIDGETS
   var LineWidget = CodeMirror.LineWidget = function(cm, node, options) {
     for (var opt in options) if (options.hasOwnProperty(opt))
       this[opt] = options[opt];
     this.cm = cm;
     this.node = node;
   };
   function widgetOperation(f) {
     return function() {
       var withOp = !this.cm.curOp;
       if (withOp) startOperation(this.cm);
       try {var result = f.apply(this, arguments);}
       finally {if (withOp) endOperation(this.cm);}
       return result;
     };
+  }
   LineWidget.prototype.clear = widgetOperation(function() {
     var ws = this.line.widgets, no = lineNo(this.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) this.line.widgets = null;
     updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this)));
     regChange(this.cm, no, no + 1);
   });
   LineWidget.prototype.changed = widgetOperation(function() {
     var oldH = this.height;
     this.height = null;
     var diff = widgetHeight(this) - oldH;
     if (!diff) return;
     updateLineHeight(this.line, this.line.height + diff);
     var no = lineNo(this.line);
     regChange(this.cm, no, no + 1);
   });
   function widgetHeight(widget) {
     if (widget.height != null) return widget.height;
     if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1)
       removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
     return widget.height = widget.node.offsetHeight;
+  }
   function addLineWidget(cm, handle, node, options) {
     var widget = new LineWidget(cm, node, options);
     if (widget.noHScroll) cm.display.alignWidgets = true;
     changeLine(cm, handle, function(line) {
       (line.widgets || (line.widgets = [])).push(widget);
       widget.line = line;
       if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) {
         var aboveVisible = heightAtLine(cm, line) < cm.display.scroller.scrollTop;
         updateLineHeight(line, line.height + widgetHeight(widget));
         if (aboveVisible) addToScrollPos(cm, 0, widget.height);
+      }
       return true;
     });
     return widget;
+  }
   // LINE DATA STRUCTURE
   // Line objects. These hold state related to a line, including
   // highlighting info (the styles array).
   function Line(text, markedSpans) {
     this.text = text;
     this.height = 1;
     attachMarkedSpans(this, markedSpans);
+  }
   Line.prototype = {
     update: function(text, markedSpans) {
       this.text = text;
       this.stateAfter = this.styles = null;
       detachMarkedSpans(this);
       attachMarkedSpans(this, markedSpans);
     },
     // Run the given mode's parser over a line, update the styles
     // array, which contains alternating fragments of text and CSS
     // classes.
     highlight: function(mode, state, tabSize) {
       var stream = new StringStream(this.text, tabSize), st = this.styles || (this.styles = []);
       var pos = st.length = 0;
       if (this.text == "" && mode.blankLine) mode.blankLine(state);
       while (!stream.eol()) {
         var style = mode.token(stream, state), substr = stream.current();
         stream.start = stream.pos;
         if (pos && st[pos-1] == style) {
           st[pos-2] += substr;
         } else if (substr) {
           st[pos++] = substr; st[pos++] = style;
+        }
         // Give up when line is ridiculously long
         if (stream.pos > 5000) {
           st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
           break;
+        }
+      }
     },
     process: function(mode, state, tabSize) {
       var stream = new StringStream(this.text, tabSize);
       if (this.text == "" && mode.blankLine) mode.blankLine(state);
       while (!stream.eol() && stream.pos <= 5000) {
         mode.token(stream, state);
         stream.start = stream.pos;
   function makeLine(text, markedSpans, estimateHeight) {
     var line = {text: text};
     attachMarkedSpans(line, markedSpans);
     line.height = estimateHeight ? estimateHeight(line) : 1;
     return line;
+  }
   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);
+  }
   function cleanUpLine(line) {
     line.parent = null;
     detachMarkedSpans(line);
+  }
   // Run the given mode's parser over a line, update the styles
   // array, which contains alternating fragments of text and CSS
   // classes.
   function runMode(cm, text, mode, state, f) {
     var flattenSpans = mode.flattenSpans;
     if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
     var curText = "", curStyle = null;
     var stream = new StringStream(text, cm.options.tabSize), style;
     if (text == "" && mode.blankLine) mode.blankLine(state);
     while (!stream.eol()) {
       if (stream.pos > cm.options.maxHighlightLength) {
         flattenSpans = false;
         // Webkit seems to refuse to render text nodes longer than 57444 characters
         stream.pos = Math.min(text.length, stream.start + 50000);
         style = null;
       } else {
         style = mode.token(stream, state);
+      }
     },
     // Fetch the parser token for a given character. Useful for hacks
     // that want to inspect the mode state (say, for completion).
     getTokenAt: function(mode, state, tabSize, ch) {
       var txt = this.text, stream = new StringStream(txt, tabSize);
       while (stream.pos < ch && !stream.eol()) {
         stream.start = stream.pos;
         var style = mode.token(stream, state);
+      }
       return {start: stream.start,
               end: stream.pos,
               string: stream.current(),
               className: style || null,
               state: state};
     },
     indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},
     // Produces an HTML fragment for the line, taking selection,
     // marking, and highlighting into account.
     getContent: function(tabSize, wrapAt, compensateForWrapping) {
       var first = true, col = 0, specials = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g;
       var pre = elt("pre");
       function span_(html, text, style) {
         if (!text) return;
         // Work around a bug where, in some compat modes, IE ignores leading spaces
         if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1);
         first = false;
         if (!specials.test(text)) {
           col += text.length;
           var content = document.createTextNode(text);
       var substr = stream.current();
       stream.start = stream.pos;
       if (!flattenSpans || curStyle != style) {
         if (curText) f(curText, curStyle);
         curText = substr; curStyle = style;
       } else curText = curText + substr;
+    }
     if (curText) f(curText, curStyle);
+  }
   function highlightLine(cm, line, state) {
     // 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];
     // Compute the base array of styles
     runMode(cm, line.text, cm.doc.mode, state, function(txt, style) {st.push(txt, style);});
     // Run overlays, adjust style array.
