diff --git a/edit/codemirror-themes.js b/edit/codemirror-themes.js
index 433a185c..d9e25d19 100644
--- a/edit/codemirror-themes.js
+++ b/edit/codemirror-themes.js
@@ -8,6 +8,8 @@ const CODEMIRROR_THEMES = [
   'abcdef',
   'ambiance',
   'ambiance-mobile',
+  'ayu-dark',
+  'ayu-mirage',
   'base16-dark',
   'base16-light',
   'bespin',
@@ -30,10 +32,14 @@ const CODEMIRROR_THEMES = [
   'liquibyte',
   'lucario',
   'material',
+  'material-darker',
+  'material-ocean',
+  'material-palenight',
   'mbo',
   'mdn-like',
   'midnight',
   'monokai',
+  'moxer',
   'neat',
   'neo',
   'night',
diff --git a/vendor/codemirror/README.md b/vendor/codemirror/README.md
index 4aeeeef6..8144ea4e 100644
--- a/vendor/codemirror/README.md
+++ b/vendor/codemirror/README.md
@@ -1,3 +1,3 @@
-## CodeMirror v5.48.4
+## CodeMirror v5.51.0
 
 Only files & folders that exist in the `vendor/codemirror` folder are copied from the `node_modules/codemirror` folder. Except all theme files are copied, in case new themes have been added.
diff --git a/vendor/codemirror/addon/fold/foldcode.js b/vendor/codemirror/addon/fold/foldcode.js
index e146fb9f..887df3fe 100644
--- a/vendor/codemirror/addon/fold/foldcode.js
+++ b/vendor/codemirror/addon/fold/foldcode.js
@@ -42,7 +42,7 @@
     }
     if (!range || range.cleared || force === "unfold") return;
 
-    var myWidget = makeWidget(cm, options);
+    var myWidget = makeWidget(cm, options, range);
     CodeMirror.on(myWidget, "mousedown", function(e) {
       myRange.clear();
       CodeMirror.e_preventDefault(e);
@@ -58,8 +58,13 @@
     CodeMirror.signal(cm, "fold", cm, range.from, range.to);
   }
 
-  function makeWidget(cm, options) {
+  function makeWidget(cm, options, range) {
     var widget = getOption(cm, options, "widget");
+
+    if (typeof widget == "function") {
+      widget = widget(range.from, range.to);
+    }
+
     if (typeof widget == "string") {
       var text = document.createTextNode(widget);
       widget = document.createElement("span");
diff --git a/vendor/codemirror/addon/fold/foldgutter.js b/vendor/codemirror/addon/fold/foldgutter.js
index fcb5021e..7d46a609 100644
--- a/vendor/codemirror/addon/fold/foldgutter.js
+++ b/vendor/codemirror/addon/fold/foldgutter.js
@@ -16,7 +16,7 @@
       cm.clearGutter(cm.state.foldGutter.options.gutter);
       cm.state.foldGutter = null;
       cm.off("gutterClick", onGutterClick);
-      cm.off("change", onChange);
+      cm.off("changes", onChange);
       cm.off("viewportChange", onViewportChange);
       cm.off("fold", onFold);
       cm.off("unfold", onFold);
@@ -26,7 +26,7 @@
       cm.state.foldGutter = new State(parseOptions(val));
       updateInViewport(cm);
       cm.on("gutterClick", onGutterClick);
-      cm.on("change", onChange);
+      cm.on("changes", onChange);
       cm.on("viewportChange", onViewportChange);
       cm.on("fold", onFold);
       cm.on("unfold", onFold);
@@ -71,24 +71,36 @@
   }
 
   function updateFoldInfo(cm, from, to) {
-    var opts = cm.state.foldGutter.options, cur = from;
+    var opts = cm.state.foldGutter.options, cur = from - 1;
     var minSize = cm.foldOption(opts, "minFoldSize");
     var func = cm.foldOption(opts, "rangeFinder");
+    // we can reuse the built-in indicator element if its className matches the new state
+    var clsFolded = typeof opts.indicatorFolded == "string" && classTest(opts.indicatorFolded);
+    var clsOpen = typeof opts.indicatorOpen == "string" && classTest(opts.indicatorOpen);
     cm.eachLine(from, to, function(line) {
+      ++cur;
       var mark = null;
+      var old = line.gutterMarkers;
+      if (old) old = old[opts.gutter];
       if (isFolded(cm, cur)) {
+        if (clsFolded && old && clsFolded.test(old.className)) return;
         mark = marker(opts.indicatorFolded);
       } else {
         var pos = Pos(cur, 0);
         var range = func && func(cm, pos);
-        if (range && range.to.line - range.from.line >= minSize)
+        if (range && range.to.line - range.from.line >= minSize) {
+          if (clsOpen && old && clsOpen.test(old.className)) return;
           mark = marker(opts.indicatorOpen);
+        }
       }
+      if (!mark && !old) return;
       cm.setGutterMarker(line, opts.gutter, mark);
-      ++cur;
     });
   }
 
+  // copied from CodeMirror/src/util/dom.js
+  function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }
+
   function updateInViewport(cm) {
     var vp = cm.getViewport(), state = cm.state.foldGutter;
     if (!state) return;
diff --git a/vendor/codemirror/addon/hint/css-hint.js b/vendor/codemirror/addon/hint/css-hint.js
index 6cdf7281..980d1197 100644
--- a/vendor/codemirror/addon/hint/css-hint.js
+++ b/vendor/codemirror/addon/hint/css-hint.js
@@ -11,9 +11,15 @@
 })(function(CodeMirror) {
   "use strict";
 
-  var pseudoClasses = {link: 1, visited: 1, active: 1, hover: 1, focus: 1,
-                       "first-letter": 1, "first-line": 1, "first-child": 1,
-                       before: 1, after: 1, lang: 1};
+  var pseudoClasses = {"active":1, "after":1, "before":1, "checked":1, "default":1,
+    "disabled":1, "empty":1, "enabled":1, "first-child":1, "first-letter":1,
+    "first-line":1, "first-of-type":1, "focus":1, "hover":1, "in-range":1,
+    "indeterminate":1, "invalid":1, "lang":1, "last-child":1, "last-of-type":1,
+    "link":1, "not":1, "nth-child":1, "nth-last-child":1, "nth-last-of-type":1,
+    "nth-of-type":1, "only-of-type":1, "only-child":1, "optional":1, "out-of-range":1,
+    "placeholder":1, "read-only":1, "read-write":1, "required":1, "root":1,
+    "selection":1, "target":1, "valid":1, "visited":1
+  };
 
