diff --git a/lib/codemirror/rails/version.rb b/lib/codemirror/rails/version.rb
index 142e098..e883309 100644
--- a/lib/codemirror/rails/version.rb
+++ b/lib/codemirror/rails/version.rb
@@ -1,6 +1,6 @@
 module Codemirror
   module Rails
-    VERSION = '5.16.0'
-    CODEMIRROR_VERSION = '5.16.0'
+    VERSION = '5.18.2'
+    CODEMIRROR_VERSION = '5.18.2'
   end
 end
diff --git a/vendor/assets/javascripts/codemirror.js b/vendor/assets/javascripts/codemirror.js
index 7dc842d..1071bb9 100644
--- a/vendor/assets/javascripts/codemirror.js
+++ b/vendor/assets/javascripts/codemirror.js
@@ -592,8 +592,12 @@
     var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
     var gutterW = display.gutters.offsetWidth, left = comp + "px";
     for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
-      if (cm.options.fixedGutter && view[i].gutter)
-        view[i].gutter.style.left = left;
+      if (cm.options.fixedGutter) {
+        if (view[i].gutter)
+          view[i].gutter.style.left = left;
+        if (view[i].gutterBackground)
+          view[i].gutterBackground.style.left = left;
+      }
       var align = view[i].alignable;
       if (align) for (var j = 0; j < align.length; j++)
         align[j].style.left = left;
@@ -1149,7 +1153,7 @@
   }
 
   function handlePaste(e, cm) {
-    var pasted = e.clipboardData && e.clipboardData.getData("text/plain");
+    var pasted = e.clipboardData && e.clipboardData.getData("Text");
     if (pasted) {
       e.preventDefault();
       if (!cm.isReadOnly() && !cm.options.disableInput)
@@ -1193,10 +1197,10 @@
     return {text: text, ranges: ranges};
   }
 
-  function disableBrowserMagic(field) {
+  function disableBrowserMagic(field, spellcheck) {
     field.setAttribute("autocorrect", "off");
     field.setAttribute("autocapitalize", "off");
-    field.setAttribute("spellcheck", "false");
+    field.setAttribute("spellcheck", !!spellcheck);
   }
 
   // TEXTAREA INPUT STYLE
@@ -1221,7 +1225,7 @@
   };
 
   function hiddenTextarea() {
-    var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
+    var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none");
     var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
     // The textarea is kept positioned near the cursor to prevent the
     // fact that it'll be scrolled into view on input from scrolling
@@ -1574,10 +1578,14 @@
     init: function(display) {
       var input = this, cm = input.cm;
       var div = input.div = display.lineDiv;
-      disableBrowserMagic(div);
+      disableBrowserMagic(div, cm.options.spellcheck);
 
       on(div, "paste", function(e) {
-        if (!signalDOMEvent(cm, e)) handlePaste(e, cm);
+        if (signalDOMEvent(cm, e) || handlePaste(e, cm)) return
+        // IE doesn't fire input events, so we schedule a read for the pasted content in this way
+        if (ie_version <= 11) setTimeout(operation(cm, function() {
+          if (!input.pollContent()) regChange(cm);
+        }), 20)
       })
 
       on(div, "compositionstart", function(e) {
@@ -1637,23 +1645,27 @@
             });
           }
         }
-        // iOS exposes the clipboard API, but seems to discard content inserted into it
-        if (e.clipboardData && !ios) {
-          e.preventDefault();
+        if (e.clipboardData) {
           e.clipboardData.clearData();
-          e.clipboardData.setData("text/plain", lastCopied.text.join("\n"));
-        } else {
-          // Old-fashioned briefly-focus-a-textarea hack
-          var kludge = hiddenTextarea(), te = kludge.firstChild;
-          cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
-          te.value = lastCopied.text.join("\n");
-          var hadFocus = document.activeElement;
-          selectInput(te);
-          setTimeout(function() {
-            cm.display.lineSpace.removeChild(kludge);
-            hadFocus.focus();
-          }, 50);
+          var content = lastCopied.text.join("\n")
+          // iOS exposes the clipboard API, but seems to discard content inserted into it
+          e.clipboardData.setData("Text", content);
+          if (e.clipboardData.getData("Text") == content) {
+            e.preventDefault();
+            return
+          }
         }
+        // Old-fashioned briefly-focus-a-textarea hack
+        var kludge = hiddenTextarea(), te = kludge.firstChild;
+        cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
+        te.value = lastCopied.text.join("\n");
+        var hadFocus = document.activeElement;
+        selectInput(te);
+        setTimeout(function() {
+          cm.display.lineSpace.removeChild(kludge);
+          hadFocus.focus();
+          if (hadFocus == div) input.showPrimarySelection()
+        }, 50);
       }
       on(div, "copy", onCopyCut);
       on(div, "cut", onCopyCut);
@@ -1961,7 +1973,7 @@
       if (found)
         return badPos(Pos(found.line, found.ch + dist), bad);
       else
-        dist += after.textContent.length;
+        dist += before.textContent.length;
     }
   }
 
@@ -2688,6 +2700,16 @@
     return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd};
   }
 
+  function getUsefulRect(rects, bias) {
+    var rect = nullRect
+    if (bias == "left") for (var i = 0; i < rects.length; i++) {
+      if ((rect = rects[i]).left != rect.right) break
+    } else for (var i = rects.length - 1; i >= 0; i--) {
+      if ((rect = rects[i]).left != rect.right) break
+    }
+    return rect
+  }
+
   function measureCharInner(cm, prepared, ch, bias) {
     var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
     var node = place.node, start = place.start, end = place.end, collapse = place.collapse;
@@ -2697,17 +2719,10 @@
       for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned
         while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start;
         while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end;
-        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {
+        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)
           rect = node.parentNode.getBoundingClientRect();
-        } else if (ie && cm.options.lineWrapping) {
-          var rects = range(node, start, end).getClientRects();
-          if (rects.length)
-            rect = rects[bias == "right" ? rects.length - 1 : 0];
-          else
-            rect = nullRect;
-        } else {
-          rect = range(node, start, end).getBoundingClientRect() || nullRect;
-        }
+        else
+          rect = getUsefulRect(range(node, start, end).getClientRects(), bias)
         if (rect.left || rect.right || start == 0) break;
         end = start;
         start = start - 1;
@@ -4419,7 +4434,7 @@
 
   // Revert a change stored in a document's history.
   function makeChangeFromHistory(doc, type, allowSelectionOnly) {
-    if (doc.cm && doc.cm.state.suppressEdits) return;
+    if (doc.cm && doc.cm.state.suppressEdits && !allowSelectionOnly) return;
 
     var hist = doc.history, event, selAfter = doc.sel;
     var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
@@ -4945,7 +4960,10 @@
     addOverlay: methodOp(function(spec, options) {
       var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
       if (mode.startState) throw new Error("Overlays may not be stateful.");
-      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
+      insertSorted(this.state.overlays,
+                   {mode: mode, modeSpec: spec, opaque: options && options.opaque,
+                    priority: (options && options.priority) || 0},
+                   function(overlay) { return overlay.priority })
       this.state.modeGen++;
       regChange(this);
     }),
@@ -5417,6 +5435,9 @@
   option("inputStyle", mobile ? "contenteditable" : "textarea", function() {
     throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME
   }, true);
+  option("spellcheck", false, function(cm, val) {
+    cm.getInputField().spellcheck = val
+  }, true);
   option("rtlMoveVisually", !windows);
   option("wholeLineUpdateBefore", true);
 
@@ -5526,6 +5547,8 @@
       spec.name = found.name;
     } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
       return CodeMirror.resolveMode("application/xml");
+    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
+      return CodeMirror.resolveMode("application/json");
     }
     if (typeof spec == "string") return {name: spec};
     else return spec || {name: "null"};
@@ -6944,6 +6967,7 @@
     var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
     var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
                    col: 0, pos: 0, cm: cm,
+                   trailingSpace: false,
                    splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")};
     lineView.measure = {};
 
@@ -7005,7 +7029,7 @@
   // the line map. Takes care to render special characters separately.
   function buildToken(builder, text, style, startStyle, endStyle, title, css) {
     if (!text) return;
-    var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text;
+    var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text
     var special = builder.cm.state.specialChars, mustWrap = false;
     if (!special.test(text)) {
       builder.col += text.length;
@@ -7050,6 +7074,7 @@
         builder.pos++;
       }
     }
+    builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32
     if (style || startStyle || endStyle || mustWrap || css) {
       var fullStyle = style || "";
       if (startStyle) fullStyle += startStyle;
@@ -7061,11 +7086,17 @@
     builder.content.appendChild(content);
   }
 
-  function splitSpaces(old) {
-    var out = " ";
-    for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
-    out += " ";
-    return out;
+  function splitSpaces(text, trailingBefore) {
+    if (text.length > 1 && !/  /.test(text)) return text
+    var spaceBefore = trailingBefore, result = ""
+    for (var i = 0; i < text.length; i++) {
+      var ch = text.charAt(i)
+      if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))
+        ch = "\u00a0"
+      result += ch
+      spaceBefore = ch == " "
+    }
+    return result
   }
 
   // Work around nonsense dimensions being reported for stretches of
@@ -7102,6 +7133,7 @@
       builder.content.appendChild(widget);
     }
     builder.pos += size;
+    builder.trailingSpace = false
   }
 
   // Outputs a number of spans to make up a line, taking highlighting
@@ -7946,7 +7978,7 @@
   }
 
   // Register a change in the history. Merges changes that are within
-  // a single operation, ore are close together with an origin that
+  // a single operation, or are close together with an origin that
   // allows merging (starting with "+") into a single event.
   function addChangeToHistory(doc, change, selAfter, opId) {
     var hist = doc.history;
@@ -8349,6 +8381,12 @@
     return out;
   }
 
+  function insertSorted(array, value, score) {
+    var pos = 0, priority = score(value)
+    while (pos < array.length && score(array[pos]) <= priority) pos++
+    array.splice(pos, 0, value)
+  }
+
   function nothing() {}
 
   function createObj(base, props) {
@@ -8549,8 +8587,9 @@
     if (badBidiRects != null) return badBidiRects;
     var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
     var r0 = range(txt, 0, 1).getBoundingClientRect();
-    if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
     var r1 = range(txt, 1, 2).getBoundingClientRect();
+    removeChildren(measure);
+    if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
     return badBidiRects = (r1.right - r0.right < 3);
   }
 