     for (var o = 0; o < cm.state.overlays.length; ++o) {
       var overlay = cm.state.overlays[o], i = 1;
       runMode(cm, line.text, overlay.mode, true, function(txt, style) {
         var start = i, len = txt.length;
         // Ensure there's a token end at the current position, and that i points at it
         while (len) {
           var cur = st[i], len_ = cur.length;
           if (len_ <= len) {
             len -= len_;
           } else {
             st.splice(i, 1, cur.slice(0, len), st[i+1], cur.slice(len));
             len = 0;
+          }
           i += 2;
+        }
         if (!style) return;
         if (overlay.opaque) {
           st.splice(start, i - start, txt, style);
           i = start + 2;
         } else {
           var content = document.createDocumentFragment(), pos = 0;
           while (true) {
             specials.lastIndex = pos;
             var m = specials.exec(text);
             var skipped = m ? m.index - pos : text.length - pos;
             if (skipped) {
               content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
               col += skipped;
+            }
             if (!m) break;
             pos += skipped + 1;
             if (m[0] == "\t") {
               var tabWidth = tabSize - col % tabSize;
               content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
               col += tabWidth;
             } else {
               var token = elt("span", "\u2022", "cm-invalidchar");
               token.title = "\\u" + m[0].charCodeAt(0).toString(16);
               content.appendChild(token);
               col += 1;
+            }
           for (; start < i; start += 2) {
             var cur = st[start+1];
             st[start+1] = cur ? cur + " " + style : style;
+          }
+        }
         if (style) html.appendChild(elt("span", [content], style));
         else html.appendChild(content);
+      }
       var span = span_;
       if (wrapAt != null) {
         var outPos = 0, anchor = pre.anchor = elt("span");
         span = function(html, text, style) {
           var l = text.length;
           if (wrapAt >= outPos && wrapAt < outPos + l) {
             var cut = wrapAt - outPos;
             if (cut) {
               span_(html, text.slice(0, cut), style);
               // See comment at the definition of spanAffectsWrapping
               if (compensateForWrapping) {
                 var view = text.slice(cut - 1, cut + 1);
                 if (spanAffectsWrapping.test(view)) html.appendChild(elt("wbr"));
                 else if (!ie_lt8 && /\w\w/.test(view)) html.appendChild(document.createTextNode("\u200d"));
+              }
+            }
             html.appendChild(anchor);
             span_(anchor, opera ? text.slice(cut, cut + 1) : text.slice(cut), style);
             if (opera) span_(html, text.slice(cut + 1), style);
             wrapAt--;
             outPos += l;
           } else {
             outPos += l;
             span_(html, text, style);
             if (outPos == wrapAt && outPos == len) {
               setTextContent(anchor, eolSpanContent);
               html.appendChild(anchor);
+            }
             // Stop outputting HTML when gone sufficiently far beyond measure
             else if (outPos > wrapAt + 10 && /\s/.test(text)) span = function(){};
+          }
         };
+      }
       var st = this.styles, allText = this.text, marked = this.markedSpans;
       var len = allText.length;
       function styleToClass(style) {
         if (!style) return null;
         return "cm-" + style.replace(/ +/g, " cm-");
       });
+    }
     return st;
+  }
   function getLineStyles(cm, line) {
     if (!line.styles || line.styles[0] != cm.state.modeGen)
       line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
     return line.styles;
+  }
   // Lightweight form of highlight -- proceed over this line and
   // update state, but don't save a style array.
   function processLine(cm, line, state) {
     var mode = cm.doc.mode;
     var stream = new StringStream(line.text, cm.options.tabSize);
     if (line.text == "" && mode.blankLine) mode.blankLine(state);
     while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
       mode.token(stream, state);
       stream.start = stream.pos;
+    }
+  }
   var styleToClassCache = {};
   function styleToClass(style) {
     if (!style) return null;
     return styleToClassCache[style] ||
       (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-"));
+  }
   function lineContent(cm, realLine, measure) {
     var merged, line = realLine, lineBefore, sawBefore, simple = true;
     while (merged = collapsedSpanAtStart(line)) {
       simple = false;
       line = getLine(cm.doc, merged.find().from.line);
       if (!lineBefore) lineBefore = line;
+    }
     var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure,
                    measure: null, addedOne: false, cm: cm};
     if (line.textClass) builder.pre.className = line.textClass;
     do {
       builder.measure = line == realLine && measure;
       builder.pos = 0;
       builder.addToken = builder.measure ? buildTokenMeasure : buildToken;
       if ((ie || webkit) && cm.getOption("lineWrapping"))
         builder.addToken = buildTokenSplitSpaces(builder.addToken);
       if (measure && sawBefore && line != realLine && !builder.addedOne) {
         measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure));
         builder.addedOne = true;
+      }
       if (!allText && wrapAt == null) {
         span(pre, " ");
       } else if (!marked || !marked.length) {
         for (var i = 0, ch = 0; ch < len; i+=2) {
           var str = st[i], style = st[i+1], l = str.length;
           if (ch + l > len) str = str.slice(0, len - ch);
           ch += l;
           span(pre, str, styleToClass(style));
       var next = insertLineContent(line, builder, getLineStyles(cm, line));
       sawBefore = line == lineBefore;
       if (next) {
         line = getLine(cm.doc, next.to.line);
         simple = false;
+      }
     } while (next);
     if (measure && !builder.addedOne)
       measure[0] = builder.pre.appendChild(simple ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure));
     if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine))
       builder.pre.appendChild(document.createTextNode("\u00a0"));
     var order;
     // Work around problem with the reported dimensions of single-char
     // direction spans on IE (issue #1129). See also the comment in
     // cursorCoords.