   CodeMirror.registerHelper("hint", "css", function(cm) {
     var cur = cm.getCursor(), token = cm.getTokenAt(cur);
diff --git a/vendor/codemirror/addon/hint/show-hint.js b/vendor/codemirror/addon/hint/show-hint.js
index d70b2ab1..374cddfe 100644
--- a/vendor/codemirror/addon/hint/show-hint.js
+++ b/vendor/codemirror/addon/hint/show-hint.js
@@ -322,6 +322,7 @@
     CodeMirror.on(hints, "mousedown", function() {
       setTimeout(function(){cm.focus();}, 20);
     });
+    this.scrollToActive()
 
     CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]);
     return true;
@@ -363,11 +364,16 @@
       if (node) node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
       node = this.hints.childNodes[this.selectedHint = i];
       node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
+      this.scrollToActive()
+      CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
+    },
+
+    scrollToActive: function() {
+      var node = this.hints.childNodes[this.selectedHint]
       if (node.offsetTop < this.hints.scrollTop)
         this.hints.scrollTop = node.offsetTop - 3;
       else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
         this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
-      CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
     },
 
     screenAmount: function() {
diff --git a/vendor/codemirror/addon/scroll/annotatescrollbar.js b/vendor/codemirror/addon/scroll/annotatescrollbar.js
index 35662581..9fe61ec1 100644
--- a/vendor/codemirror/addon/scroll/annotatescrollbar.js
+++ b/vendor/codemirror/addon/scroll/annotatescrollbar.js
@@ -43,7 +43,7 @@
     cm.on("markerAdded", this.resizeHandler);
     cm.on("markerCleared", this.resizeHandler);
     if (options.listenForChanges !== false)
-      cm.on("change", this.changeHandler = function() {
+      cm.on("changes", this.changeHandler = function() {
         scheduleRedraw(250);
       });
   }
@@ -116,7 +116,7 @@
     this.cm.off("refresh", this.resizeHandler);
     this.cm.off("markerAdded", this.resizeHandler);
     this.cm.off("markerCleared", this.resizeHandler);
-    if (this.changeHandler) this.cm.off("change", this.changeHandler);
+    if (this.changeHandler) this.cm.off("changes", this.changeHandler);
     this.div.parentNode.removeChild(this.div);
   };
 });
diff --git a/vendor/codemirror/addon/search/searchcursor.js b/vendor/codemirror/addon/search/searchcursor.js
index aae36dfe..816bf774 100644
--- a/vendor/codemirror/addon/search/searchcursor.js
+++ b/vendor/codemirror/addon/search/searchcursor.js
@@ -72,24 +72,26 @@
     }
   }
 
-  function lastMatchIn(string, regexp) {
-    var cutOff = 0, match
-    for (;;) {
-      regexp.lastIndex = cutOff
+  function lastMatchIn(string, regexp, endMargin) {
+    var match, from = 0
+    while (from <= string.length) {
+      regexp.lastIndex = from
       var newMatch = regexp.exec(string)
-      if (!newMatch) return match
-      match = newMatch
-      cutOff = match.index + (match[0].length || 1)
-      if (cutOff == string.length) return match
+      if (!newMatch) break
+      var end = newMatch.index + newMatch[0].length
+      if (end > string.length - endMargin) break
+      if (!match || end > match.index + match[0].length)
+        match = newMatch
+      from = newMatch.index + 1
     }
+    return match
   }
 
   function searchRegexpBackward(doc, regexp, start) {
     regexp = ensureFlags(regexp, "g")
     for (var line = start.line, ch = start.ch, first = doc.firstLine(); line >= first; line--, ch = -1) {
       var string = doc.getLine(line)
-      if (ch > -1) string = string.slice(0, ch)
-      var match = lastMatchIn(string, regexp)
+      var match = lastMatchIn(string, regexp, ch < 0 ? 0 : string.length - ch)
       if (match)
         return {from: Pos(line, match.index),
                 to: Pos(line, match.index + match[0].length),
@@ -98,16 +100,17 @@
   }
 
   function searchRegexpBackwardMultiline(doc, regexp, start) {
+    if (!maybeMultiline(regexp)) return searchRegexpBackward(doc, regexp, start)
     regexp = ensureFlags(regexp, "gm")
-    var string, chunk = 1
+    var string, chunkSize = 1, endMargin = doc.getLine(start.line).length - start.ch
     for (var line = start.line, first = doc.firstLine(); line >= first;) {
-      for (var i = 0; i < chunk; i++) {
+      for (var i = 0; i < chunkSize && line >= first; i++) {
         var curLine = doc.getLine(line--)
-        string = string == null ? curLine.slice(0, start.ch) : curLine + "\n" + string
+        string = string == null ? curLine : curLine + "\n" + string
       }
-      chunk *= 2
+      chunkSize *= 2
 