@@ -8916,7 +8955,7 @@
 
   // THE END
 
-  CodeMirror.version = "5.16.0";
+  CodeMirror.version = "5.18.2";
 
   return CodeMirror;
 });
diff --git a/vendor/assets/javascripts/codemirror/addons/comment/comment.js b/vendor/assets/javascripts/codemirror/addons/comment/comment.js
index 2c4f975..2f2f071 100644
--- a/vendor/assets/javascripts/codemirror/addons/comment/comment.js
+++ b/vendor/assets/javascripts/codemirror/addons/comment/comment.js
@@ -140,7 +140,7 @@
         var line = self.getLine(i);
         var found = line.indexOf(lineString);
         if (found > -1 && !/comment/.test(self.getTokenTypeAt(Pos(i, found + 1)))) found = -1;
-        if (found == -1 && (i != end || i == start) && nonWS.test(line)) break lineComment;
+        if (found == -1 && nonWS.test(line)) break lineComment;
         if (found > -1 && nonWS.test(line.slice(0, found))) break lineComment;
         lines.push(line);
       }
diff --git a/vendor/assets/javascripts/codemirror/addons/edit/matchbrackets.js b/vendor/assets/javascripts/codemirror/addons/edit/matchbrackets.js
index 70e1ae1..76754ed 100644
--- a/vendor/assets/javascripts/codemirror/addons/edit/matchbrackets.js
+++ b/vendor/assets/javascripts/codemirror/addons/edit/matchbrackets.js
@@ -102,8 +102,10 @@
   }
 
   CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) {
-    if (old && old != CodeMirror.Init)
+    if (old && old != CodeMirror.Init) {
       cm.off("cursorActivity", doMatchBrackets);
+      if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;}
+    }
     if (val) {
       cm.state.matchBrackets = typeof val == "object" ? val : {};
       cm.on("cursorActivity", doMatchBrackets);
diff --git a/vendor/assets/javascripts/codemirror/addons/hint/javascript-hint.js b/vendor/assets/javascripts/codemirror/addons/hint/javascript-hint.js
index 7bcbf4a..d7088c1 100644
--- a/vendor/assets/javascripts/codemirror/addons/hint/javascript-hint.js
+++ b/vendor/assets/javascripts/codemirror/addons/hint/javascript-hint.js
@@ -97,6 +97,15 @@
   var coffeescriptKeywords = ("and break catch class continue delete do else extends false finally for " +
                   "if in instanceof isnt new no not null of off on or return switch then throw true try typeof until void while with yes").split(" ");
 
+  function forAllProps(obj, callback) {
+    if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) {
+      for (var name in obj) callback(name)
+    } else {
+      for (var o = obj; o; o = Object.getPrototypeOf(o))
+        Object.getOwnPropertyNames(o).forEach(callback)
+    }
+  }
+
   function getCompletions(token, context, keywords, options) {
     var found = [], start = token.string, global = options && options.globalScope || window;
     function maybeAdd(str) {
@@ -106,7 +115,7 @@
       if (typeof obj == "string") forEach(stringProps, maybeAdd);
       else if (obj instanceof Array) forEach(arrayProps, maybeAdd);
       else if (obj instanceof Function) forEach(funcProps, maybeAdd);
-      for (var name in obj) maybeAdd(name);
+      forAllProps(obj, maybeAdd)
     }
 
     if (context && context.length) {
diff --git a/vendor/assets/javascripts/codemirror/addons/hint/show-hint.js b/vendor/assets/javascripts/codemirror/addons/hint/show-hint.js
index 64ec928..604bd3b 100644
--- a/vendor/assets/javascripts/codemirror/addons/hint/show-hint.js
+++ b/vendor/assets/javascripts/codemirror/addons/hint/show-hint.js
@@ -230,6 +230,8 @@
     (completion.options.container || document.body).appendChild(hints);
     var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
     var scrolls = hints.scrollHeight > hints.clientHeight + 1
+    var startScroll = cm.getScrollInfo();
+
     if (overlapY > 0) {
       var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
       if (curTop - height > 0) { // Fits above cursor
@@ -273,7 +275,6 @@
       cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); });
     }
 
-    var startScroll = cm.getScrollInfo();
     cm.on("scroll", this.onScroll = function() {
       var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
       var newTop = top + startScroll.top - curScroll.top;
diff --git a/vendor/assets/javascripts/codemirror/addons/merge/merge.js b/vendor/assets/javascripts/codemirror/addons/merge/merge.js
index d67b760..cc94caf 100644
--- a/vendor/assets/javascripts/codemirror/addons/merge/merge.js
+++ b/vendor/assets/javascripts/codemirror/addons/merge/merge.js
@@ -284,7 +284,9 @@
     if (dv.copyButtons) clear(dv.copyButtons);
 
     var vpEdit = dv.edit.getViewport(), vpOrig = dv.orig.getViewport();
-    var sTopEdit = dv.edit.getScrollInfo().top, sTopOrig = dv.orig.getScrollInfo().top;
+    var outerTop = dv.mv.wrap.getBoundingClientRect().top
+    var sTopEdit = outerTop - dv.edit.getScrollerElement().getBoundingClientRect().top + dv.edit.getScrollInfo().top
+    var sTopOrig = outerTop - dv.orig.getScrollerElement().getBoundingClientRect().top + dv.orig.getScrollInfo().top;
     for (var i = 0; i < dv.chunks.length; i++) {
       var ch = dv.chunks[i];
       if (ch.editFrom <= vpEdit.to && ch.editTo >= vpEdit.from &&
diff --git a/vendor/assets/javascripts/codemirror/addons/mode/multiplex_test.js b/vendor/assets/javascripts/codemirror/addons/mode/multiplex_test.js
new file mode 100644
index 0000000..24e5e67
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/addons/mode/multiplex_test.js
@@ -0,0 +1,33 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  CodeMirror.defineMode("markdown_with_stex", function(){
+    var inner = CodeMirror.getMode({}, "stex");
+    var outer = CodeMirror.getMode({}, "markdown");
+
+    var innerOptions = {
+      open: '$',
+      close: '$',
+      mode: inner,
+      delimStyle: 'delim',
+      innerStyle: 'inner'
+    };
+
+    return CodeMirror.multiplexingMode(outer, innerOptions);
+  });
+
+  var mode = CodeMirror.getMode({}, "markdown_with_stex");
+
+  function MT(name) {
+    test.mode(
+      name,
+      mode,
+      Array.prototype.slice.call(arguments, 1),
+      'multiplexing');
+  }
+
+  MT(
+    "stexInsideMarkdown",
+    "[strong **Equation:**] [delim&delim-open $][inner&tag \\pi][delim&delim-close $]");
+})();
diff --git a/vendor/assets/javascripts/codemirror/addons/search/match-highlighter.js b/vendor/assets/javascripts/codemirror/addons/search/match-highlighter.js
index 2c2914a..73ba0e0 100644
--- a/vendor/assets/javascripts/codemirror/addons/search/match-highlighter.js
+++ b/vendor/assets/javascripts/codemirror/addons/search/match-highlighter.js
@@ -45,6 +45,7 @@
       this.options[name] = (options && options.hasOwnProperty(name) ? options : defaults)[name]
     this.overlay = this.timeout = null;
     this.matchesonscroll = null;
+    this.active = false;
   }
 
   CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
@@ -53,16 +54,34 @@
       clearTimeout(cm.state.matchHighlighter.timeout);
       cm.state.matchHighlighter = null;
       cm.off("cursorActivity", cursorActivity);
+      cm.off("focus", onFocus)
     }
     if (val) {
-      cm.state.matchHighlighter = new State(val);
-      highlightMatches(cm);
+      var state = cm.state.matchHighlighter = new State(val);
+      if (cm.hasFocus()) {
+        state.active = true
+        highlightMatches(cm)
+      } else {
+        cm.on("focus", onFocus)
+      }
       cm.on("cursorActivity", cursorActivity);
     }
   });
 
   function cursorActivity(cm) {
     var state = cm.state.matchHighlighter;
+    if (state.active || cm.hasFocus()) scheduleHighlight(cm, state)
+  }
+
+  function onFocus(cm) {
+    var state = cm.state.matchHighlighter
+    if (!state.active) {
+      state.active = true
+      scheduleHighlight(cm, state)
+    }
+  }
+
+  function scheduleHighlight(cm, state) {
     clearTimeout(state.timeout);
     state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
   }
@@ -72,7 +91,7 @@
     cm.addOverlay(state.overlay = makeOverlay(query, hasBoundary, style));
     if (state.options.annotateScrollbar && cm.showMatchesOnScrollbar) {
       var searchFor = hasBoundary ? new RegExp("\\b" + query + "\\b") : query;
-      state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, true,
+      state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, false,
         {className: "CodeMirror-selection-highlight-scrollbar"});
     }
   }
diff --git a/vendor/assets/javascripts/codemirror/addons/search/search.js b/vendor/assets/javascripts/codemirror/addons/search/search.js
index c005866..753b1af 100644
--- a/vendor/assets/javascripts/codemirror/addons/search/search.js
+++ b/vendor/assets/javascripts/codemirror/addons/search/search.js
@@ -136,8 +136,11 @@
         })
       };
       persistentDialog(cm, queryDialog, q, searchNext, function(event, query) {
-        var cmd = CodeMirror.keyMap[cm.getOption("keyMap")][CodeMirror.keyName(event)];
-        if (cmd == "findNext" || cmd == "findPrev") {
+        var keyName = CodeMirror.keyName(event)
+        var cmd = CodeMirror.keyMap[cm.getOption("keyMap")][keyName]
+        if (!cmd) cmd = cm.getOption('extraKeys')[keyName]
+        if (cmd == "findNext" || cmd == "findPrev" ||
+          cmd == "findPersistentNext" || cmd == "findPersistentPrev") {
           CodeMirror.e_stop(event);
           startSearch(cm, getSearchState(cm), query);
           cm.execCommand(cmd);
@@ -146,7 +149,7 @@
           searchNext(query, event);
         }
       });
-      if (immediate) {
+      if (immediate && q) {
         startSearch(cm, state, q);
         findNext(cm, rev);
       }
diff --git a/vendor/assets/javascripts/codemirror/keymaps/sublime.js b/vendor/assets/javascripts/codemirror/keymaps/sublime.js
index ed6b847..db9f54d 100644
--- a/vendor/assets/javascripts/codemirror/keymaps/sublime.js
+++ b/vendor/assets/javascripts/codemirror/keymaps/sublime.js
@@ -52,8 +52,10 @@
     });
   }
 