     if (measure && ie && (order = getOrder(line))) {
       var l = order.length - 1;
       if (order[l].from == order[l].to) --l;
       var last = order[l], prev = order[l - 1];
       if (last.from + 1 == last.to && prev && last.level < prev.level) {
         var span = measure[builder.pos - 1];
         if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure),
                                                span.nextSibling);
+      }
+    }
     signal(cm, "renderLine", cm, realLine, builder.pre);
     return builder.pre;
+  }
   var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g;
   function buildToken(builder, text, style, startStyle, endStyle) {
     if (!text) return;
     if (!tokenSpecialChars.test(text)) {
       builder.col += text.length;
       var content = document.createTextNode(text);
     } else {
       var content = document.createDocumentFragment(), pos = 0;
       while (true) {
         tokenSpecialChars.lastIndex = pos;
         var m = tokenSpecialChars.exec(text);
         var skipped = m ? m.index - pos : text.length - pos;
         if (skipped) {
           content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
           builder.col += skipped;
+        }
       } else {
         marked.sort(function(a, b) { return a.from - b.from; });
         var pos = 0, i = 0, text = "", style, sg = 0;
         var nextChange = marked[0].from || 0, marks = [], markpos = 0;
         var advanceMarks = function() {
           var m;
           while (markpos < marked.length &&
                  ((m = marked[markpos]).from == pos || m.from == null)) {
             if (m.marker.type == "range") marks.push(m);
             ++markpos;
+          }
           nextChange = markpos < marked.length ? marked[markpos].from : Infinity;
           for (var i = 0; i < marks.length; ++i) {
             var to = marks[i].to;
             if (to == null) to = Infinity;
             if (to == pos) marks.splice(i--, 1);
             else nextChange = Math.min(to, nextChange);
+          }
         };
         var m = 0;
         while (pos < len) {
           if (nextChange == pos) advanceMarks();
           var upto = Math.min(len, nextChange);
           while (true) {
             if (text) {
               var end = pos + text.length;
               var appliedStyle = style;
               for (var j = 0; j < marks.length; ++j) {
                 var mark = marks[j];
                 appliedStyle = (appliedStyle ? appliedStyle + " " : "") + mark.marker.style;
                 if (mark.marker.endStyle && mark.to === Math.min(end, upto)) appliedStyle += " " + mark.marker.endStyle;
                 if (mark.marker.startStyle && mark.from === pos) appliedStyle += " " + mark.marker.startStyle;
+              }
               span(pre, end > upto ? text.slice(0, upto - pos) : text, appliedStyle);
               if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
               pos = end;
+            }
             text = st[i++]; style = styleToClass(st[i++]);
+          }
         if (!m) break;
         pos += skipped + 1;
         if (m[0] == "\t") {
           var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
           content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
           builder.col += tabWidth;
         } else {
           var token = elt("span", "\u2022", "cm-invalidchar");
           token.title = "\\u" + m[0].charCodeAt(0).toString(16);
           content.appendChild(token);
           builder.col += 1;
+        }
+      }
       return pre;
     },
     cleanUp: function() {
       this.parent = null;
       detachMarkedSpans(this);
+    }
   };
   // Data structure that holds the sequence of lines.
+    }
     if (style || startStyle || endStyle || builder.measure) {
       var fullStyle = style || "";
       if (startStyle) fullStyle += startStyle;
       if (endStyle) fullStyle += endStyle;
       return builder.pre.appendChild(elt("span", [content], fullStyle));
+    }
     builder.pre.appendChild(content);
+  }
   function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
     var wrapping = builder.cm.options.lineWrapping;
     for (var i = 0; i < text.length; ++i) {
       var ch = text.charAt(i), start = i == 0;
       if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) {
         ch = text.slice(i, i + 2);
         ++i;
       } else if (i && wrapping &&
                  spanAffectsWrapping.test(text.slice(i - 1, i + 1))) {
         builder.pre.appendChild(elt("wbr"));
+      }
       var span = builder.measure[builder.pos] =
         buildToken(builder, ch, style,
                    start && startStyle, i == text.length - 1 && endStyle);
       // In IE single-space nodes wrap differently than spaces
       // embedded in larger text nodes, except when set to
       // white-space: normal (issue #1268).