-      var match = lastMatchIn(string, regexp)
+      var match = lastMatchIn(string, regexp, endMargin)
       if (match) {
         var before = string.slice(0, match.index).split("\n"), inside = match[0].split("\n")
         var startLine = line + before.length, startCh = before[before.length - 1].length
diff --git a/vendor/codemirror/keymap/sublime.js b/vendor/codemirror/keymap/sublime.js
index 799641af..cfdf71ed 100644
--- a/vendor/codemirror/keymap/sublime.js
+++ b/vendor/codemirror/keymap/sublime.js
@@ -22,17 +22,21 @@
     if (dir < 0 && start.ch == 0) return doc.clipPos(Pos(start.line - 1));
     var line = doc.getLine(start.line);
     if (dir > 0 && start.ch >= line.length) return doc.clipPos(Pos(start.line + 1, 0));
-    var state = "start", type;
-    for (var pos = start.ch, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {
+    var state = "start", type, startPos = start.ch;
+    for (var pos = startPos, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {
       var next = line.charAt(dir < 0 ? pos - 1 : pos);
       var cat = next != "_" && CodeMirror.isWordChar(next) ? "w" : "o";
       if (cat == "w" && next.toUpperCase() == next) cat = "W";
       if (state == "start") {
         if (cat != "o") { state = "in"; type = cat; }
+        else startPos = pos + dir
       } else if (state == "in") {
         if (type != cat) {
           if (type == "w" && cat == "W" && dir < 0) pos--;
-          if (type == "W" && cat == "w" && dir > 0) { type = "w"; continue; }
+          if (type == "W" && cat == "w" && dir > 0) { // From uppercase to lowercase
+            if (pos == startPos + 1) { type = "w"; continue; }
+            else pos--;
+          }
           break;
         }
       }
@@ -144,14 +148,24 @@
         cur = cm.getSearchCursor(query, Pos(cm.firstLine(), 0));
         found = cur.findNext();
       }
-      if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to()))
-        return CodeMirror.Pass
+      if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to())) return
       cm.addSelection(cur.from(), cur.to());
     }
     if (fullWord)
       cm.state.sublimeFindFullWord = cm.doc.sel;
   };
 
+  cmds.skipAndSelectNextOccurrence = function(cm) {
+    var prevAnchor = cm.getCursor("anchor"), prevHead = cm.getCursor("head");
+    cmds.selectNextOccurrence(cm);
+    if (CodeMirror.cmpPos(prevAnchor, prevHead) != 0) {
+      cm.doc.setSelections(cm.doc.listSelections()
+          .filter(function (sel) {
+            return sel.anchor != prevAnchor || sel.head != prevHead;
+          }));
+    }
+  }
+
   function addCursorToSelection(cm, dir) {
     var ranges = cm.listSelections(), newRanges = [];
     for (var i = 0; i < ranges.length; i++) {
@@ -175,7 +189,8 @@
 
   function isSelectedRange(ranges, from, to) {
     for (var i = 0; i < ranges.length; i++)
-      if (ranges[i].from() == from && ranges[i].to() == to) return true
+      if (CodeMirror.cmpPos(ranges[i].from(), from) == 0 &&
+          CodeMirror.cmpPos(ranges[i].to(), to) == 0) return true
     return false
   }
 
@@ -213,11 +228,15 @@
     if (!selectBetweenBrackets(cm)) return CodeMirror.Pass;
   };
 