-  cmds[map["Alt-Left"] = "goSubwordLeft"] = function(cm) { moveSubword(cm, -1); };
-  cmds[map["Alt-Right"] = "goSubwordRight"] = function(cm) { moveSubword(cm, 1); };
+  var goSubwordCombo = mac ? "Ctrl-" : "Alt-";
+
+  cmds[map[goSubwordCombo + "Left"] = "goSubwordLeft"] = function(cm) { moveSubword(cm, -1); };
+  cmds[map[goSubwordCombo + "Right"] = "goSubwordRight"] = function(cm) { moveSubword(cm, 1); };
 
   if (mac) map["Cmd-Left"] = "goLineStartSmart";
 
diff --git a/vendor/assets/javascripts/codemirror/keymaps/vim.js b/vendor/assets/javascripts/codemirror/keymaps/vim.js
index 4278ee9..afed132 100644
--- a/vendor/assets/javascripts/codemirror/keymaps/vim.js
+++ b/vendor/assets/javascripts/codemirror/keymaps/vim.js
@@ -72,6 +72,7 @@
     { keys: '<PageUp>', type: 'keyToKey', toKeys: '<C-b>' },
     { keys: '<PageDown>', type: 'keyToKey', toKeys: '<C-f>' },
     { keys: '<CR>', type: 'keyToKey', toKeys: 'j^', context: 'normal' },
+    { keys: '<Ins>', type: 'action', action: 'toggleOverwrite', context: 'insert' },
     // Motions
     { keys: 'H', type: 'motion', motion: 'moveToTopLine', motionArgs: { linewise: true, toJumplist: true }},
     { keys: 'M', type: 'motion', motion: 'moveToMiddleLine', motionArgs: { linewise: true, toJumplist: true }},
@@ -276,6 +277,7 @@
 
     function cmKey(key, cm) {
       if (!cm) { return undefined; }
+      if (this[key]) { return this[key]; }
       var vimKey = cmKeyToVimKey(key);
       if (!vimKey) {
         return false;
@@ -288,7 +290,7 @@
     }
 
     var modifiers = {'Shift': 'S', 'Ctrl': 'C', 'Alt': 'A', 'Cmd': 'D', 'Mod': 'A'};
-    var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del'};
+    var specialKeys = {Enter:'CR',Backspace:'BS',Delete:'Del',Insert:'Ins'};
     function cmKeyToVimKey(key) {
       if (key.charAt(0) == '\'') {
         // Keypress character binding of format "'a'"
@@ -2174,6 +2176,17 @@
         var registerName = actionArgs.selectedCharacter;
         macroModeState.enterMacroRecordMode(cm, registerName);
       },
+      toggleOverwrite: function(cm) {
+        if (!cm.state.overwrite) {
+          cm.toggleOverwrite(true);
+          cm.setOption('keyMap', 'vim-replace');
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
+        } else {
+          cm.toggleOverwrite(false);
+          cm.setOption('keyMap', 'vim-insert');
+          CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
+        }
+      },
       enterInsertMode: function(cm, actionArgs, vim) {
         if (cm.getOption('readOnly')) { return; }
         vim.insertMode = true;
@@ -2219,7 +2232,6 @@
             return;
           }
         }
-        cm.setOption('keyMap', 'vim-insert');
         cm.setOption('disableInput', false);
         if (actionArgs && actionArgs.replace) {
           // Handle Replace-mode as a special case of insert mode.
@@ -2227,6 +2239,7 @@
           cm.setOption('keyMap', 'vim-replace');
           CodeMirror.signal(cm, "vim-mode-change", {mode: "replace"});
         } else {
+          cm.toggleOverwrite(false);
           cm.setOption('keyMap', 'vim-insert');
           CodeMirror.signal(cm, "vim-mode-change", {mode: "insert"});
         }
@@ -4771,13 +4784,6 @@
     CodeMirror.keyMap['vim-insert'] = {
       // TODO: override navigation keys so that Esc will cancel automatic
       // indentation from o, O, i_<CR>
-      'Ctrl-N': 'autocomplete',
-      'Ctrl-P': 'autocomplete',
-      'Enter': function(cm) {
-        var fn = CodeMirror.commands.newlineAndIndentContinueComment ||
-            CodeMirror.commands.newlineAndIndent;
-        fn(cm);
-      },
       fallthrough: ['default'],
       attach: attachVimMap,
       detach: detachVimMap,
diff --git a/vendor/assets/javascripts/codemirror/modes/gss_test.js b/vendor/assets/javascripts/codemirror/modes/gss_test.js
new file mode 100644
index 0000000..d56e592
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/gss_test.js
@@ -0,0 +1,17 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  "use strict";
+
+  var mode = CodeMirror.getMode({indentUnit: 2}, "text/x-gss");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1), "gss"); }
+
+  MT("atComponent",
+     "[def @component] {",
+     "[tag foo] {",
+     "  [property color]: [keyword black];",
+     "}",
+     "}");
+
+})();
diff --git a/vendor/assets/javascripts/codemirror/modes/htmlmixed.js b/vendor/assets/javascripts/codemirror/modes/htmlmixed.js
index d74083e..eb21fcc 100644
--- a/vendor/assets/javascripts/codemirror/modes/htmlmixed.js
+++ b/vendor/assets/javascripts/codemirror/modes/htmlmixed.js
@@ -46,7 +46,7 @@
 
   function getAttrValue(text, attr) {
     var match = text.match(getAttrRegexp(attr))
-    return match ? match[2] : ""
+    return match ? /^\s*(.*?)\s*$/.exec(match[2])[1] : ""
   }
 
   function getTagRegexp(tagName, anchored) {
diff --git a/vendor/assets/javascripts/codemirror/modes/javascript.js b/vendor/assets/javascripts/codemirror/modes/javascript.js
index ca87541..d7c5716 100644
--- a/vendor/assets/javascripts/codemirror/modes/javascript.js
+++ b/vendor/assets/javascripts/codemirror/modes/javascript.js
@@ -1,8 +1,6 @@
 // CodeMirror, copyright (c) by Marijn Haverbeke and others
 // Distributed under an MIT license: http://codemirror.net/LICENSE
 
-// TODO actually recognize syntax of TypeScript constructs
-
 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS
     mod(require("../../lib/codemirror"));
@@ -216,7 +214,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       var bracket = brackets.indexOf(ch);
       if (bracket >= 0 && bracket < 3) {
         if (!depth) { ++pos; break; }
-        if (--depth == 0) break;
+        if (--depth == 0) { if (ch == "(") sawSomething = true; break; }
       } else if (bracket >= 3 && bracket < 6) {
         ++depth;
       } else if (wordRE.test(ch)) {
@@ -386,8 +384,8 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;
     if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);
     if (type == "function") return cont(functiondef, maybeop);
-    if (type == "keyword c") return cont(noComma ? maybeexpressionNoComma : maybeexpression);
-    if (type == "(") return cont(pushlex(")"), maybeexpression, comprehension, expect(")"), poplex, maybeop);
+    if (type == "keyword c" || type == "async") return cont(noComma ? maybeexpressionNoComma : maybeexpression);
+    if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);
     if (type == "operator" || type == "spread") return cont(noComma ? expressionNoComma : expression);
     if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop);
     if (type == "{") return contCommasep(objprop, "}", null, maybeop);
@@ -463,7 +461,10 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     if (type == "variable") {cx.marked = "property"; return cont();}
   }
   function objprop(type, value) {
-    if (type == "variable" || cx.style == "keyword") {
+    if (type == "async") {
+      cx.marked = "property";
+      return cont(objprop);
+    } else if (type == "variable" || cx.style == "keyword") {
       cx.marked = "property";
       if (value == "get" || value == "set") return cont(getterSetter);
       return cont(afterprop);
@@ -478,6 +479,8 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       return cont(expression, expect("]"), afterprop);
     } else if (type == "spread") {
       return cont(expression);
+    } else if (type == ":") {
+      return pass(afterprop)
     }
   }
   function getterSetter(type) {
@@ -494,7 +497,10 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       if (type == ",") {
         var lex = cx.state.lexical;
         if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;
-        return cont(what, proceed);
+        return cont(function(type, value) {
+          if (type == end || value == end) return pass()
+          return pass(what)
+        }, proceed);
       }
       if (type == end || value == end) return cont();
       return cont(expect(end));
@@ -521,6 +527,23 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
   }
   function typeexpr(type) {
     if (type == "variable") {cx.marked = "variable-3"; return cont(afterType);}
+    if (type == "{") return cont(commasep(typeprop, "}"))
+    if (type == "(") return cont(commasep(typearg, ")"), maybeReturnType)
+  }
+  function maybeReturnType(type) {
+    if (type == "=>") return cont(typeexpr)
+  }
+  function typeprop(type) {
+    if (type == "variable" || cx.style == "keyword") {
+      cx.marked = "property"
+      return cont(typeprop)
+    } else if (type == ":") {
+      return cont(typeexpr)
+    }
+  }
+  function typearg(type) {
+    if (type == "variable") return cont(typearg)
+    else if (type == ":") return cont(typeexpr)
   }
   function afterType(type, value) {
     if (value == "<") return cont(commasep(typeexpr, ">"), afterType)
@@ -589,7 +612,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     if (type == "variable") {register(value); return cont(classNameAfter);}
   }
   function classNameAfter(type, value) {
-    if (value == "extends") return cont(expression, classNameAfter);
+    if (value == "extends") return cont(isTS ? typeexpr : expression, classNameAfter);
     if (type == "{") return cont(pushlex("}"), classBody, poplex);
   }
   function classBody(type, value) {
@@ -637,17 +660,8 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
   }
   function arrayLiteral(type) {
     if (type == "]") return cont();
-    return pass(expressionNoComma, maybeArrayComprehension);
-  }
-  function maybeArrayComprehension(type) {
-    if (type == "for") return pass(comprehension, expect("]"));
-    if (type == ",") return cont(commasep(maybeexpressionNoComma, "]"));
     return pass(commasep(expressionNoComma, "]"));
   }
-  function comprehension(type) {
-    if (type == "for") return cont(forspec, comprehension);
-    if (type == "if") return cont(expression, comprehension);
-  }
 
   function isContinuedStatement(state, textAfter) {
     return state.lastType == "operator" || state.lastType == "," ||
diff --git a/vendor/assets/javascripts/codemirror/modes/jsx.js b/vendor/assets/javascripts/codemirror/modes/jsx.js
index aff01b8..45c3024 100644
--- a/vendor/assets/javascripts/codemirror/modes/jsx.js
+++ b/vendor/assets/javascripts/codemirror/modes/jsx.js
@@ -144,4 +144,5 @@
   }, "xml", "javascript")
 