       if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) &&
           i < text.length - 1 && !/\s/.test(text.charAt(i + 1)))
         span.style.whiteSpace = "normal";
       builder.pos += ch.length;
+    }
     if (text.length) builder.addedOne = true;
+  }
   function buildTokenSplitSpaces(inner) {
     function split(old) {
       var out = " ";
       for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
       out += " ";
       return out;
+    }
     return function(builder, text, style, startStyle, endStyle) {
       return inner(builder, text.replace(/ {3,}/, split), style, startStyle, endStyle);
     };
+  }
   function buildCollapsedSpan(builder, size, widget) {
     if (widget) {
       if (!builder.display) widget = widget.cloneNode(true);
       builder.pre.appendChild(widget);
       if (builder.measure && size) {
         builder.measure[builder.pos] = widget;
         builder.addedOne = true;
+      }
+    }
     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;
     if (!spans) {
       for (var i = 1; i < styles.length; i+=2)
         builder.addToken(builder, styles[i], styleToClass(styles[i+1]));
       return;
+    }
     var allText = line.text, len = allText.length;
     var pos = 0, i = 1, text = "", style;
     var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed;
     for (;;) {
       if (nextChange == pos) { // Update current marker set
         spanStyle = spanEndStyle = spanStartStyle = "";
         collapsed = null; nextChange = Infinity;
         var foundBookmark = null;
         for (var j = 0; j < spans.length; ++j) {
           var sp = spans[j], m = sp.marker;
           if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
             if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
             if (m.className) spanStyle += " " + m.className;
             if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
             if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
             if (m.collapsed && (!collapsed || collapsed.marker.width < m.width))
               collapsed = sp;
           } else if (sp.from > pos && nextChange > sp.from) {
             nextChange = sp.from;
+          }
           if (m.type == "bookmark" && sp.from == pos && m.replacedWith)
             foundBookmark = m.replacedWith;
+        }
         if (collapsed && (collapsed.from || 0) == pos) {
           buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
                              collapsed.from != null && collapsed.marker.replacedWith);
           if (collapsed.to == null) return collapsed.marker.find();
+        }
         if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark);
+      }
       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 : "");
+          }
           if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
           pos = end;
           spanStartStyle = "";
+        }
         text = styles[i++]; style = styleToClass(styles[i++]);
+      }
+    }
+  }
   // DOCUMENT DATA STRUCTURE
   function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) {
     function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
     function update(line, text, spans) {
       updateLine(line, text, spans, estimateHeight);
       signalLater(line, "change", line, change);
+    }
     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;
     // First adjust the line structure
     if (from.ch == 0 && to.ch == 0 && lastText == "") {
       // This is a whole-line replace. Treated specially to make
       // sure line objects move the way they are supposed to.
       for (var i = 0, e = text.length - 1, added = []; i < e; ++i)
         added.push(makeLine(text[i], spansFor(i), estimateHeight));
       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 {
         for (var added = [], i = 1, e = text.length - 1; i < e; ++i)
           added.push(makeLine(text[i], spansFor(i), estimateHeight));
         added.push(makeLine(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);
       for (var i = 1, e = text.length - 1, added = []; i < e; ++i)
         added.push(makeLine(text[i], spansFor(i), estimateHeight));
       if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
       doc.insert(from.line + 1, added);
+    }
     signalLater(doc, "change", doc, change);
     setSelection(doc, selAfter.anchor, selAfter.head, null, true);
+  }
   function LeafChunk(lines) {
     this.lines = lines;
     this.parent = null;
@@ @@ -2706,22 +4375,22 @@ window.CodeMirror = (function() { @@
+    }
     this.height = height;
+  }
   LeafChunk.prototype = {
     chunkSize: function() { return this.lines.length; },
-    remove: function(at, n, callbacks) {
+    removeInner: function(at, n) {
       for (var i = at, e = at + n; i < e; ++i) {
         var line = this.lines[i];
         this.height -= line.height;
         line.cleanUp();
         if (line.handlers)
           for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]);
         cleanUpLine(line);
         signalLater(line, "delete");
+      }
       this.lines.splice(at, n);
     },
     collapse: function(lines) {
       lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
     },
-    insertHeight: function(at, lines, 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, e = lines.length; i < e; ++i) lines[i].parent = this;
@@ @@ -2731,6 +4400,7 @@ window.CodeMirror = (function() { @@
         if (op(this.lines[at])) return true;
+    }
   };
   function BranchChunk(children) {
     this.children = children;
     var size = 0, height = 0;
@@ @@ -2743,15 +4413,16 @@ window.CodeMirror = (function() { @@
     this.height = height;
     this.parent = null;
+  }
   BranchChunk.prototype = {
     chunkSize: function() { return this.size; },
-    remove: function(at, n, callbacks) {
+    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.remove(at, rm, callbacks);
+          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;
@@ @@ -2768,18 +4439,13 @@ window.CodeMirror = (function() { @@
     collapse: function(lines) {
       for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
     },
     insert: function(at, lines) {
       var height = 0;
       for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
       this.insertHeight(at, lines, height);
     },
     insertHeight: function(at, lines, height) {
     insertInner: function(at, lines, height) {
       this.size += lines.length;
       this.height += height;
       for (var i = 0, e = this.children.length; i < e; ++i) {
         var child = this.children[i], sz = child.chunkSize();
         if (at <= sz) {
-          child.insertHeight(at, lines, height);
+          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);
@@ @@ -2816,7 +4482,6 @@ window.CodeMirror = (function() { @@
       } while (me.children.length > 10);
       me.parent.maybeSpill();
     },
     iter: function(from, to, op) { this.iterN(from, to - from, op); },
     iterN: function(at, n, op) {
       for (var i = 0, e = this.children.length; i < e; ++i) {
         var child = this.children[i], sz = child.chunkSize();
@@ @@ -2830,7 +4495,268 @@ window.CodeMirror = (function() { @@
+    }
   };
   function getLineAt(chunk, n) {
