text-align: right;

  padding: .4em .2em .4em .4em;

  white-space: pre !important;

  cursor: default;

}

.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;

  font-family: inherit;

  font-size: inherit;

  padding: 0; margin: 0;

  white-space: pre;

  word-wrap: normal;

  line-height: inherit;

  color: inherit;

}

.CodeMirror-wrap pre {

  word-wrap: break-word;

  white-space: pre-wrap;

  word-break: normal;

}

.CodeMirror-wrap .CodeMirror-scroll {

  overflow-x: hidden;

}

.CodeMirror textarea {

  outline: none !important;

}

.CodeMirror pre.CodeMirror-cursor {

  z-index: 10;

  position: absolute;

  visibility: hidden;

  border-left: 1px solid black;

  border-right: none;

  width: 0;

}

.cm-keymap-fat-cursor pre.CodeMirror-cursor {

    // 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"; }

    // 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,

    // Variables used by startOperation/endOperation to track what

    // happened during the operation.

    var updateInput, userSelChange, changes, textChanged, selectionChanged,

        gutterDirty, callbacks;

    // 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;

    // 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);

    // Gecko browsers fire contextmenu *after* opening the menu, at

    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);

    function drag_(e) {

      if (options.onDragEvent && options.onDragEvent(instance, 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, "cut", operation(function(){

      if (!options.readOnly) replaceSelection("");

    }));

    // Needed to handle Tab key in KHTML

    if (khtml) connect(sizer, "mouseup", function() {

        if (document.activeElement == input) input.blur();

        focusInput();

    });

    // 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();

        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;

      },

      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);

      },

      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;

          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};

      },

      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); }

      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) {

        lastScrollTop = scroller.scrollTop = scrollbar.scrollTop;

        updateDisplay([]);

      }

    }

    function onScrollMain(e) {

      if (options.fixedGutter && gutter.style.left != scroller.scrollLeft + "px")

        gutter.style.left = scroller.scrollLeft + "px";

        lastScrollTop = scroller.scrollTop;

        if (scrollbar.scrollTop != lastScrollTop)

          scrollbar.scrollTop = lastScrollTop;

        updateDisplay([]);

      }

      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);

      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();

      }

      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);

      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)};

        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();

      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) {

    }

    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);} :

        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});

    }

    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() {

      for (var i = 0; i < this.lines.length; ++i) {

        var line = this.lines[i];

      }

      this.lines.length = 0;

    });

    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};

        marker.lines.push(line);

        ++curLine;

      });

      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);

      var span = {from: pos.ch, to: pos.ch, marker: marker};

      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));

            setSelection(from, to);

          }

          return (gutterDirty = true);

        }

      });

    }

    function lineInfo(line) {

      if (typeof line == "number") {

        if (!isLine(line)) return null;

        var n = line;

        line = getLine(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 {x: x, y: y, yBot: y + lh};

    }

    // Coords must be lineSpace-local

    function coordsChar(x, y) {

      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];

    return instance;

  } // (end of function CodeMirror)

  // 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,

      var exts = modeExtensions[spec.name];

      for (var prop in exts) if (exts.hasOwnProperty(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 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];

  };

  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);

  // 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",

    "Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"

  };

  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;

    }