   CodeMirror.defineMIME("text/jsx", "jsx")
+  CodeMirror.defineMIME("text/typescript-jsx", {name: "jsx", base: {name: "javascript", typescript: true}})
 });
diff --git a/vendor/assets/javascripts/codemirror/modes/less_test.js b/vendor/assets/javascripts/codemirror/modes/less_test.js
new file mode 100644
index 0000000..dd82155
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/less_test.js
@@ -0,0 +1,54 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  "use strict";
+
+  var mode = CodeMirror.getMode({indentUnit: 2}, "text/x-less");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1), "less"); }
+
+  MT("variable",
+     "[variable-2 @base]: [atom #f04615];",
+     "[qualifier .class] {",
+     "  [property width]: [variable percentage]([number 0.5]); [comment // returns `50%`]",
+     "  [property color]: [variable saturate]([variable-2 @base], [number 5%]);",
+     "}");
+
+  MT("amp",
+     "[qualifier .child], [qualifier .sibling] {",
+     "  [qualifier .parent] [atom &] {",
+     "    [property color]: [keyword black];",
+     "  }",
+     "  [atom &] + [atom &] {",
+     "    [property color]: [keyword red];",
+     "  }",
+     "}");
+
+  MT("mixin",
+     "[qualifier .mixin] ([variable dark]; [variable-2 @color]) {",
+     "  [property color]: [atom darken]([variable-2 @color], [number 10%]);",
+     "}",
+     "[qualifier .mixin] ([variable light]; [variable-2 @color]) {",
+     "  [property color]: [atom lighten]([variable-2 @color], [number 10%]);",
+     "}",
+     "[qualifier .mixin] ([variable-2 @_]; [variable-2 @color]) {",
+     "  [property display]: [atom block];",
+     "}",
+     "[variable-2 @switch]: [variable light];",
+     "[qualifier .class] {",
+     "  [qualifier .mixin]([variable-2 @switch]; [atom #888]);",
+     "}");
+
+  MT("nest",
+     "[qualifier .one] {",
+     "  [def @media] ([property width]: [number 400px]) {",
+     "    [property font-size]: [number 1.2em];",
+     "    [def @media] [attribute print] [keyword and] [property color] {",
+     "      [property color]: [keyword blue];",
+     "    }",
+     "  }",
+     "}");
+
+
+  MT("interpolation", ".@{[variable foo]} { [property font-weight]: [atom bold]; }");
+})();
diff --git a/vendor/assets/javascripts/codemirror/modes/livescript.js b/vendor/assets/javascripts/codemirror/modes/livescript.js
index 4b26e04..1e363f8 100644
--- a/vendor/assets/javascripts/codemirror/modes/livescript.js
+++ b/vendor/assets/javascripts/codemirror/modes/livescript.js
@@ -50,7 +50,7 @@
       startState: function(){
         return {
           next: 'start',
-          lastToken: null
+          lastToken: {style: null, indent: 0, content: ""}
         };
       },
       token: function(stream, state){
diff --git a/vendor/assets/javascripts/codemirror/modes/markdown.js b/vendor/assets/javascripts/codemirror/modes/markdown.js
index 37329c2..9dd4457 100644
--- a/vendor/assets/javascripts/codemirror/modes/markdown.js
+++ b/vendor/assets/javascripts/codemirror/modes/markdown.js
@@ -63,7 +63,9 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
     list2: "variable-3",
     list3: "keyword",
     hr: "hr",
-    image: "tag",
+    image: "image",
+    imageAltText: "image-alt-text",
+    imageMarker: "image-marker",
     formatting: "formatting",
     linkInline: "link",
     linkEmail: "link",
@@ -313,6 +315,9 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
       if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }
       if (state.linkText) { styles.push(tokenTypes.linkText); }
       if (state.code) { styles.push(tokenTypes.code); }
+      if (state.image) { styles.push(tokenTypes.image); }
+      if (state.imageAltText) { styles.push(tokenTypes.imageAltText, "link"); }
+      if (state.imageMarker) { styles.push(tokenTypes.imageMarker); }
     }
 
     if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + "-" + state.header); }
@@ -432,12 +437,29 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
     }
 
     if (ch === '!' && stream.match(/\[[^\]]*\] ?(?:\(|\[)/, false)) {
-      stream.match(/\[[^\]]*\]/);
+      state.imageMarker = true;
+      state.image = true;
+      if (modeCfg.highlightFormatting) state.formatting = "image";
+      return getType(state);
+    }
+
+    if (ch === '[' && state.imageMarker) {
+      state.imageMarker = false;
+      state.imageAltText = true
+      if (modeCfg.highlightFormatting) state.formatting = "image";
+      return getType(state);
+    }
+
+    if (ch === ']' && state.imageAltText) {
+      if (modeCfg.highlightFormatting) state.formatting = "image";
+      var type = getType(state);
+      state.imageAltText = false;
+      state.image = false;
       state.inline = state.f = linkHref;
-      return tokenTypes.image;
+      return type;
     }
 