+  function puncType(type) {
+    return !type ? null : /\bpunctuation\b/.test(type) ? type : undefined
+  }
+
   cmds.goToBracket = function(cm) {
     cm.extendSelectionsBy(function(range) {
-      var next = cm.scanForBracket(range.head, 1);
+      var next = cm.scanForBracket(range.head, 1, puncType(cm.getTokenTypeAt(range.head)));
       if (next && CodeMirror.cmpPos(next.pos, range.head) != 0) return next.pos;
-      var prev = cm.scanForBracket(range.head, -1);
+      var prev = cm.scanForBracket(range.head, -1, puncType(cm.getTokenTypeAt(Pos(range.head.line, range.head.ch + 1))));
       return prev && Pos(prev.pos.line, prev.pos.ch + 1) || range.head;
     });
   };
@@ -597,6 +616,7 @@
     "Shift-Cmd-F2": "clearBookmarks",
     "Alt-F2": "selectBookmarks",
     "Backspace": "smartBackspace",
+    "Cmd-K Cmd-D": "skipAndSelectNextOccurrence",
     "Cmd-K Cmd-K": "delLineRight",
     "Cmd-K Cmd-U": "upcaseAtCursor",
     "Cmd-K Cmd-L": "downcaseAtCursor",
@@ -657,6 +677,7 @@
     "Shift-Ctrl-F2": "clearBookmarks",
     "Alt-F2": "selectBookmarks",
     "Backspace": "smartBackspace",
+    "Ctrl-K Ctrl-D": "skipAndSelectNextOccurrence",
     "Ctrl-K Ctrl-K": "delLineRight",
     "Ctrl-K Ctrl-U": "upcaseAtCursor",
     "Ctrl-K Ctrl-L": "downcaseAtCursor",
diff --git a/vendor/codemirror/keymap/vim.js b/vendor/codemirror/keymap/vim.js
index 95b19b24..ce5983d8 100644
--- a/vendor/codemirror/keymap/vim.js
+++ b/vendor/codemirror/keymap/vim.js
@@ -164,7 +164,9 @@
     { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'eol' }, context: 'normal' },
     { keys: 'A', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'endOfSelectedArea' }, context: 'visual' },
     { keys: 'i', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'inplace' }, context: 'normal' },
+    { keys: 'gi', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'lastEdit' }, context: 'normal' },
     { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'firstNonBlank'}, context: 'normal' },
+    { keys: 'gI', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'bol'}, context: 'normal' },
     { keys: 'I', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { insertAt: 'startOfSelectedArea' }, context: 'visual' },
     { keys: 'o', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: true }, context: 'normal' },
     { keys: 'O', type: 'action', action: 'newLineAndEnterInsertMode', isEdit: true, interlaceInsertRepeat: true, actionArgs: { after: false }, context: 'normal' },
@@ -174,13 +176,15 @@
     { keys: '<C-q>', type: 'action', action: 'toggleVisualMode', actionArgs: { blockwise: true }},
     { keys: 'gv', type: 'action', action: 'reselectLastSelection' },
     { keys: 'J', type: 'action', action: 'joinLines', isEdit: true },
+    { keys: 'gJ', type: 'action', action: 'joinLines', actionArgs: { keepSpaces: true }, isEdit: true },
     { keys: 'p', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: true, isEdit: true }},
     { keys: 'P', type: 'action', action: 'paste', isEdit: true, actionArgs: { after: false, isEdit: true }},
     { keys: 'r<character>', type: 'action', action: 'replace', isEdit: true },
     { keys: '@<character>', type: 'action', action: 'replayMacro' },
     { keys: 'q<character>', type: 'action', action: 'enterMacroRecordMode' },
     // Handle Replace-mode as a special case of insert mode.
-    { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }},
+    { keys: 'R', type: 'action', action: 'enterInsertMode', isEdit: true, actionArgs: { replace: true }, context: 'normal'},
+    { keys: 'R', type: 'operator', operator: 'change', operatorArgs: { linewise: true, fullLine: true }, context: 'visual', exitVisualBlock: true},
     { keys: 'u', type: 'action', action: 'undo', context: 'normal' },
     { keys: 'u', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: true}, context: 'visual', isEdit: true },
     { keys: 'U', type: 'operator', operator: 'changeCase', operatorArgs: {toLower: false}, context: 'visual', isEdit: true },
@@ -594,9 +598,16 @@
         }
         return mark;
       }
+      function find(cm, offset) {
+        var oldPointer = pointer;
+        var mark = move(cm, offset);
+        pointer = oldPointer;
+        return mark && mark.find();
+      }
       return {
         cachedCursor: undefined, //used for # and * jumps
         add: add,
+        find: find,
         move: move
       };
     };
@@ -1293,6 +1304,10 @@
         }
         inputState.operator = command.operator;
         inputState.operatorArgs = copyArgs(command.operatorArgs);
+        if (command.exitVisualBlock) {
+            vim.visualBlock = false;
+            updateCmSelection(cm);
+        }
         if (vim.visualMode) {
           // Operating on a selection in visual mode. We don't need a motion.
           this.evalInput(cm, vim);
@@ -1843,6 +1858,12 @@
         var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
         var first = cm.firstLine();
         var last = cm.lastLine();
+        var posV = cm.findPosV(cur, (motionArgs.forward ? repeat : -repeat), 'line', vim.lastHSPos);
+        var hasMarkedText = motionArgs.forward ? posV.line > line : posV.line < line;
+        if (hasMarkedText) {
+          line = posV.line;
+          endCh = posV.ch;
+        }
         // Vim go to line begin or line end when cursor at first/last line and
         // move to previous/next line is triggered.
         if (line < first && cur.line == first){
@@ -2098,9 +2119,9 @@
       change: function(cm, args, ranges) {
         var finalHead, text;
         var vim = cm.state.vim;
+        var anchor = ranges[0].anchor,
+            head = ranges[0].head;
         if (!vim.visualMode) {
-          var anchor = ranges[0].anchor,
-              head = ranges[0].head;
           text = cm.getRange(anchor, head);
           var lastState = vim.lastEditInputState || {};
           if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
@@ -2128,6 +2149,13 @@
             anchor.ch = Number.MAX_VALUE;
           }
           finalHead = anchor;
+        } else if (args.fullLine) {
+            head.ch = Number.MAX_VALUE;
+            head.line--;
+            cm.setSelection(anchor, head)
+            text = cm.getSelection();
+            cm.replaceSelection("");
+            finalHead = anchor;
         } else {
           text = cm.getSelection();
           var replacement = fillArray('', ranges.length);
@@ -2355,6 +2383,8 @@
         var height = cm.listSelections().length;
         if (insertAt == 'eol') {
           head = Pos(head.line, lineLength(cm, head.line));
+        } else if (insertAt == 'bol') {
+          head = Pos(head.line, 0);
         } else if (insertAt == 'charAfter') {
           head = offsetCursor(head, 0, 1);
         } else if (insertAt == 'firstNonBlank') {
@@ -2393,6 +2423,8 @@
           if (vim.visualMode){
             return;
           }
+        } else if (insertAt == 'lastEdit') {
+          head = getLastEditPos(cm) || head;
         }
         cm.setOption('disableInput', false);
         if (actionArgs && actionArgs.replace) {
@@ -2501,7 +2533,9 @@
           var tmp = Pos(curStart.line + 1,
                         lineLength(cm, curStart.line + 1));
           var text = cm.getRange(curStart, tmp);
-          text = text.replace(/\n\s*/g, ' ');
+          text = actionArgs.keepSpaces
+            ? text.replace(/\n\r?/g, '')
+            : text.replace(/\n\s*/g, ' ');
           cm.replaceRange(text, curStart, tmp);
         }
         var curFinalPos = Pos(curStart.line, finalCh);
@@ -4318,25 +4352,25 @@
     }
 
     function getMarkPos(cm, vim, markName) {
-      if (markName == '\'') {
-        var history = cm.doc.history.done;
-        var event = history[history.length - 2];
-        return event && event.ranges && event.ranges[0].head;
+      if (markName == '\'' || markName == '`') {
+        return vimGlobalState.jumpList.find(cm, -1) || Pos(0, 0);
       } else if (markName == '.') {
-        if (cm.doc.history.lastModTime == 0) {
-          return  // If no changes, bail out; don't bother to copy or reverse history array.
-        } else {
-          var changeHistory = cm.doc.history.done.filter(function(el){ if (el.changes !== undefined) { return el } });
-          changeHistory.reverse();
-          var lastEditPos = changeHistory[0].changes[0].to;
-        }
-        return lastEditPos;
+        return getLastEditPos(cm);
       }
 
       var mark = vim.marks[markName];
       return mark && mark.find();
     }
 
+    function getLastEditPos(cm) {
+      var done = cm.doc.history.done;
+      for (var i = done.length; i--;) {
+        if (done[i].changes) {
+          return copyCursor(done[i].changes[0].to);
+        }
+      }
+    }
+
     var ExCommandDispatcher = function() {
       this.buildCommandMap_();
     };
diff --git a/vendor/codemirror/lib/codemirror.js b/vendor/codemirror/lib/codemirror.js
index 076a0b89..3a1f0a99 100644
--- a/vendor/codemirror/lib/codemirror.js
+++ b/vendor/codemirror/lib/codemirror.js
@@ -10,7 +10,7 @@
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
   typeof define === 'function' && define.amd ? define(factory) :
-  (global.CodeMirror = factory());
+  (global = global || self, global.CodeMirror = factory());
 }(this, (function () { 'use strict';
 
   // Kludges for bugs and behavior differences that can't be feature
@@ -173,10 +173,28 @@
     }
   }
 