   var nextDocId = 0;
   var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
     if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
     if (firstLine == null) firstLine = 0;
     BranchChunk.call(this, [new LeafChunk([makeLine("", null)])]);
     this.first = firstLine;
     this.scrollTop = this.scrollLeft = 0;
     this.cantEdit = false;
     this.history = makeHistory();
     this.frontier = firstLine;
     var start = Pos(firstLine, 0);
     this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null};
     this.id = ++nextDocId;
     this.modeOption = mode;
     if (typeof text == "string") text = splitLines(text);
     updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start});
   };
   Doc.prototype = createObj(BranchChunk.prototype, {
     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);
     },
     insert: function(at, lines) {
       var height = 0;
       for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
       this.insertInner(at - this.first, lines, height);
     },
     remove: function(at, n) { this.removeInner(at - this.first, n); },
     getValue: function(lineSep) {
       var lines = getLines(this, this.first, this.first + this.size);
       if (lineSep === false) return lines;
       return lines.join(lineSep || "\n");
     },
     setValue: 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: splitLines(code), origin: "setValue"},
                  {head: top, anchor: top}, true);
     },
     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 || "\n");
     },
     getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
     setLine: function(line, text) {
       if (isLine(this, line))
         replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line)));
     },
     removeLine: function(line) {
       if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line)));
       else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0)));
     },
     getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
     getLineNumber: function(line) {return lineNo(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 sel = this.sel, pos;
       if (start == null || start == "head") pos = sel.head;
       else if (start == "anchor") pos = sel.anchor;
       else if (start == "end" || start === false) pos = sel.to;
       else pos = sel.from;
       return copyPos(pos);
     },
     somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);},
     setCursor: docOperation(function(line, ch, extend) {
       var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line);
       if (extend) extendSelection(this, pos);
       else setSelection(this, pos, pos);
     }),
     setSelection: docOperation(function(anchor, head) {
       setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor));
     }),
     extendSelection: docOperation(function(from, to) {
       extendSelection(this, clipPos(this, from), to && clipPos(this, to));
     }),
     getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);},
     replaceSelection: function(code, collapse, origin) {
       makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around");
     },
     undo: docOperation(function() {makeChangeFromHistory(this, "undo");}),
     redo: docOperation(function() {makeChangeFromHistory(this, "redo");}),
     setExtending: function(val) {this.sel.extend = val;},
     historySize: function() {
       var hist = this.history;
       return {undo: hist.done.length, redo: hist.undone.length};
     },
     clearHistory: function() {this.history = makeHistory();},
     markClean: function() {
       this.history.dirtyCounter = 0;
       this.history.lastOp = this.history.lastOrigin = null;
     },
     isClean: function () {return this.history.dirtyCounter == 0;},
     getHistory: function() {
       return {done: copyHistoryArray(this.history.done),
               undone: copyHistoryArray(this.history.undone)};
     },
     setHistory: function(histData) {
       var hist = this.history = makeHistory();
       hist.done = histData.done.slice(0);
       hist.undone = histData.undone.slice(0);
     },
     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};
       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;
     },
     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);
       doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
       doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor,
                  shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn};
       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);
       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}];
       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);
         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 = makeHistory();
         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;}
   });
   Doc.prototype.eachLine = Doc.prototype.iter;
   // The Doc methods that should be available on CodeMirror instances
   var dontDelegate = "iter insert remove copy getEditor".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]);
   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);
+  }
   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) computeMaxLength(cm);
     cm.options.mode = doc.modeOption;
     regChange(cm);
+  }
   // LINE UTILITIES
   function getLine(chunk, n) {
     n -= chunk.first;
     while (!chunk.lines) {
       for (var i = 0;; ++i) {
         var child = chunk.children[i], sz = child.chunkSize();
@@ @@ -2840,19 +4766,43 @@ window.CodeMirror = (function() { @@
+    }
     return chunk.lines[n];
+  }
   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;
+  }
   function getLines(doc, from, to) {
     var out = [];
     doc.iter(from, to, function(line) { out.push(line.text); });
     return out;
+  }
   function updateLineHeight(line, height) {
     var diff = height - line.height;
     for (var n = line; n; n = n.parent) n.height += diff;
+  }
   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, e = chunk.children.length; ; ++i) {
       for (var i = 0;; ++i) {
         if (chunk.children[i] == cur) break;
         no += chunk.children[i].chunkSize();
+      }
+    }
     return no;
+  }
     return no + cur.first;
+  }
   function lineAtHeight(chunk, h) {
-    var n = 0;
+    var n = chunk.first;
     outer: do {
       for (var i = 0, e = chunk.children.length; i < e; ++i) {
         var child = chunk.children[i], ch = child.height;
@@ @@ -2869,58 +4819,197 @@ window.CodeMirror = (function() { @@
+    }
     return n + i;
+  }
   function heightAtLine(chunk, n) {
     var h = 0;
     outer: do {
       for (var i = 0, e = chunk.children.length; i < e; ++i) {
         var child = chunk.children[i], sz = child.chunkSize();
         if (n < sz) { chunk = child; continue outer; }
         n -= sz;
         h += child.height;
   function heightAtLine(cm, lineObj) {
     lineObj = visualLine(cm.doc, 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;
     } while (!chunk.lines);
     for (var i = 0; i < n; ++i) h += chunk.lines[i].height;
+    }
     return h;
+  }
   // The history object 'chunks' changes that are made close together
   // and at almost the same time into bigger undoable units.