-    if (ch === '[' && stream.match(/[^\]]*\](\(.*\)| ?\[.*?\])/, false)) {
+    if (ch === '[' && stream.match(/[^\]]*\](\(.*\)| ?\[.*?\])/, false) && !state.image) {
       state.linkText = true;
       if (modeCfg.highlightFormatting) state.formatting = "link";
       return getType(state);
diff --git a/vendor/assets/javascripts/codemirror/modes/meta.js b/vendor/assets/javascripts/codemirror/modes/meta.js
new file mode 100644
index 0000000..2e9ac7c
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/meta.js
@@ -0,0 +1,208 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  CodeMirror.modeInfo = [
+    {name: "APL", mime: "text/apl", mode: "apl", ext: ["dyalog", "apl"]},
+    {name: "PGP", mimes: ["application/pgp", "application/pgp-keys", "application/pgp-signature"], mode: "asciiarmor", ext: ["pgp"]},
+    {name: "ASN.1", mime: "text/x-ttcn-asn", mode: "asn.1", ext: ["asn", "asn1"]},
+    {name: "Asterisk", mime: "text/x-asterisk", mode: "asterisk", file: /^extensions\.conf$/i},
+    {name: "Brainfuck", mime: "text/x-brainfuck", mode: "brainfuck", ext: ["b", "bf"]},
+    {name: "C", mime: "text/x-csrc", mode: "clike", ext: ["c", "h"]},
+    {name: "C++", mime: "text/x-c++src", mode: "clike", ext: ["cpp", "c++", "cc", "cxx", "hpp", "h++", "hh", "hxx"], alias: ["cpp"]},
+    {name: "Cobol", mime: "text/x-cobol", mode: "cobol", ext: ["cob", "cpy"]},
+    {name: "C#", mime: "text/x-csharp", mode: "clike", ext: ["cs"], alias: ["csharp"]},
+    {name: "Clojure", mime: "text/x-clojure", mode: "clojure", ext: ["clj", "cljc", "cljx"]},
+    {name: "ClojureScript", mime: "text/x-clojurescript", mode: "clojure", ext: ["cljs"]},
+    {name: "Closure Stylesheets (GSS)", mime: "text/x-gss", mode: "css", ext: ["gss"]},
+    {name: "CMake", mime: "text/x-cmake", mode: "cmake", ext: ["cmake", "cmake.in"], file: /^CMakeLists.txt$/},
+    {name: "CoffeeScript", mime: "text/x-coffeescript", mode: "coffeescript", ext: ["coffee"], alias: ["coffee", "coffee-script"]},
+    {name: "Common Lisp", mime: "text/x-common-lisp", mode: "commonlisp", ext: ["cl", "lisp", "el"], alias: ["lisp"]},
+    {name: "Cypher", mime: "application/x-cypher-query", mode: "cypher", ext: ["cyp", "cypher"]},
+    {name: "Cython", mime: "text/x-cython", mode: "python", ext: ["pyx", "pxd", "pxi"]},
+    {name: "Crystal", mime: "text/x-crystal", mode: "crystal", ext: ["cr"]},
+    {name: "CSS", mime: "text/css", mode: "css", ext: ["css"]},
+    {name: "CQL", mime: "text/x-cassandra", mode: "sql", ext: ["cql"]},
+    {name: "D", mime: "text/x-d", mode: "d", ext: ["d"]},
+    {name: "Dart", mimes: ["application/dart", "text/x-dart"], mode: "dart", ext: ["dart"]},
+    {name: "diff", mime: "text/x-diff", mode: "diff", ext: ["diff", "patch"]},
+    {name: "Django", mime: "text/x-django", mode: "django"},
+    {name: "Dockerfile", mime: "text/x-dockerfile", mode: "dockerfile", file: /^Dockerfile$/},
+    {name: "DTD", mime: "application/xml-dtd", mode: "dtd", ext: ["dtd"]},
+    {name: "Dylan", mime: "text/x-dylan", mode: "dylan", ext: ["dylan", "dyl", "intr"]},
+    {name: "EBNF", mime: "text/x-ebnf", mode: "ebnf"},
+    {name: "ECL", mime: "text/x-ecl", mode: "ecl", ext: ["ecl"]},
+    {name: "edn", mime: "application/edn", mode: "clojure", ext: ["edn"]},
+    {name: "Eiffel", mime: "text/x-eiffel", mode: "eiffel", ext: ["e"]},
+    {name: "Elm", mime: "text/x-elm", mode: "elm", ext: ["elm"]},
+    {name: "Embedded Javascript", mime: "application/x-ejs", mode: "htmlembedded", ext: ["ejs"]},
+    {name: "Embedded Ruby", mime: "application/x-erb", mode: "htmlembedded", ext: ["erb"]},
+    {name: "Erlang", mime: "text/x-erlang", mode: "erlang", ext: ["erl"]},
+    {name: "Factor", mime: "text/x-factor", mode: "factor", ext: ["factor"]},
+    {name: "FCL", mime: "text/x-fcl", mode: "fcl"},
+    {name: "Forth", mime: "text/x-forth", mode: "forth", ext: ["forth", "fth", "4th"]},
+    {name: "Fortran", mime: "text/x-fortran", mode: "fortran", ext: ["f", "for", "f77", "f90"]},
+    {name: "F#", mime: "text/x-fsharp", mode: "mllike", ext: ["fs"], alias: ["fsharp"]},
+    {name: "Gas", mime: "text/x-gas", mode: "gas", ext: ["s"]},
+    {name: "Gherkin", mime: "text/x-feature", mode: "gherkin", ext: ["feature"]},
+    {name: "GitHub Flavored Markdown", mime: "text/x-gfm", mode: "gfm", file: /^(readme|contributing|history).md$/i},
+    {name: "Go", mime: "text/x-go", mode: "go", ext: ["go"]},
+    {name: "Groovy", mime: "text/x-groovy", mode: "groovy", ext: ["groovy", "gradle"]},
+    {name: "HAML", mime: "text/x-haml", mode: "haml", ext: ["haml"]},
+    {name: "Haskell", mime: "text/x-haskell", mode: "haskell", ext: ["hs"]},
+    {name: "Haskell (Literate)", mime: "text/x-literate-haskell", mode: "haskell-literate", ext: ["lhs"]},
+    {name: "Haxe", mime: "text/x-haxe", mode: "haxe", ext: ["hx"]},
+    {name: "HXML", mime: "text/x-hxml", mode: "haxe", ext: ["hxml"]},
+    {name: "ASP.NET", mime: "application/x-aspx", mode: "htmlembedded", ext: ["aspx"], alias: ["asp", "aspx"]},
+    {name: "HTML", mime: "text/html", mode: "htmlmixed", ext: ["html", "htm"], alias: ["xhtml"]},
+    {name: "HTTP", mime: "message/http", mode: "http"},
+    {name: "IDL", mime: "text/x-idl", mode: "idl", ext: ["pro"]},
+    {name: "Pug", mime: "text/x-pug", mode: "pug", ext: ["jade", "pug"], alias: ["jade"]},
+    {name: "Java", mime: "text/x-java", mode: "clike", ext: ["java"]},
+    {name: "Java Server Pages", mime: "application/x-jsp", mode: "htmlembedded", ext: ["jsp"], alias: ["jsp"]},
+    {name: "JavaScript", mimes: ["text/javascript", "text/ecmascript", "application/javascript", "application/x-javascript", "application/ecmascript"],
+     mode: "javascript", ext: ["js"], alias: ["ecmascript", "js", "node"]},
+    {name: "JSON", mimes: ["application/json", "application/x-json"], mode: "javascript", ext: ["json", "map"], alias: ["json5"]},
+    {name: "JSON-LD", mime: "application/ld+json", mode: "javascript", ext: ["jsonld"], alias: ["jsonld"]},
+    {name: "JSX", mime: "text/jsx", mode: "jsx", ext: ["jsx"]},
+    {name: "Jinja2", mime: "null", mode: "jinja2"},
+    {name: "Julia", mime: "text/x-julia", mode: "julia", ext: ["jl"]},
+    {name: "Kotlin", mime: "text/x-kotlin", mode: "clike", ext: ["kt"]},
+    {name: "LESS", mime: "text/x-less", mode: "css", ext: ["less"]},
+    {name: "LiveScript", mime: "text/x-livescript", mode: "livescript", ext: ["ls"], alias: ["ls"]},
+    {name: "Lua", mime: "text/x-lua", mode: "lua", ext: ["lua"]},
+    {name: "Markdown", mime: "text/x-markdown", mode: "markdown", ext: ["markdown", "md", "mkd"]},
+    {name: "mIRC", mime: "text/mirc", mode: "mirc"},
+    {name: "MariaDB SQL", mime: "text/x-mariadb", mode: "sql"},
+    {name: "Mathematica", mime: "text/x-mathematica", mode: "mathematica", ext: ["m", "nb"]},
+    {name: "Modelica", mime: "text/x-modelica", mode: "modelica", ext: ["mo"]},
+    {name: "MUMPS", mime: "text/x-mumps", mode: "mumps", ext: ["mps"]},
+    {name: "MS SQL", mime: "text/x-mssql", mode: "sql"},
+    {name: "mbox", mime: "application/mbox", mode: "mbox", ext: ["mbox"]},
+    {name: "MySQL", mime: "text/x-mysql", mode: "sql"},
+    {name: "Nginx", mime: "text/x-nginx-conf", mode: "nginx", file: /nginx.*\.conf$/i},
+    {name: "NSIS", mime: "text/x-nsis", mode: "nsis", ext: ["nsh", "nsi"]},
+    {name: "NTriples", mime: "text/n-triples", mode: "ntriples", ext: ["nt"]},
+    {name: "Objective C", mime: "text/x-objectivec", mode: "clike", ext: ["m", "mm"], alias: ["objective-c", "objc"]},
+    {name: "OCaml", mime: "text/x-ocaml", mode: "mllike", ext: ["ml", "mli", "mll", "mly"]},
+    {name: "Octave", mime: "text/x-octave", mode: "octave", ext: ["m"]},
+    {name: "Oz", mime: "text/x-oz", mode: "oz", ext: ["oz"]},
+    {name: "Pascal", mime: "text/x-pascal", mode: "pascal", ext: ["p", "pas"]},
+    {name: "PEG.js", mime: "null", mode: "pegjs", ext: ["jsonld"]},
+    {name: "Perl", mime: "text/x-perl", mode: "perl", ext: ["pl", "pm"]},
+    {name: "PHP", mime: "application/x-httpd-php", mode: "php", ext: ["php", "php3", "php4", "php5", "phtml"]},
+    {name: "Pig", mime: "text/x-pig", mode: "pig", ext: ["pig"]},
+    {name: "Plain Text", mime: "text/plain", mode: "null", ext: ["txt", "text", "conf", "def", "list", "log"]},
+    {name: "PLSQL", mime: "text/x-plsql", mode: "sql", ext: ["pls"]},
+    {name: "PowerShell", mime: "application/x-powershell", mode: "powershell", ext: ["ps1", "psd1", "psm1"]},
+    {name: "Properties files", mime: "text/x-properties", mode: "properties", ext: ["properties", "ini", "in"], alias: ["ini", "properties"]},
+    {name: "ProtoBuf", mime: "text/x-protobuf", mode: "protobuf", ext: ["proto"]},
+    {name: "Python", mime: "text/x-python", mode: "python", ext: ["BUILD", "bzl", "py", "pyw"], file: /^(BUCK|BUILD)$/},
+    {name: "Puppet", mime: "text/x-puppet", mode: "puppet", ext: ["pp"]},
+    {name: "Q", mime: "text/x-q", mode: "q", ext: ["q"]},
+    {name: "R", mime: "text/x-rsrc", mode: "r", ext: ["r"], alias: ["rscript"]},
+    {name: "reStructuredText", mime: "text/x-rst", mode: "rst", ext: ["rst"], alias: ["rst"]},
+    {name: "RPM Changes", mime: "text/x-rpm-changes", mode: "rpm"},
+    {name: "RPM Spec", mime: "text/x-rpm-spec", mode: "rpm", ext: ["spec"]},
+    {name: "Ruby", mime: "text/x-ruby", mode: "ruby", ext: ["rb"], alias: ["jruby", "macruby", "rake", "rb", "rbx"]},
+    {name: "Rust", mime: "text/x-rustsrc", mode: "rust", ext: ["rs"]},
+    {name: "SAS", mime: "text/x-sas", mode: "sas", ext: ["sas"]},
+    {name: "Sass", mime: "text/x-sass", mode: "sass", ext: ["sass"]},
+    {name: "Scala", mime: "text/x-scala", mode: "clike", ext: ["scala"]},
+    {name: "Scheme", mime: "text/x-scheme", mode: "scheme", ext: ["scm", "ss"]},
+    {name: "SCSS", mime: "text/x-scss", mode: "css", ext: ["scss"]},
+    {name: "Shell", mime: "text/x-sh", mode: "shell", ext: ["sh", "ksh", "bash"], alias: ["bash", "sh", "zsh"], file: /^PKGBUILD$/},
+    {name: "Sieve", mime: "application/sieve", mode: "sieve", ext: ["siv", "sieve"]},
+    {name: "Slim", mimes: ["text/x-slim", "application/x-slim"], mode: "slim", ext: ["slim"]},
+    {name: "Smalltalk", mime: "text/x-stsrc", mode: "smalltalk", ext: ["st"]},
+    {name: "Smarty", mime: "text/x-smarty", mode: "smarty", ext: ["tpl"]},
+    {name: "Solr", mime: "text/x-solr", mode: "solr"},
+    {name: "Soy", mime: "text/x-soy", mode: "soy", ext: ["soy"], alias: ["closure template"]},
+    {name: "SPARQL", mime: "application/sparql-query", mode: "sparql", ext: ["rq", "sparql"], alias: ["sparul"]},
+    {name: "Spreadsheet", mime: "text/x-spreadsheet", mode: "spreadsheet", alias: ["excel", "formula"]},
+    {name: "SQL", mime: "text/x-sql", mode: "sql", ext: ["sql"]},
+    {name: "Squirrel", mime: "text/x-squirrel", mode: "clike", ext: ["nut"]},
+    {name: "Swift", mime: "text/x-swift", mode: "swift", ext: ["swift"]},
+    {name: "sTeX", mime: "text/x-stex", mode: "stex"},
+    {name: "LaTeX", mime: "text/x-latex", mode: "stex", ext: ["text", "ltx"], alias: ["tex"]},
+    {name: "SystemVerilog", mime: "text/x-systemverilog", mode: "verilog", ext: ["v"]},
+    {name: "Tcl", mime: "text/x-tcl", mode: "tcl", ext: ["tcl"]},
+    {name: "Textile", mime: "text/x-textile", mode: "textile", ext: ["textile"]},
+    {name: "TiddlyWiki ", mime: "text/x-tiddlywiki", mode: "tiddlywiki"},
+    {name: "Tiki wiki", mime: "text/tiki", mode: "tiki"},
+    {name: "TOML", mime: "text/x-toml", mode: "toml", ext: ["toml"]},
+    {name: "Tornado", mime: "text/x-tornado", mode: "tornado"},
+    {name: "troff", mime: "text/troff", mode: "troff", ext: ["1", "2", "3", "4", "5", "6", "7", "8", "9"]},
+    {name: "TTCN", mime: "text/x-ttcn", mode: "ttcn", ext: ["ttcn", "ttcn3", "ttcnpp"]},
+    {name: "TTCN_CFG", mime: "text/x-ttcn-cfg", mode: "ttcn-cfg", ext: ["cfg"]},
+    {name: "Turtle", mime: "text/turtle", mode: "turtle", ext: ["ttl"]},
+    {name: "TypeScript", mime: "application/typescript", mode: "javascript", ext: ["ts"], alias: ["ts"]},
+    {name: "Twig", mime: "text/x-twig", mode: "twig"},
+    {name: "Web IDL", mime: "text/x-webidl", mode: "webidl", ext: ["webidl"]},
+    {name: "VB.NET", mime: "text/x-vb", mode: "vb", ext: ["vb"]},
+    {name: "VBScript", mime: "text/vbscript", mode: "vbscript", ext: ["vbs"]},
+    {name: "Velocity", mime: "text/velocity", mode: "velocity", ext: ["vtl"]},
+    {name: "Verilog", mime: "text/x-verilog", mode: "verilog", ext: ["v"]},
+    {name: "VHDL", mime: "text/x-vhdl", mode: "vhdl", ext: ["vhd", "vhdl"]},
+    {name: "XML", mimes: ["application/xml", "text/xml"], mode: "xml", ext: ["xml", "xsl", "xsd"], alias: ["rss", "wsdl", "xsd"]},
+    {name: "XQuery", mime: "application/xquery", mode: "xquery", ext: ["xy", "xquery"]},
+    {name: "Yacas", mime: "text/x-yacas", mode: "yacas", ext: ["ys"]},
+    {name: "YAML", mime: "text/x-yaml", mode: "yaml", ext: ["yaml", "yml"], alias: ["yml"]},
+    {name: "Z80", mime: "text/x-z80", mode: "z80", ext: ["z80"]},
+    {name: "mscgen", mime: "text/x-mscgen", mode: "mscgen", ext: ["mscgen", "mscin", "msc"]},
+    {name: "xu", mime: "text/x-xu", mode: "mscgen", ext: ["xu"]},
+    {name: "msgenny", mime: "text/x-msgenny", mode: "mscgen", ext: ["msgenny"]}
+  ];
+  // Ensure all modes have a mime property for backwards compatibility
+  for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
+    var info = CodeMirror.modeInfo[i];
+    if (info.mimes) info.mime = info.mimes[0];
+  }
+
+  CodeMirror.findModeByMIME = function(mime) {
+    mime = mime.toLowerCase();
+    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
+      var info = CodeMirror.modeInfo[i];
+      if (info.mime == mime) return info;
+      if (info.mimes) for (var j = 0; j < info.mimes.length; j++)
+        if (info.mimes[j] == mime) return info;
+    }
+  };
+
+  CodeMirror.findModeByExtension = function(ext) {
+    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
+      var info = CodeMirror.modeInfo[i];
+      if (info.ext) for (var j = 0; j < info.ext.length; j++)
+        if (info.ext[j] == ext) return info;
+    }
+  };
+
+  CodeMirror.findModeByFileName = function(filename) {
+    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
+      var info = CodeMirror.modeInfo[i];
+      if (info.file && info.file.test(filename)) return info;
+    }
+    var dot = filename.lastIndexOf(".");
+    var ext = dot > -1 && filename.substring(dot + 1, filename.length);
+    if (ext) return CodeMirror.findModeByExtension(ext);
+  };
+
+  CodeMirror.findModeByName = function(name) {
+    name = name.toLowerCase();
+    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
+      var info = CodeMirror.modeInfo[i];
+      if (info.name.toLowerCase() == name) return info;
+      if (info.alias) for (var j = 0; j < info.alias.length; j++)
+        if (info.alias[j].toLowerCase() == name) return info;
+    }
+  };
+});
diff --git a/vendor/assets/javascripts/codemirror/modes/mscgen_test.js b/vendor/assets/javascripts/codemirror/modes/mscgen_test.js
new file mode 100644
index 0000000..e319a39
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/mscgen_test.js
@@ -0,0 +1,75 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 2}, "mscgen");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1)); }
+
+  MT("empty chart",
+     "[keyword msc][bracket {]",
+     "[base   ]",
+     "[bracket }]"
+   );
+
+  MT("comments",
+    "[comment // a single line comment]",
+    "[comment # another  single line comment /* and */ ignored here]",
+    "[comment /* A multi-line comment even though it contains]",
+    "[comment msc keywords and \"quoted text\"*/]");
+
+  MT("strings",
+    "[string \"// a string\"]",
+    "[string \"a string running over]",
+    "[string two lines\"]",
+    "[string \"with \\\"escaped quote\"]"
+  );
+
+  MT("xù/ msgenny keywords classify as 'base'",
+    "[base watermark]",
+    "[base alt loop opt ref else break par seq assert]"
+  );
+
+  MT("mscgen options classify as keyword",
+    "[keyword hscale]", "[keyword width]", "[keyword arcgradient]", "[keyword wordwraparcs]"
+  );
+
+  MT("mscgen arcs classify as keyword",
+    "[keyword note]","[keyword abox]","[keyword rbox]","[keyword box]",
+    "[keyword |||...---]", "[keyword ..--==::]",
+    "[keyword ->]", "[keyword <-]", "[keyword <->]",
+    "[keyword =>]", "[keyword <=]", "[keyword <=>]",
+    "[keyword =>>]", "[keyword <<=]", "[keyword <<=>>]",
+    "[keyword >>]", "[keyword <<]", "[keyword <<>>]",
+    "[keyword -x]", "[keyword x-]", "[keyword -X]", "[keyword X-]",
+    "[keyword :>]", "[keyword <:]", "[keyword <:>]"
+  );
+
+  MT("within an attribute list, attributes classify as attribute",
+    "[bracket [[][attribute label]",
+    "[attribute id]","[attribute url]","[attribute idurl]",
+    "[attribute linecolor]","[attribute linecolour]","[attribute textcolor]","[attribute textcolour]","[attribute textbgcolor]","[attribute textbgcolour]",
+    "[attribute arclinecolor]","[attribute arclinecolour]","[attribute arctextcolor]","[attribute arctextcolour]","[attribute arctextbgcolor]","[attribute arctextbgcolour]",
+    "[attribute arcskip][bracket ]]]"
+  );
+
+  MT("outside an attribute list, attributes classify as base",
+    "[base label]",
+    "[base id]","[base url]","[base idurl]",
+    "[base linecolor]","[base linecolour]","[base textcolor]","[base textcolour]","[base textbgcolor]","[base textbgcolour]",
+    "[base arclinecolor]","[base arclinecolour]","[base arctextcolor]","[base arctextcolour]","[base arctextbgcolor]","[base arctextbgcolour]",
+    "[base arcskip]"
+  );
+
+  MT("a typical program",
+    "[comment # typical mscgen program]",
+    "[keyword msc][base  ][bracket {]",
+    "[keyword wordwraparcs][operator =][string \"true\"][base , ][keyword hscale][operator =][string \"0.8\"][keyword arcgradient][operator =][base 30;]",
+    "[base   a][bracket [[][attribute label][operator =][string \"Entity A\"][bracket ]]][base ,]",
+    "[base   b][bracket [[][attribute label][operator =][string \"Entity B\"][bracket ]]][base ,]",
+    "[base   c][bracket [[][attribute label][operator =][string \"Entity C\"][bracket ]]][base ;]",
+    "[base   a ][keyword =>>][base  b][bracket [[][attribute label][operator =][string \"Hello entity B\"][bracket ]]][base ;]",
+    "[base   a ][keyword <<][base  b][bracket [[][attribute label][operator =][string \"Here's an answer dude!\"][bracket ]]][base ;]",
+    "[base   c ][keyword :>][base  *][bracket [[][attribute label][operator =][string \"What about me?\"][base , ][attribute textcolor][operator =][base red][bracket ]]][base ;]",
+    "[bracket }]"
+  );
+})();
diff --git a/vendor/assets/javascripts/codemirror/modes/msgenny_test.js b/vendor/assets/javascripts/codemirror/modes/msgenny_test.js
new file mode 100644
index 0000000..80173de
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/msgenny_test.js
@@ -0,0 +1,71 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 2}, "text/x-msgenny");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1), "msgenny"); }
+
+  MT("comments",
+    "[comment // a single line comment]",
+    "[comment # another  single line comment /* and */ ignored here]",
+    "[comment /* A multi-line comment even though it contains]",
+    "[comment msc keywords and \"quoted text\"*/]");
+
+  MT("strings",
+    "[string \"// a string\"]",
+    "[string \"a string running over]",
+    "[string two lines\"]",
+    "[string \"with \\\"escaped quote\"]"
+  );
+
+  MT("xù/ msgenny keywords classify as 'keyword'",
+    "[keyword watermark]",
+    "[keyword alt]","[keyword loop]","[keyword opt]","[keyword ref]","[keyword else]","[keyword break]","[keyword par]","[keyword seq]","[keyword assert]"
+  );
+
+  MT("mscgen options classify as keyword",
+    "[keyword hscale]", "[keyword width]", "[keyword arcgradient]", "[keyword wordwraparcs]"
+  );
+
+  MT("mscgen arcs classify as keyword",
+    "[keyword note]","[keyword abox]","[keyword rbox]","[keyword box]",
+    "[keyword |||...---]", "[keyword ..--==::]",
+    "[keyword ->]", "[keyword <-]", "[keyword <->]",
+    "[keyword =>]", "[keyword <=]", "[keyword <=>]",
+    "[keyword =>>]", "[keyword <<=]", "[keyword <<=>>]",
+    "[keyword >>]", "[keyword <<]", "[keyword <<>>]",
+    "[keyword -x]", "[keyword x-]", "[keyword -X]", "[keyword X-]",
+    "[keyword :>]", "[keyword <:]", "[keyword <:>]"
+  );
+
+  MT("within an attribute list, mscgen/ xù attributes classify as base",
+    "[base [[label]",
+    "[base idurl id url]",
+    "[base linecolor linecolour textcolor textcolour textbgcolor textbgcolour]",
+    "[base arclinecolor arclinecolour arctextcolor arctextcolour arctextbgcolor arctextbgcolour]",
+    "[base arcskip]]]"
+  );
+
+  MT("outside an attribute list, mscgen/ xù attributes classify as base",
+    "[base label]",
+    "[base idurl id url]",
+    "[base linecolor linecolour textcolor textcolour textbgcolor textbgcolour]",
+    "[base arclinecolor arclinecolour arctextcolor arctextcolour arctextbgcolor arctextbgcolour]",
+    "[base arcskip]"
+  );
+
+  MT("a typical program",
+    "[comment # typical msgenny program]",
+    "[keyword wordwraparcs][operator =][string \"true\"][base , ][keyword hscale][operator =][string \"0.8\"][base , ][keyword arcgradient][operator =][base 30;]",
+    "[base   a : ][string \"Entity A\"][base ,]",
+    "[base   b : Entity B,]",
+    "[base   c : Entity C;]",
+    "[base   a ][keyword =>>][base  b: ][string \"Hello entity B\"][base ;]",
+    "[base   a ][keyword alt][base  c][bracket {]",
+    "[base     a ][keyword <<][base  b: ][string \"Here's an answer dude!\"][base ;]",
+    "[keyword ---][base : ][string \"sorry, won't march - comm glitch\"]",
+    "[base     a ][keyword x-][base  b: ][string \"Here's an answer dude! (won't arrive...)\"][base ;]",
+    "[bracket }]",
+    "[base   c ][keyword :>][base  *: What about me?;]"
+  );
+})();
diff --git a/vendor/assets/javascripts/codemirror/modes/jade.js b/vendor/assets/javascripts/codemirror/modes/pug.js
similarity index 99%
rename from vendor/assets/javascripts/codemirror/modes/jade.js
rename to vendor/assets/javascripts/codemirror/modes/pug.js
index 51ed105..4018233 100644
--- a/vendor/assets/javascripts/codemirror/modes/jade.js
+++ b/vendor/assets/javascripts/codemirror/modes/pug.js
@@ -11,7 +11,7 @@
 })(function(CodeMirror) {
 "use strict";
 