-  var Delayed = function() {this.id = null;};
+  var Delayed = function() {
+    this.id = null;
+    this.f = null;
+    this.time = 0;
+    this.handler = bind(this.onTimeout, this);
+  };
+  Delayed.prototype.onTimeout = function (self) {
+    self.id = 0;
+    if (self.time <= +new Date) {
+      self.f();
+    } else {
+      setTimeout(self.handler, self.time - +new Date);
+    }
+  };
   Delayed.prototype.set = function (ms, f) {
-    clearTimeout(this.id);
-    this.id = setTimeout(f, ms);
+    this.f = f;
+    var time = +new Date + ms;
+    if (!this.id || time < this.time) {
+      clearTimeout(this.id);
+      this.id = setTimeout(this.handler, ms);
+      this.time = time;
+    }
   };
 
   function indexOf(array, elt) {
@@ -518,8 +536,8 @@
     } else if (emitter.attachEvent) {
       emitter.attachEvent("on" + type, f);
     } else {
-      var map$$1 = emitter._handlers || (emitter._handlers = {});
-      map$$1[type] = (map$$1[type] || noHandlers).concat(f);
+      var map = emitter._handlers || (emitter._handlers = {});
+      map[type] = (map[type] || noHandlers).concat(f);
     }
   };
 
@@ -533,11 +551,11 @@
     } else if (emitter.detachEvent) {
       emitter.detachEvent("on" + type, f);
     } else {
-      var map$$1 = emitter._handlers, arr = map$$1 && map$$1[type];
+      var map = emitter._handlers, arr = map && map[type];
       if (arr) {
         var index = indexOf(arr, f);
         if (index > -1)
-          { map$$1[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }
+          { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }
       }
     }
   }
@@ -665,11 +683,11 @@
     try { return te.selectionStart != te.selectionEnd }
     catch(e) { return false }
   } : function (te) {
-    var range$$1;
-    try {range$$1 = te.ownerDocument.selection.createRange();}
+    var range;
+    try {range = te.ownerDocument.selection.createRange();}
     catch(e) {}
-    if (!range$$1 || range$$1.parentElement() != te) { return false }
-    return range$$1.compareEndPoints("StartToEnd", range$$1) != 0
+    if (!range || range.parentElement() != te) { return false }
+    return range.compareEndPoints("StartToEnd", range) != 0
   };
 
   var hasCopyEvent = (function () {
@@ -817,10 +835,8 @@
     return this.pos > start
   };
   StringStream.prototype.eatSpace = function () {
-      var this$1 = this;
-
     var start = this.pos;
-    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos; }
+    while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this.pos; }
     return this.pos > start
   };
   StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;};
@@ -1016,11 +1032,9 @@
   };
 
   Context.prototype.baseToken = function (n) {
-      var this$1 = this;
-
     if (!this.baseTokens) { return null }
     while (this.baseTokens[this.baseTokenPos] <= n)
-      { this$1.baseTokenPos += 2; }
+      { this.baseTokenPos += 2; }
     var type = this.baseTokens[this.baseTokenPos + 1];
     return {type: type && type.replace(/( |^)overlay .*/, ""),
             size: this.baseTokens[this.baseTokenPos] - n}
@@ -1509,8 +1523,8 @@
   // Test whether there exists a collapsed span that partially
   // overlaps (covers the start or end, but not both) of a new span.
   // Such overlap is not allowed.
-  function conflictingCollapsedRange(doc, lineNo$$1, from, to, marker) {
-    var line = getLine(doc, lineNo$$1);
+  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
+    var line = getLine(doc, lineNo);
     var sps = sawCollapsedSpans && line.markedSpans;
     if (sps) { for (var i = 0; i < sps.length; ++i) {
       var sp = sps[i];
@@ -2191,10 +2205,10 @@
 
   function updateLineWidgets(cm, lineView, dims) {
     if (lineView.alignable) { lineView.alignable = null; }
+    var isWidget = classTest("CodeMirror-linewidget");
     for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
       next = node.nextSibling;
-      if (node.className == "CodeMirror-linewidget")
-        { lineView.node.removeChild(node); }
+      if (isWidget.test(node.className)) { lineView.node.removeChild(node); }
     }
     insertLineWidgets(cm, lineView, dims);
   }
@@ -2224,7 +2238,7 @@
     if (!line.widgets) { return }
     var wrap = ensureLineWrapped(lineView);
     for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
-      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
+      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget" + (widget.className ? " " + widget.className : ""));
       if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true"); }
       positionLineWidget(widget, node, lineView, dims);
       cm.display.input.setUneditable(node);
@@ -2412,36 +2426,36 @@
 
   var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
 
-  function nodeAndOffsetInLineMap(map$$1, ch, bias) {
+  function nodeAndOffsetInLineMap(map, ch, bias) {
     var node, start, end, collapse, mStart, mEnd;
     // First, search the line map for the text node corresponding to,
     // or closest to, the target character.
-    for (var i = 0; i < map$$1.length; i += 3) {
-      mStart = map$$1[i];
-      mEnd = map$$1[i + 1];
+    for (var i = 0; i < map.length; i += 3) {
+      mStart = map[i];
+      mEnd = map[i + 1];
       if (ch < mStart) {
         start = 0; end = 1;
         collapse = "left";
       } else if (ch < mEnd) {
         start = ch - mStart;
         end = start + 1;
-      } else if (i == map$$1.length - 3 || ch == mEnd && map$$1[i + 3] > ch) {
+      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
         end = mEnd - mStart;
         start = end - 1;
         if (ch >= mEnd) { collapse = "right"; }
       }
       if (start != null) {
-        node = map$$1[i + 2];
+        node = map[i + 2];
         if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
           { collapse = bias; }
         if (bias == "left" && start == 0)
-          { while (i && map$$1[i - 2] == map$$1[i - 3] && map$$1[i - 1].insertLeft) {
-            node = map$$1[(i -= 3) + 2];
+          { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
+            node = map[(i -= 3) + 2];
             collapse = "left";
           } }
         if (bias == "right" && start == mEnd - mStart)
-          { while (i < map$$1.length - 3 && map$$1[i + 3] == map$$1[i + 4] && !map$$1[i + 5].insertLeft) {
-            node = map$$1[(i += 3) + 2];
+          { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
+            node = map[(i += 3) + 2];
             collapse = "right";
           } }
         break
@@ -2724,13 +2738,13 @@
     return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x
   }
 