   function History() {
     this.time = 0;
     this.done = []; this.undone = [];
     this.compound = 0;
     this.closed = false;
+  }
   History.prototype = {
     addChange: function(start, added, old) {
       this.undone.length = 0;
       var time = +new Date, cur = lst(this.done), last = cur && lst(cur);
       var dtime = time - this.time;
       if (cur && !this.closed && this.compound) {
         cur.push({start: start, added: added, old: old});
       } else if (dtime > 400 || !last || this.closed ||
                  last.start > start + old.length || last.start + last.added < start) {
         this.done.push([{start: start, added: added, old: old}]);
         this.closed = false;
   function getOrder(line) {
     var order = line.order;
     if (order == null) order = line.order = bidiOrdering(line.text);
     return order;
+  }
   // HISTORY
   function makeHistory() {
     return {
       // Arrays of history events. Doing something adds an event to
       // done and clears undo. Undoing moves events from done to
       // undone, redoing moves them in the other direction.
       done: [], undone: [], undoDepth: Infinity,
       // Used to track when changes can be merged into a single undo
       // event
       lastTime: 0, lastOp: null, lastOrigin: null,
       // Used by the isClean() method
       dirtyCounter: 0
     };
+  }
   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;
     });
+  }
   function historyChangeFromChange(doc, change) {
     var histChange = {from: 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;
+  }
   function addToHistory(doc, change, selAfter, opId) {
     var hist = doc.history;
     hist.undone.length = 0;
     var time = +new Date, cur = lst(hist.done);
     if (cur &&
         (hist.lastOp == opId ||
          hist.lastOrigin == change.origin && change.origin &&
          ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) ||
           change.origin.charAt(0) == "*"))) {
       // Merge this change into the last event
       var last = lst(cur.changes);
       if (posEq(change.from, change.to) && posEq(change.from, last.to)) {
         // Optimized case for simple insertion -- don't want to add
         // new changesets for every character typed
         last.to = changeEnd(change);
       } else {
         var startBefore = Math.max(0, last.start - start),
             endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
         for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
         for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
         if (startBefore) last.start = start;
         last.added += added - (old.length - startBefore - endAfter);
         // Add new sub-event
         cur.changes.push(historyChangeFromChange(doc, change));
+      }
       cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head;
     } else {
       // Can not be merged, start a new event.
       cur = {changes: [historyChangeFromChange(doc, change)],
              anchorBefore: doc.sel.anchor, headBefore: doc.sel.head,
              anchorAfter: selAfter.anchor, headAfter: selAfter.head};
       hist.done.push(cur);
       while (hist.done.length > hist.undoDepth)
         hist.done.shift();
       if (hist.dirtyCounter < 0)
         // The user has made a change after undoing past the last clean state.
         // We can never get back to a clean state now until markClean() is called.
         hist.dirtyCounter = NaN;
       else
         hist.dirtyCounter++;
+    }
     hist.lastTime = time;
     hist.lastOp = opId;
     hist.lastOrigin = change.origin;
+  }
   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;
+  }
   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) {
     for (var i = 0, copy = []; i < events.length; ++i) {
       var event = events[i], changes = event.changes, newChanges = [];
       copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore,
                  anchorAfter: event.anchorAfter, headAfter: event.headAfter});
       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];
+          }
+        }
+      }
       this.time = time;
     },
     startCompound: function() {
       if (!this.compound++) this.closed = true;
     },
     endCompound: function() {
       if (!--this.compound) this.closed = true;
+    }
   };
+    }
     return copy;
+  }
   // Rebasing/resetting history to deal with externally-sourced changes
   function rebaseHistSel(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;
       for (var j = 0; j < sub.changes.length; ++j) {
         var cur = sub.changes[j];
         if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); }
         if (to < cur.from.line) {
           cur.from.line += diff;
           cur.to.line += diff;
         } else if (from <= cur.to.line) {
           ok = false;
           break;
+        }
+      }
       if (!sub.copied) {
         sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore);
         sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter);
         sub.copied = true;
+      }
       if (!ok) {
         array.splice(0, i + 1);
         i = 0;
       } else {
         rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore);
         rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter);
+      }
+    }
+  }
   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 OPERATORS
   function stopMethod() {e_stop(this);}
   // Ensure an event has a stop method.
@@ @@ -2954,96 +5043,95 @@ window.CodeMirror = (function() { @@
     return b;
+  }
   // Allow 3rd-party code to override event properties by adding an override
   // object to an event object.
   function e_prop(e, prop) {
     var overridden = e.override && e.override.hasOwnProperty(prop);
     return overridden ? e.override[prop] : e[prop];
+  }
   // Event handler registration. If disconnect is true, it'll return a
   // function that unregisters the handler.
   function connect(node, type, handler, disconnect) {
     if (typeof node.addEventListener == "function") {
       node.addEventListener(type, handler, false);
       if (disconnect) return function() {node.removeEventListener(type, handler, false);};
     } else {
       var wrapHandler = function(event) {handler(event || window.event);};
       node.attachEvent("on" + type, wrapHandler);
       if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
+    }
+  }
   CodeMirror.connect = connect;
   // EVENT HANDLING
   function on(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);
+    }
+  }
   function off(emitter, type, f) {
     if (emitter.removeEventListener)
       emitter.removeEventListener(type, f, false);
     else if (emitter.detachEvent)
       emitter.detachEvent("on" + type, f);
     else {
       var arr = emitter._handlers && emitter._handlers[type];
       if (!arr) return;
       for (var i = 0; i < arr.length; ++i)
         if (arr[i] == f) { arr.splice(i, 1); break; }
+    }
+  }
   function signal(emitter, type /*, values...*/) {
     var arr = emitter._handlers && emitter._handlers[type];
     if (!arr) return;
     var args = Array.prototype.slice.call(arguments, 2);
     for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
+  }
   var delayedCallbacks, delayedCallbackDepth = 0;
   function signalLater(emitter, type /*, values...*/) {
     var arr = emitter._handlers && emitter._handlers[type];
     if (!arr) return;
     var args = Array.prototype.slice.call(arguments, 2);
     if (!delayedCallbacks) {
       ++delayedCallbackDepth;
       delayedCallbacks = [];
       setTimeout(fireDelayed, 0);
+    }
     function bnd(f) {return function(){f.apply(null, args);};};
     for (var i = 0; i < arr.length; ++i)
       delayedCallbacks.push(bnd(arr[i]));
+  }
   function fireDelayed() {
     --delayedCallbackDepth;
     var delayed = delayedCallbacks;
     delayedCallbacks = null;
     for (var i = 0; i < delayed.length; ++i) delayed[i]();
+  }
   function hasHandler(emitter, type) {
     var arr = emitter._handlers && emitter._handlers[type];
     return arr && arr.length > 0;
+  }
   CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;
   // MISC UTILITIES
   // Number of pixels added to scroller and sizer to hide scrollbar
   var scrollerCutOff = 30;
   // Returned or thrown by various protocols to signal 'I'm not
   // handling this'.