-CodeMirror.defineMode('jade', function (config) {
+CodeMirror.defineMode("pug", function (config) {
   // token types
   var KEYWORD = 'keyword';
   var DOCTYPE = 'meta';
@@ -585,6 +585,7 @@ CodeMirror.defineMode('jade', function (config) {
   };
 }, 'javascript', 'css', 'htmlmixed');
 
-CodeMirror.defineMIME('text/x-jade', 'jade');
+CodeMirror.defineMIME('text/x-pug', 'pug');
+CodeMirror.defineMIME('text/x-jade', 'pug');
 
 });
diff --git a/vendor/assets/javascripts/codemirror/modes/python.js b/vendor/assets/javascripts/codemirror/modes/python.js
index ec662b1..efeed7f 100644
--- a/vendor/assets/javascripts/codemirror/modes/python.js
+++ b/vendor/assets/javascripts/codemirror/modes/python.js
@@ -55,7 +55,7 @@
     if (parserConf.extra_builtins != undefined)
       myBuiltins = myBuiltins.concat(parserConf.extra_builtins);
 
-    var py3 = parserConf.version && parseInt(parserConf.version, 10) == 3
+    var py3 = !(parserConf.version && Number(parserConf.version) < 3)
     if (py3) {
       // since http://legacy.python.org/dev/peps/pep-0465/ @ is also an operator
       var singleOperators = parserConf.singleOperators || /^[\+\-\*\/%&|\^~<>!@]/;
@@ -185,7 +185,7 @@
     }
 
     function tokenStringFactory(delimiter) {
-      while ("rub".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
+      while ("rubf".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
         delimiter = delimiter.substr(1);
 
       var singleline = delimiter.length == 1;
@@ -233,7 +233,7 @@
 
     function dedent(stream, state) {
       var indented = stream.indentation();
-      while (top(state).offset > indented) {
+      while (state.scopes.length > 1 && top(state).offset > indented) {
         if (top(state).type != "py") return true;
         state.scopes.pop();
       }
diff --git a/vendor/assets/javascripts/codemirror/modes/sas.js b/vendor/assets/javascripts/codemirror/modes/sas.js
index fe11482..a6109eb 100755
--- a/vendor/assets/javascripts/codemirror/modes/sas.js
+++ b/vendor/assets/javascripts/codemirror/modes/sas.js
@@ -137,12 +137,13 @@
           stream.next();
           return 'comment';
         }
-      } else if (!state.continueString && (ch === '"' || ch === "'")) {
-        // Have we found a string?
-        state.continueString = ch; //save the matching quote in the state
-        return "string";
-      } else if (state.continueString !== null) {
-        if (stream.skipTo(state.continueString)) {
+      } else if ((ch === '"' || ch === "'") && !state.continueString) {
+        state.continueString = ch
+        return "string"
+      } else if (state.continueString) {
+        if (state.continueString == ch) {
+          state.continueString = null;
+        } else if (stream.skipTo(state.continueString)) {
           // quote found on this line
           stream.next();
           state.continueString = null;
@@ -187,12 +188,12 @@
         if (stream.peek() === '.') stream.skipTo(' ');
         state.nextword = false;
         return 'variable-2';
-
       }
 