-  function coordsCharInner(cm, lineObj, lineNo$$1, x, y) {
+  function coordsCharInner(cm, lineObj, lineNo, x, y) {
     // Move y into line-local coordinate space
     y -= heightAtLine(lineObj);
     var preparedMeasure = prepareMeasureForLine(cm, lineObj);
     // When directly calling `measureCharPrepared`, we have to adjust
     // for the widgets at this line.
-    var widgetHeight$$1 = widgetTopHeight(lineObj);
+    var widgetHeight = widgetTopHeight(lineObj);
     var begin = 0, end = lineObj.text.length, ltr = true;
 
     var order = getOrder(lineObj, cm.doc.direction);
@@ -2738,7 +2752,7 @@
     // which bidi section the coordinates fall into.
     if (order) {
       var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)
-                   (cm, lineObj, lineNo$$1, preparedMeasure, order, x, y);
+                   (cm, lineObj, lineNo, preparedMeasure, order, x, y);
       ltr = part.level != 1;
       // The awkward -1 offsets are needed because findFirst (called
       // on these below) will treat its first bound as inclusive,
@@ -2754,7 +2768,7 @@
     var chAround = null, boxAround = null;
     var ch = findFirst(function (ch) {
       var box = measureCharPrepared(cm, preparedMeasure, ch);
-      box.top += widgetHeight$$1; box.bottom += widgetHeight$$1;
+      box.top += widgetHeight; box.bottom += widgetHeight;
       if (!boxIsAfter(box, x, y, false)) { return false }
       if (box.top <= y && box.left <= x) {
         chAround = ch;
@@ -2778,27 +2792,27 @@
       // left of the character and compare it's vertical position to the
       // coordinates
       sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" :
-        (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight$$1 <= y) == ltr ?
+        (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ?
         "after" : "before";
       // Now get accurate coordinates for this place, in order to get a
       // base X position
-      var coords = cursorCoords(cm, Pos(lineNo$$1, ch, sticky), "line", lineObj, preparedMeasure);
+      var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), "line", lineObj, preparedMeasure);
       baseX = coords.left;
       outside = y < coords.top ? -1 : y >= coords.bottom ? 1 : 0;
     }
 
     ch = skipExtendingChars(lineObj.text, ch, 1);
-    return PosWithInfo(lineNo$$1, ch, sticky, outside, x - baseX)
+    return PosWithInfo(lineNo, ch, sticky, outside, x - baseX)
   }
 
-  function coordsBidiPart(cm, lineObj, lineNo$$1, preparedMeasure, order, x, y) {
+  function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) {
     // Bidi parts are sorted left-to-right, and in a non-line-wrapping
     // situation, we can take this ordering to correspond to the visual
     // ordering. This finds the first part whose end is after the given
     // coordinates.
     var index = findFirst(function (i) {
       var part = order[i], ltr = part.level != 1;
-      return boxIsAfter(cursorCoords(cm, Pos(lineNo$$1, ltr ? part.to : part.from, ltr ? "before" : "after"),
+      return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? "before" : "after"),
                                      "line", lineObj, preparedMeasure), x, y, true)
     }, 0, order.length - 1);
     var part = order[index];
@@ -2807,7 +2821,7 @@
     // that start, move one part back.
     if (index > 0) {
       var ltr = part.level != 1;
-      var start = cursorCoords(cm, Pos(lineNo$$1, ltr ? part.from : part.to, ltr ? "after" : "before"),
+      var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? "after" : "before"),
                                "line", lineObj, preparedMeasure);
       if (boxIsAfter(start, x, y, true) && start.top > y)
         { part = order[index - 1]; }
@@ -2947,7 +2961,7 @@
     try { x = e.clientX - space.left; y = e.clientY - space.top; }
     catch (e) { return null }
     var coords = coordsChar(cm, x, y), line;
-    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
+    if (forRect && coords.xRel > 0 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
       var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
       coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
     }
@@ -3128,13 +3142,13 @@
 
     for (var i = 0; i < doc.sel.ranges.length; i++) {
       if (!primary && i == doc.sel.primIndex) { continue }
-      var range$$1 = doc.sel.ranges[i];
-      if (range$$1.from().line >= cm.display.viewTo || range$$1.to().line < cm.display.viewFrom) { continue }
-      var collapsed = range$$1.empty();
+      var range = doc.sel.ranges[i];
+      if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }
+      var collapsed = range.empty();
       if (collapsed || cm.options.showCursorWhenSelecting)
-        { drawSelectionCursor(cm, range$$1.head, curFragment); }
+        { drawSelectionCursor(cm, range.head, curFragment); }
       if (!collapsed)
-        { drawSelectionRange(cm, range$$1, selFragment); }
+        { drawSelectionRange(cm, range, selFragment); }
     }
     return result
   }
@@ -3161,7 +3175,7 @@
   function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }
 
   // Draws the given range as a highlighted selection
-  function drawSelectionRange(cm, range$$1, output) {
+  function drawSelectionRange(cm, range, output) {
     var display = cm.display, doc = cm.doc;
     var fragment = document.createDocumentFragment();
     var padding = paddingH(cm.display), leftSide = padding.left;
@@ -3230,7 +3244,7 @@
       return {start: start, end: end}
     }
 
-    var sFrom = range$$1.from(), sTo = range$$1.to();
+    var sFrom = range.from(), sTo = range.to();
     if (sFrom.line == sTo.line) {
       drawForLine(sFrom.line, sFrom.ch, sTo.ch);
     } else {
@@ -3497,9 +3511,9 @@
     if (y != null) { cm.curOp.scrollTop = y; }
   }
 
-  function scrollToRange(cm, range$$1) {
+  function scrollToRange(cm, range) {
     resolveScrollToPos(cm);
-    cm.curOp.scrollToPos = range$$1;
+    cm.curOp.scrollToPos = range;
   }
 