   var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
   function Delayed() {this.id = null;}
   Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
   var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
   // 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_lt9) return false;
     var div = elt('div');
     return "draggable" in div || "dragDrop" in div;
   }();
   // Feature-detect whether newlines in textareas are converted to \r\n
   var lineSep = function () {
     var te = elt("textarea");
     te.value = "foo\nbar";
     if (te.value.indexOf("\r") > -1) return "\r\n";
     return "\n";
   }();
   // For a reason I have yet to figure out, some browsers disallow
   // word wrapping between certain characters *only* if a new inline
   // element is started between them. This makes it hard to reliably
   // measure the position of things, since that requires inserting an
   // extra span. This terribly fragile set of regexps matches the
   // character combinations that suffer from this phenomenon on the
   // various browsers.
   var spanAffectsWrapping = /^$/; // Won't match any two-character string
   if (gecko) spanAffectsWrapping = /$'/;
   else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
   else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
   // Counts the column offset in a string, taking tabs into account.
   // Used mostly to find indentation.
   function countColumn(string, end, tabSize) {
+  function countColumn(string, end, tabSize, startIndex, startValue) {
     if (end == null) {
       end = string.search(/[^\s\u00a0]/);
       if (end == -1) end = string.length;
+    }
     for (var i = 0, n = 0; i < end; ++i) {
+    for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) {
       if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
       else ++n;
+    }
     return n;
+  }
   function eltOffset(node, screen) {
     // Take the parts of bounding client rect that we are interested in so we are able to edit if need be,
     // since the returned value cannot be changed externally (they are kept in sync as the element moves within the page)
     try { var box = node.getBoundingClientRect(); box = { top: box.top, left: box.left }; }
     catch(e) { box = {top: 0, left: 0}; }
     if (!screen) {
       // Get the toplevel scroll, working around browser differences.
       if (window.pageYOffset == null) {
         var t = document.documentElement || document.body.parentNode;
         if (t.scrollTop == null) t = document.body;
         box.top += t.scrollTop; box.left += t.scrollLeft;
       } else {
         box.top += window.pageYOffset; box.left += window.pageXOffset;
+      }
+    }
     return box;
+  }
   function eltText(node) {
     return node.textContent || node.innerText || node.nodeValue || "";
+  }
   CodeMirror.countColumn = countColumn;
   var spaceStrs = [""];
   function spaceStr(n) {
@@ @@ -3061,10 +5149,51 @@ window.CodeMirror = (function() { @@
     } else node.select();
+  }
   // Operations on {line, ch} objects.
   function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
   function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
   function copyPos(x) {return {line: x.line, ch: x.ch};}
   function indexOf(collection, elt) {
     if (collection.indexOf) return collection.indexOf(elt);
     for (var i = 0, e = collection.length; i < e; ++i)
       if (collection[i] == elt) return i;
     return -1;
+  }
   function createObj(base, props) {
     function Obj() {}
     Obj.prototype = base;
     var inst = new Obj();
     if (props) copyObj(props, inst);
     return inst;
+  }
   function copyObj(obj, target) {
     if (!target) target = {};
     for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop];
     return target;
+  }
   function emptyArray(size) {
     for (var a = [], i = 0; i < size; ++i) a.push(undefined);
     return a;
+  }
   function bind(f) {
     var args = Array.prototype.slice.call(arguments, 1);
     return function(){return f.apply(null, args);};
+  }
   var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/;
   function isWordChar(ch) {
     return /\w/.test(ch) || ch > "\x80" &&
       (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
+  }
   function isEmpty(obj) {
     for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
     return true;
+  }
   var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff]/;
   // DOM UTILITIES
   function elt(tag, content, className, style) {
     var e = document.createElement(tag);
@@ @@ -3074,13 +5203,17 @@ window.CodeMirror = (function() { @@
     else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
     return e;
+  }
   function removeChildren(e) {
     e.innerHTML = "";
     for (var count = e.childNodes.length; count > 0; --count)
       e.removeChild(e.firstChild);
     return e;
+  }
   function removeChildrenAndAdd(parent, e) {
     removeChildren(parent).appendChild(e);
+  }
     return removeChildren(parent).appendChild(e);
+  }
   function setTextContent(e, str) {
     if (ie_lt9) {
       e.innerHTML = "";
@@ @@ -3088,26 +5221,54 @@ window.CodeMirror = (function() { @@
     } else e.textContent = str;
+  }
   // Used to position the cursor after an undo/redo by finding the
   // last edited character.