+      word = word.toLowerCase()
       // Are we in a DATA Step?
       if (state.inDataStep) {
-        if (word.toLowerCase() === 'run;' || stream.match(/run\s;/)) {
+        if (word === 'run;' || stream.match(/run\s;/)) {
           state.inDataStep = false;
           return 'builtin';
         }
@@ -203,84 +204,84 @@
           else return 'variable';
         }
         // do we have a DATA Step keyword
-        if (word && words.hasOwnProperty(word.toLowerCase()) &&
-            (words[word.toLowerCase()].state.indexOf("inDataStep") !== -1 ||
-             words[word.toLowerCase()].state.indexOf("ALL") !== -1)) {
+        if (word && words.hasOwnProperty(word) &&
+            (words[word].state.indexOf("inDataStep") !== -1 ||
+             words[word].state.indexOf("ALL") !== -1)) {
           //backup to the start of the word
           if (stream.start < stream.pos)
             stream.backUp(stream.pos - stream.start);
           //advance the length of the word and return
           for (var i = 0; i < word.length; ++i) stream.next();
-          return words[word.toLowerCase()].style;
+          return words[word].style;
         }
       }
       // Are we in an Proc statement?
       if (state.inProc) {
-        if (word.toLowerCase() === 'run;' || word.toLowerCase() === 'quit;') {
+        if (word === 'run;' || word === 'quit;') {
           state.inProc = false;
           return 'builtin';
         }
         // do we have a proc keyword
-        if (word && words.hasOwnProperty(word.toLowerCase()) &&
-            (words[word.toLowerCase()].state.indexOf("inProc") !== -1 ||
-             words[word.toLowerCase()].state.indexOf("ALL") !== -1)) {
+        if (word && words.hasOwnProperty(word) &&
+            (words[word].state.indexOf("inProc") !== -1 ||
+             words[word].state.indexOf("ALL") !== -1)) {
           stream.match(/[\w]+/);
           return words[word].style;
         }
       }
       // Are we in a Macro statement?
       if (state.inMacro) {
-        if (word.toLowerCase() === '%mend') {
+        if (word === '%mend') {
           if (stream.peek() === ';') stream.next();
           state.inMacro = false;
           return 'builtin';
         }
-        if (word && words.hasOwnProperty(word.toLowerCase()) &&
-            (words[word.toLowerCase()].state.indexOf("inMacro") !== -1 ||
-             words[word.toLowerCase()].state.indexOf("ALL") !== -1)) {
+        if (word && words.hasOwnProperty(word) &&
+            (words[word].state.indexOf("inMacro") !== -1 ||
+             words[word].state.indexOf("ALL") !== -1)) {
           stream.match(/[\w]+/);
-          return words[word.toLowerCase()].style;
+          return words[word].style;
         }
 
         return 'atom';
       }
       // Do we have Keywords specific words?
-      if (word && words.hasOwnProperty(word.toLowerCase())) {
+      if (word && words.hasOwnProperty(word)) {
         // Negates the initial next()
         stream.backUp(1);
         // Actually move the stream
         stream.match(/[\w]+/);
-        if (word.toLowerCase() === 'data' && /=/.test(stream.peek()) === false) {
+        if (word === 'data' && /=/.test(stream.peek()) === false) {
           state.inDataStep = true;
           state.nextword = true;
           return 'builtin';
         }
-        if (word.toLowerCase() === 'proc') {
+        if (word === 'proc') {
           state.inProc = true;
           state.nextword = true;
           return 'builtin';
         }
-        if (word.toLowerCase() === '%macro') {
+        if (word === '%macro') {
           state.inMacro = true;
           state.nextword = true;
           return 'builtin';
         }
-        if (/title[1-9]/i.test(word)) return 'def';
+        if (/title[1-9]/.test(word)) return 'def';
 
-        if (word.toLowerCase() === 'footnote') {
+        if (word === 'footnote') {
           stream.eat(/[1-9]/);
           return 'def';
         }
 
         // Returns their value as state in the prior define methods
-        if (state.inDataStep === true && words[word.toLowerCase()].state.indexOf("inDataStep") !== -1)
-          return words[word.toLowerCase()].style;
-        if (state.inProc === true && words[word.toLowerCase()].state.indexOf("inProc") !== -1)
-          return words[word.toLowerCase()].style;
-        if (state.inMacro === true && words[word.toLowerCase()].state.indexOf("inMacro") !== -1)
-          return words[word.toLowerCase()].style;
-        if (words[word.toLowerCase()].state.indexOf("ALL") !== -1)
-          return words[word.toLowerCase()].style;
+        if (state.inDataStep === true && words[word].state.indexOf("inDataStep") !== -1)
+          return words[word].style;
+        if (state.inProc === true && words[word].state.indexOf("inProc") !== -1)
+          return words[word].style;
+        if (state.inMacro === true && words[word].state.indexOf("inMacro") !== -1)
+          return words[word].style;
+        if (words[word].state.indexOf("ALL") !== -1)
+          return words[word].style;
         return null;
       }
       // Unrecognized syntax
diff --git a/vendor/assets/javascripts/codemirror/modes/scss_test.js b/vendor/assets/javascripts/codemirror/modes/scss_test.js
new file mode 100644
index 0000000..785921b
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/scss_test.js
@@ -0,0 +1,110 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 2}, "text/x-scss");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1), "scss"); }
+
+  MT('url_with_quotation',
+    "[tag foo] { [property background]:[atom url]([string test.jpg]) }");
+
+  MT('url_with_double_quotes',
+    "[tag foo] { [property background]:[atom url]([string \"test.jpg\"]) }");
+
+  MT('url_with_single_quotes',
+    "[tag foo] { [property background]:[atom url]([string \'test.jpg\']) }");
+
+  MT('string',
+    "[def @import] [string \"compass/css3\"]");
+
+  MT('important_keyword',
+    "[tag foo] { [property background]:[atom url]([string \'test.jpg\']) [keyword !important] }");
+
+  MT('variable',
+    "[variable-2 $blue]:[atom #333]");
+
+  MT('variable_as_attribute',
+    "[tag foo] { [property color]:[variable-2 $blue] }");
+
+  MT('numbers',
+    "[tag foo] { [property padding]:[number 10px] [number 10] [number 10em] [number 8in] }");
+
+  MT('number_percentage',
+    "[tag foo] { [property width]:[number 80%] }");
+
+  MT('selector',
+    "[builtin #hello][qualifier .world]{}");
+
+  MT('singleline_comment',
+    "[comment // this is a comment]");
+
+  MT('multiline_comment',
+    "[comment /*foobar*/]");
+
+  MT('attribute_with_hyphen',
+    "[tag foo] { [property font-size]:[number 10px] }");
+
+  MT('string_after_attribute',
+    "[tag foo] { [property content]:[string \"::\"] }");
+
+  MT('directives',
+    "[def @include] [qualifier .mixin]");
+
+  MT('basic_structure',
+    "[tag p] { [property background]:[keyword red]; }");
+
+  MT('nested_structure',
+    "[tag p] { [tag a] { [property color]:[keyword red]; } }");
+
+  MT('mixin',
+    "[def @mixin] [tag table-base] {}");
+
+  MT('number_without_semicolon',
+    "[tag p] {[property width]:[number 12]}",
+    "[tag a] {[property color]:[keyword red];}");
+
+  MT('atom_in_nested_block',
+    "[tag p] { [tag a] { [property color]:[atom #000]; } }");
+
+  MT('interpolation_in_property',
+    "[tag foo] { #{[variable-2 $hello]}:[number 2]; }");
+
+  MT('interpolation_in_selector',
+    "[tag foo]#{[variable-2 $hello]} { [property color]:[atom #000]; }");
+
+  MT('interpolation_error',
+    "[tag foo]#{[variable foo]} { [property color]:[atom #000]; }");
+
+  MT("divide_operator",
+    "[tag foo] { [property width]:[number 4] [operator /] [number 2] }");
+
+  MT('nested_structure_with_id_selector',
+    "[tag p] { [builtin #hello] { [property color]:[keyword red]; } }");
+
+  MT('indent_mixin',
+     "[def @mixin] [tag container] (",
+     "  [variable-2 $a]: [number 10],",
+     "  [variable-2 $b]: [number 10])",
+     "{}");
+
+  MT('indent_nested',
+     "[tag foo] {",
+     "  [tag bar] {",
+     "  }",
+     "}");
+
+  MT('indent_parentheses',
+     "[tag foo] {",
+     "  [property color]: [atom darken]([variable-2 $blue],",
+     "    [number 9%]);",
+     "}");
+
+  MT('indent_vardef',
+     "[variable-2 $name]:",
+     "  [string 'val'];",
+     "[tag tag] {",
+     "  [tag inner] {",
+     "    [property margin]: [number 3px];",
+     "  }",
+     "}");
+})();
diff --git a/vendor/assets/javascripts/codemirror/modes/vue.js b/vendor/assets/javascripts/codemirror/modes/vue.js
index d89a552..f8089af 100644
--- a/vendor/assets/javascripts/codemirror/modes/vue.js
+++ b/vendor/assets/javascripts/codemirror/modes/vue.js
@@ -12,7 +12,7 @@
         require("../css/css"),
         require("../sass/sass"),
         require("../stylus/stylus"),
-        require("../jade/jade"),
+        require("../pug/pug"),
         require("../handlebars/handlebars"));
   } else if (typeof define === "function" && define.amd) { // AMD
     define(["../../lib/codemirror",
@@ -23,7 +23,7 @@
             "../css/css",
             "../sass/sass",
             "../stylus/stylus",
-            "../jade/jade",
+            "../pug/pug",
             "../handlebars/handlebars"], mod);
   } else { // Plain browser env
     mod(CodeMirror);
@@ -42,9 +42,9 @@
     ],
     template: [
       ["lang", /^vue-template$/i, "vue"],
-      ["lang", /^jade$/i, "jade"],
+      ["lang", /^pug$/i, "pug"],
       ["lang", /^handlebars$/i, "handlebars"],
-      ["type", /^(text\/)?(x-)?jade$/i, "jade"],
+      ["type", /^(text\/)?(x-)?pug$/i, "pug"],
       ["type", /^text\/x-handlebars-template$/i, "handlebars"],
       [null, null, "vue-template"]
     ]
@@ -63,7 +63,7 @@
 