   // When an operation has its scrollToPos property set, and another
@@ -3507,11 +3521,11 @@
   // 'simulates' scrolling that position into view in a cheap way, so
   // that the effect of intermediate scroll commands is not ignored.
   function resolveScrollToPos(cm) {
-    var range$$1 = cm.curOp.scrollToPos;
-    if (range$$1) {
+    var range = cm.curOp.scrollToPos;
+    if (range) {
       cm.curOp.scrollToPos = null;
-      var from = estimateCoords(cm, range$$1.from), to = estimateCoords(cm, range$$1.to);
-      scrollToCoordsRange(cm, from, to, range$$1.margin);
+      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
+      scrollToCoordsRange(cm, from, to, range.margin);
     }
   }
 
@@ -3658,9 +3672,9 @@
       // (when the bar is hidden). If it is still visible, we keep
       // it enabled, if it's hidden, we disable pointer events.
       var box = bar.getBoundingClientRect();
-      var elt$$1 = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)
+      var elt = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)
           : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);
-      if (elt$$1 != bar) { bar.style.pointerEvents = "none"; }
+      if (elt != bar) { bar.style.pointerEvents = "none"; }
       else { delay.set(1000, maybeDisable); }
     }
     delay.set(1000, maybeDisable);
@@ -4000,10 +4014,8 @@
       { this.events.push(arguments); }
   };
   DisplayUpdate.prototype.finish = function () {
-      var this$1 = this;
-
     for (var i = 0; i < this.events.length; i++)
-      { signal.apply(null, this$1.events[i]); }
+      { signal.apply(null, this.events[i]); }
   };
 
   function maybeClipScrollbars(cm) {
@@ -4038,11 +4050,11 @@
     if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return }
     snapshot.activeElt.focus();
     if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {
-      var sel = window.getSelection(), range$$1 = document.createRange();
-      range$$1.setEnd(snapshot.anchorNode, snapshot.anchorOffset);
-      range$$1.collapse(false);
+      var sel = window.getSelection(), range = document.createRange();
+      range.setEnd(snapshot.anchorNode, snapshot.anchorOffset);
+      range.collapse(false);
       sel.removeAllRanges();
-      sel.addRange(range$$1);
+      sel.addRange(range);
       sel.extend(snapshot.focusNode, snapshot.focusOffset);
     }
   }
@@ -4535,40 +4547,32 @@
   Selection.prototype.primary = function () { return this.ranges[this.primIndex] };
 
   Selection.prototype.equals = function (other) {
-      var this$1 = this;
-
     if (other == this) { return true }
     if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }
     for (var i = 0; i < this.ranges.length; i++) {
-      var here = this$1.ranges[i], there = other.ranges[i];
+      var here = this.ranges[i], there = other.ranges[i];
       if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }
     }
     return true
   };
 
   Selection.prototype.deepCopy = function () {
-      var this$1 = this;
-
     var out = [];
     for (var i = 0; i < this.ranges.length; i++)
-      { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)); }
+      { out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); }
     return new Selection(out, this.primIndex)
   };
 
   Selection.prototype.somethingSelected = function () {
-      var this$1 = this;
-
     for (var i = 0; i < this.ranges.length; i++)
-      { if (!this$1.ranges[i].empty()) { return true } }
+      { if (!this.ranges[i].empty()) { return true } }
     return false
   };
 
   Selection.prototype.contains = function (pos, end) {
-      var this$1 = this;
-
     if (!end) { end = pos; }
     for (var i = 0; i < this.ranges.length; i++) {
-      var range = this$1.ranges[i];
+      var range = this.ranges[i];
       if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
         { return i }
     }
@@ -4694,16 +4698,16 @@
   }
 
   // Perform a change on the document data structure.
-  function updateDoc(doc, change, markedSpans, estimateHeight$$1) {
+  function updateDoc(doc, change, markedSpans, estimateHeight) {
     function spansFor(n) {return markedSpans ? markedSpans[n] : null}
     function update(line, text, spans) {
-      updateLine(line, text, spans, estimateHeight$$1);
+      updateLine(line, text, spans, estimateHeight);
       signalLater(line, "change", line, change);
     }
     function linesFor(start, end) {
       var result = [];
       for (var i = start; i < end; ++i)
-        { result.push(new Line(text[i], spansFor(i), estimateHeight$$1)); }
+        { result.push(new Line(text[i], spansFor(i), estimateHeight)); }
       return result
     }
 
@@ -4727,7 +4731,7 @@
         update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
       } else {
         var added$1 = linesFor(1, text.length - 1);
-        added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight$$1));
+        added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
         update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
         doc.insert(from.line + 1, added$1);
       }
@@ -5064,11 +5068,9 @@
     var obj = {
       ranges: sel.ranges,
       update: function(ranges) {
-        var this$1 = this;
-
         this.ranges = [];
         for (var i = 0; i < ranges.length; i++)
-          { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
+          { this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
                                      clipPos(doc, ranges[i].head)); }
       },
       origin: options && options.origin
@@ -5555,13 +5557,11 @@
   // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
 
   function LeafChunk(lines) {
-    var this$1 = this;
-
     this.lines = lines;
     this.parent = null;
     var height = 0;
     for (var i = 0; i < lines.length; ++i) {
-      lines[i].parent = this$1;
+      lines[i].parent = this;
       height += lines[i].height;
     }
     this.height = height;
@@ -5572,11 +5572,9 @@
 
     // Remove the n lines at offset 'at'.
     removeInner: function(at, n) {
-      var this$1 = this;
-
       for (var i = at, e = at + n; i < e; ++i) {
-        var line = this$1.lines[i];
-        this$1.height -= line.height;
+        var line = this.lines[i];
+        this.height -= line.height;
         cleanUpLine(line);
         signalLater(line, "delete");
       }
@@ -5591,31 +5589,25 @@
     // Insert the given array of lines at offset 'at', count them as
     // having the given height.
     insertInner: function(at, lines, height) {
-      var this$1 = this;
-
       this.height += height;
       this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
-      for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1; }
+      for (var i = 0; i < lines.length; ++i) { lines[i].parent = this; }
     },
 