   function editEnd(from, to) {
     if (!to) return 0;
     if (!from) return to.length;
     for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
       if (from.charAt(i) != to.charAt(j)) break;
     return j + 1;
+  }
   function indexOf(collection, elt) {
     if (collection.indexOf) return collection.indexOf(elt);
     for (var i = 0, e = collection.length; i < e; ++i)
       if (collection[i] == elt) return i;
     return -1;
+  }
   var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/;
   function isWordChar(ch) {
     return /\w/.test(ch) || ch > "\x80" &&
       (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
   function getRect(node) {
     return node.getBoundingClientRect();
+  }
   CodeMirror.replaceGetRect = function(f) { getRect = f; };
   // 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_lt9) return false;
     var div = elt('div');
     return "draggable" in div || "dragDrop" in div;
   }();
   // For a reason I have yet to figure out, some browsers disallow
   // word wrapping between certain characters *only* if a new inline
   // element is started between them. This makes it hard to reliably
   // measure the position of things, since that requires inserting an
   // extra span. This terribly fragile set of regexps matches the
   // character combinations that suffer from this phenomenon on the
   // various browsers.
   var spanAffectsWrapping = /^$/; // Won't match any two-character string
   if (gecko) spanAffectsWrapping = /$'/;
   else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
   else if (webkit) spanAffectsWrapping = /[~!#%&*)=+}\]|\"\.>,:;][({[<]|-[^\-?\.]|\?[\w~`@#$%\^&*(_=+{[|><]/;
   var knownScrollbarWidth;
   function scrollbarWidth(measure) {
     if (knownScrollbarWidth != null) return knownScrollbarWidth;
     var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
     removeChildrenAndAdd(measure, test);
     if (test.offsetWidth)
       knownScrollbarWidth = test.offsetHeight - test.clientHeight;
     return knownScrollbarWidth || 0;
+  }
   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_lt8;
+    }
     if (zwspSupported) return elt("span", "\u200b");
     else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
+  }
   // See if "".split is the broken IE version, if so, provide an
@@ @@ -3141,10 +5302,14 @@ window.CodeMirror = (function() { @@
     return range.compareEndPoints("StartToEnd", range) != 0;
   };
   CodeMirror.defineMode("null", function() {
     return {token: function(stream) {stream.skipToEnd();}};
   });
   CodeMirror.defineMIME("text/plain", "null");
   var hasCopyEvent = (function() {
     var e = elt("div");
     if ("oncopy" in e) return true;
     e.setAttribute("oncopy", "return;");
     return typeof e.oncopy == 'function';
   })();
   // KEY NAMING
   var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
 : "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
@@ @@ -3163,7 +5328,256 @@ window.CodeMirror = (function() { @@
     for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
   })();
   CodeMirror.version = "2.36";
   // BIDI HELPERS
   function iterateBidiSections(order, from, to, f) {
     if (!order) return f(from, to, "ltr");
     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");
+    }
+  }
   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(cm.doc, 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;
     while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN)))
       lineN = merged.find().to.line;
     var order = getOrder(line);
     var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
     return Pos(lineN, ch);
+  }
   // This is somewhat involved. It 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 moveOneUnit = byUnit ? function(pos, dir) {
       do pos += dir;
       while (pos > 0 && isExtendingChar.test(line.text.charAt(pos)));
       return pos;
     } : function(pos, dir) { return pos + dir; };
     var linedir = bidi[0].level;
     for (var i = 0; i < bidi.length; ++i) {
       var part = bidi[i], sticky = part.level % 2 == linedir;
       if ((part.from < start && part.to > start) ||
           (sticky && (part.from == start || part.to == start))) break;
+    }
     var target = moveOneUnit(start, part.level % 2 ? -dir : dir);
     while (target != null) {
       if (part.level % 2 == linedir) {
         if (target < part.from || target > part.to) {
           part = bidi[i += dir];
           target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1));
         } else break;
       } else {
         if (target == bidiLeft(part)) {
           part = bidi[--i];
           target = part && bidiRight(part);
         } else if (target == bidiRight(part)) {
           part = bidi[++i];
           target = part && bidiLeft(part);
         } else break;
+      }
+    }
     return target < 0 || target > line.text.length ? null : target;
+  }
   function moveLogically(line, start, dir, byUnit) {
     var target = start + dir;
     if (byUnit) while (target > 0 && isExtendingChar.test(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%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
     // Character types for codepoints 0x600 to 0x6ff
     var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
     function charType(code) {
       if (code <= 0xff) return lowTypes.charAt(code);
       else if (0x590 <= code && code <= 0x5f4) return "R";
       else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
       else if (0x700 <= code && code <= 0x8ac) return "r";
       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";
     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 - 1 && 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 - 1 ? 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({from: start, to: i, level: 0});
         } 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, {from: pos, to: j, level: 1});
               var nstart = j;
               for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
               order.splice(at, 0, {from: nstart, to: j, level: 2});
               pos = j;
             } else ++j;
+          }
           if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
+        }
+      }
       if (order[0].level == 1 && (m = str.match(/^\s+/))) {
         order[0].from = m[0].length;
         order.unshift({from: 0, to: m[0].length, level: 0});
+      }
       if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
         lst(order).to -= m[0].length;
         order.push({from: len - m[0].length, to: len, level: 0});
+      }
       if (order[0].level != lst(order).level)
         order.push({from: len, to: len, level: order[0].level});
       return order;
     };
   })();
   // THE END
   CodeMirror.version = "3.12";
   return CodeMirror;
 })();

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