   CodeMirror.defineMode("vue", function (config) {
     return CodeMirror.getMode(config, {name: "htmlmixed", tags: tagLanguages});
-  }, "htmlmixed", "xml", "javascript", "coffeescript", "css", "sass", "stylus", "jade", "handlebars");
+  }, "htmlmixed", "xml", "javascript", "coffeescript", "css", "sass", "stylus", "pug", "handlebars");
 
   CodeMirror.defineMIME("script/x-vue", "vue");
 });
diff --git a/vendor/assets/javascripts/codemirror/modes/xu_test.js b/vendor/assets/javascripts/codemirror/modes/xu_test.js
new file mode 100644
index 0000000..f9a50f0
--- /dev/null
+++ b/vendor/assets/javascripts/codemirror/modes/xu_test.js
@@ -0,0 +1,75 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 2}, "text/x-xu");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1), "xu"); }
+
+  MT("empty chart",
+     "[keyword msc][bracket {]",
+     "[base   ]",
+     "[bracket }]"
+   );
+
+  MT("comments",
+    "[comment // a single line comment]",
+    "[comment # another  single line comment /* and */ ignored here]",
+    "[comment /* A multi-line comment even though it contains]",
+    "[comment msc keywords and \"quoted text\"*/]");
+
+  MT("strings",
+    "[string \"// a string\"]",
+    "[string \"a string running over]",
+    "[string two lines\"]",
+    "[string \"with \\\"escaped quote\"]"
+  );
+
+  MT("xù/ msgenny keywords classify as 'keyword'",
+    "[keyword watermark]",
+    "[keyword alt]","[keyword loop]","[keyword opt]","[keyword ref]","[keyword else]","[keyword break]","[keyword par]","[keyword seq]","[keyword assert]"
+  );
+
+  MT("mscgen options classify as keyword",
+    "[keyword hscale]", "[keyword width]", "[keyword arcgradient]", "[keyword wordwraparcs]"
+  );
+
+  MT("mscgen arcs classify as keyword",
+    "[keyword note]","[keyword abox]","[keyword rbox]","[keyword box]",
+    "[keyword |||...---]", "[keyword ..--==::]",
+    "[keyword ->]", "[keyword <-]", "[keyword <->]",
+    "[keyword =>]", "[keyword <=]", "[keyword <=>]",
+    "[keyword =>>]", "[keyword <<=]", "[keyword <<=>>]",
+    "[keyword >>]", "[keyword <<]", "[keyword <<>>]",
+    "[keyword -x]", "[keyword x-]", "[keyword -X]", "[keyword X-]",
+    "[keyword :>]", "[keyword <:]", "[keyword <:>]"
+  );
+
+  MT("within an attribute list, attributes classify as attribute",
+    "[bracket [[][attribute label]",
+    "[attribute id]","[attribute url]","[attribute idurl]",
+    "[attribute linecolor]","[attribute linecolour]","[attribute textcolor]","[attribute textcolour]","[attribute textbgcolor]","[attribute textbgcolour]",
+    "[attribute arclinecolor]","[attribute arclinecolour]","[attribute arctextcolor]","[attribute arctextcolour]","[attribute arctextbgcolor]","[attribute arctextbgcolour]",
+    "[attribute arcskip][bracket ]]]"
+  );
+
+  MT("outside an attribute list, attributes classify as base",
+    "[base label]",
+    "[base id]","[base url]","[base idurl]",
+    "[base linecolor]","[base linecolour]","[base textcolor]","[base textcolour]","[base textbgcolor]","[base textbgcolour]",
+    "[base arclinecolor]","[base arclinecolour]","[base arctextcolor]","[base arctextcolour]","[base arctextbgcolor]","[base arctextbgcolour]",
+    "[base arcskip]"
+  );
+
+  MT("a typical program",
+    "[comment # typical mscgen program]",
+    "[keyword msc][base  ][bracket {]",
+    "[keyword wordwraparcs][operator =][string \"true\"][keyword hscale][operator =][string \"0.8\"][keyword arcgradient][operator =][base 30;]",
+    "[base   a][bracket [[][attribute label][operator =][string \"Entity A\"][bracket ]]][base ,]",
+    "[base   b][bracket [[][attribute label][operator =][string \"Entity B\"][bracket ]]][base ,]",
+    "[base   c][bracket [[][attribute label][operator =][string \"Entity C\"][bracket ]]][base ;]",
+    "[base   a ][keyword =>>][base  b][bracket [[][attribute label][operator =][string \"Hello entity B\"][bracket ]]][base ;]",
+    "[base   a ][keyword <<][base  b][bracket [[][attribute label][operator =][string \"Here's an answer dude!\"][bracket ]]][base ;]",
+    "[base   c ][keyword :>][base  *][bracket [[][attribute label][operator =][string \"What about me?\"][base , ][attribute textcolor][operator =][base red][bracket ]]][base ;]",
+    "[bracket }]"
+  );
+})();
diff --git a/vendor/assets/stylesheets/codemirror/addons/hint/show-hint.css b/vendor/assets/stylesheets/codemirror/addons/hint/show-hint.css
index 453dee4..5617ccc 100644
--- a/vendor/assets/stylesheets/codemirror/addons/hint/show-hint.css
+++ b/vendor/assets/stylesheets/codemirror/addons/hint/show-hint.css
@@ -16,7 +16,6 @@
   background: white;
   font-size: 90%;
   font-family: monospace;
-  max-width: 19em;
 
   max-height: 20em;
   overflow-y: auto;
diff --git a/vendor/assets/stylesheets/codemirror/themes/panda-syntax.css b/vendor/assets/stylesheets/codemirror/themes/panda-syntax.css
new file mode 100644
index 0000000..0e03500
--- /dev/null
+++ b/vendor/assets/stylesheets/codemirror/themes/panda-syntax.css
@@ -0,0 +1,94 @@
+/*
+
+	Name:       Panda Syntax
+	Author:     Siamak Mokhtari (http://github.com/siamak/)
+
+	CodeMirror template by Siamak Mokhtari (https://github.com/siamak/atom-panda-syntax)
+
+*/
+.cm-s-panda-syntax {
+	/*font-family: 'Operator Mono', 'Source Sans Pro', Helvetica, Arial, sans-serif;*/
+	font-family: 'Operator Mono', 'Source Sans Pro', Menlo, Monaco, Consolas, Courier New, monospace;
+	background: #292A2B;
+	color: #E6E6E6;
+}
+.cm-s-panda-syntax .CodeMirror-activeline-background {
+	background: #404954;
+}
+
+.cm-s-panda-syntax .cm-comment {
+	font-style: italic;
+	color: #676B79;
+}
+.cm-s-panda-syntax .cm-string,
+.cm-s-panda-syntax .cm-string-2 {
+	color: #19F9D8;
+}
+.cm-s-panda-syntax .cm-number {
+	color: #FFB86C;
+}
+.cm-s-panda-syntax .cm-atom {
+	color: #FFB86C;
+}
+
+.cm-s-panda-syntax .cm-keyword {
+	color: #FF75B5;
+}
+.cm-s-panda-syntax .cm-keyword-2 {
+	color: #FF75B5;
+}
+.cm-s-panda-syntax .cm-keyword-3 {
+	color: #B084EB;
+}
+
+.cm-s-panda-syntax .cm-variable {
+	color: #FF9AC1;
+}
+.cm-s-panda-syntax .cm-variable-2 {
+	color: #e6e6e6;
+}
+.cm-s-panda-syntax .cm-variable-3 {
+	color: #82B1FF;
+}
+
+.cm-s-panda-syntax .cm-def {
+	/*font-style: italic;*/
+	color: #e6e6e6;
+}
+.cm-s-panda-syntax .cm-def-2 {
+	font-style: italic;
+	color: #ffcc95;
+}
+
+
+.cm-s-panda-syntax .cm-property {
+	color: #6FC1FF;
+}
+
+.cm-s-panda-syntax .cm-matchingbracket,
+.CodeMirror .CodeMirror-matchingbracket {
+	color: #E6E6E6 !important;
+	border-bottom: 1px dotted #19f9d8;
+	padding-bottom: 2px;
+}
+
+.cm-s-panda-syntax .CodeMirror-gutters {
+	background: #292A2B;
+	color: #757575;
+	border: none;
+}
+.cm-s-panda-syntax .CodeMirror-guttermarker, .cm-s-panda-syntax .CodeMirror-guttermarker-subtle, .cm-s-panda-syntax .CodeMirror-linenumber {
+	color: #757575;
+}
+.cm-s-panda-syntax .CodeMirror-linenumber {
+	padding-right: 10px;
+}
+.cm-s-panda-syntax .CodeMirror-cursor {
+	border-left: 1px solid #757575;
+}
+/*.cm-s-panda-syntax div.CodeMirror-selected { background: rgba(255, 255, 255, 0.5); }*/
+.cm-s-panda-syntax.CodeMirror-focused div.CodeMirror-selected { background: rgba(255, 255, 255, 0.25); }
+.cm-s-panda-syntax .CodeMirror-line::selection, .cm-s-panda-syntax .CodeMirror-line > span::selection, .cm-s-panda-syntax .CodeMirror-line > span > span::selection { background: rgba(255, 255, 255, 0.10); }
+.cm-s-panda-syntax .CodeMirror-line::-moz-selection, .cm-s-panda-syntax .CodeMirror-line > span::-moz-selection, .cm-s-panda-syntax .CodeMirror-line > span > span::-moz-selection { background: rgba(255, 255, 255, 0.10); }
+
+.cm-s-panda-syntax .CodeMirror-activeline-background { background: rgba(99, 123, 156, 0.125); }
diff --git a/vendor/assets/stylesheets/codemirror/themes/solarized.css b/vendor/assets/stylesheets/codemirror/themes/solarized.css
index 4b1e163..1f39c7e 100644
--- a/vendor/assets/stylesheets/codemirror/themes/solarized.css
+++ b/vendor/assets/stylesheets/codemirror/themes/solarized.css
@@ -155,8 +155,8 @@ http://ethanschoonover.com/solarized/img/solarized-palette.png
 .cm-s-solarized .CodeMirror-cursor { border-left: 1px solid #819090; }
 
 /* Fat cursor */
-.cm-s-solarized.cm-s-light.cm-fat-cursor .CodeMirror-cursor { background: #fdf6e3; }
-.cm-s-solarized.cm-s-light .cm-animate-fat-cursor { background-color: #fdf6e3; }
+.cm-s-solarized.cm-s-light.cm-fat-cursor .CodeMirror-cursor { background: #77ee77; }
+.cm-s-solarized.cm-s-light .cm-animate-fat-cursor { background-color: #77ee77; }
 .cm-s-solarized.cm-s-dark.cm-fat-cursor .CodeMirror-cursor { background: #586e75; }
 .cm-s-solarized.cm-s-dark .cm-animate-fat-cursor { background-color: #586e75; }