     // Used to iterate over a part of the tree.
     iterN: function(at, n, op) {
-      var this$1 = this;
-
       for (var e = at + n; at < e; ++at)
-        { if (op(this$1.lines[at])) { return true } }
+        { if (op(this.lines[at])) { return true } }
     }
   };
 
   function BranchChunk(children) {
-    var this$1 = this;
-
     this.children = children;
     var size = 0, height = 0;
     for (var i = 0; i < children.length; ++i) {
       var ch = children[i];
       size += ch.chunkSize(); height += ch.height;
-      ch.parent = this$1;
+      ch.parent = this;
     }
     this.size = size;
     this.height = height;
@@ -5626,16 +5618,14 @@
     chunkSize: function() { return this.size },
 
     removeInner: function(at, n) {
-      var this$1 = this;
-
       this.size -= n;
       for (var i = 0; i < this.children.length; ++i) {
-        var child = this$1.children[i], sz = child.chunkSize();
+        var child = this.children[i], sz = child.chunkSize();
         if (at < sz) {
           var rm = Math.min(n, sz - at), oldHeight = child.height;
           child.removeInner(at, rm);
-          this$1.height -= oldHeight - child.height;
-          if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null; }
+          this.height -= oldHeight - child.height;
+          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
           if ((n -= rm) == 0) { break }
           at = 0;
         } else { at -= sz; }
@@ -5652,18 +5642,14 @@
     },
 
     collapse: function(lines) {
-      var this$1 = this;
-
-      for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines); }
+      for (var i = 0; i < this.children.length; ++i) { this.children[i].collapse(lines); }
     },
 
     insertInner: function(at, lines, height) {
-      var this$1 = this;
-
       this.size += lines.length;
       this.height += height;
       for (var i = 0; i < this.children.length; ++i) {
-        var child = this$1.children[i], sz = child.chunkSize();
+        var child = this.children[i], sz = child.chunkSize();
         if (at <= sz) {
           child.insertInner(at, lines, height);
           if (child.lines && child.lines.length > 50) {
@@ -5673,11 +5659,11 @@
             for (var pos = remaining; pos < child.lines.length;) {
               var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));
               child.height -= leaf.height;
-              this$1.children.splice(++i, 0, leaf);
-              leaf.parent = this$1;
+              this.children.splice(++i, 0, leaf);
+              leaf.parent = this;
             }
             child.lines = child.lines.slice(0, remaining);
-            this$1.maybeSpill();
+            this.maybeSpill();
           }
           break
         }
@@ -5709,10 +5695,8 @@
     },
 
     iterN: function(at, n, op) {
-      var this$1 = this;
-
       for (var i = 0; i < this.children.length; ++i) {
-        var child = this$1.children[i], sz = child.chunkSize();
+        var child = this.children[i], sz = child.chunkSize();
         if (at < sz) {
           var used = Math.min(n, sz - at);
           if (child.iterN(at, used, op)) { return true }
@@ -5726,20 +5710,16 @@
   // Line widgets are block elements displayed above or below a line.
 
   var LineWidget = function(doc, node, options) {
-    var this$1 = this;
-
     if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))
-      { this$1[opt] = options[opt]; } } }
+      { this[opt] = options[opt]; } } }
     this.doc = doc;
     this.node = node;
   };
 
   LineWidget.prototype.clear = function () {
-      var this$1 = this;
-
     var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
     if (no == null || !ws) { return }
-    for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1); } }
+    for (var i = 0; i < ws.length; ++i) { if (ws[i] == this) { ws.splice(i--, 1); } }
     if (!ws.length) { line.widgets = null; }
     var height = widgetHeight(this);
     updateLineHeight(line, Math.max(0, line.height - height));
@@ -5822,8 +5802,6 @@
 
   // Clear the marker.
   TextMarker.prototype.clear = function () {
-      var this$1 = this;
-
     if (this.explicitlyCleared) { return }
     var cm = this.doc.cm, withOp = cm && !cm.curOp;
     if (withOp) { startOperation(cm); }
@@ -5833,19 +5811,19 @@
     }
     var min = null, max = null;
     for (var i = 0; i < this.lines.length; ++i) {
-      var line = this$1.lines[i];
-      var span = getMarkedSpanFor(line.markedSpans, this$1);
-      if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text"); }
+      var line = this.lines[i];
+      var span = getMarkedSpanFor(line.markedSpans, this);
+      if (cm && !this.collapsed) { regLineChange(cm, lineNo(line), "text"); }
       else if (cm) {
         if (span.to != null) { max = lineNo(line); }
         if (span.from != null) { min = lineNo(line); }
       }
       line.markedSpans = removeMarkedSpan(line.markedSpans, span);
-      if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm)
+      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
         { updateLineHeight(line, textHeight(cm.display)); }
     }
     if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
-      var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual);
+      var visual = visualLine(this.lines[i$1]), len = lineLength(visual);
       if (len > cm.display.maxLineLength) {
         cm.display.maxLine = visual;
         cm.display.maxLineLength = len;
@@ -5871,13 +5849,11 @@
   // Pos objects returned contain a line object, rather than a line
   // number (used to prevent looking up the same line twice).
   TextMarker.prototype.find = function (side, lineObj) {
-      var this$1 = this;
-
     if (side == null && this.type == "bookmark") { side = 1; }
     var from, to;
     for (var i = 0; i < this.lines.length; ++i) {
-      var line = this$1.lines[i];
-      var span = getMarkedSpanFor(line.markedSpans, this$1);
+      var line = this.lines[i];
+      var span = getMarkedSpanFor(line.markedSpans, this);
       if (span.from != null) {
         from = Pos(lineObj ? line : lineNo(line), span.from);
         if (side == -1) { return from }
@@ -6011,21 +5987,17 @@
   // implemented as a meta-marker-object controlling multiple normal
   // markers.
   var SharedTextMarker = function(markers, primary) {
-    var this$1 = this;
-
     this.markers = markers;
     this.primary = primary;
     for (var i = 0; i < markers.length; ++i)
-      { markers[i].parent = this$1; }
+      { markers[i].parent = this; }
   };
 
   SharedTextMarker.prototype.clear = function () {
-      var this$1 = this;
-
     if (this.explicitlyCleared) { return }
     this.explicitlyCleared = true;
     for (var i = 0; i < this.markers.length; ++i)
-      { this$1.markers[i].clear(); }
+      { this.markers[i].clear(); }
     signalLater(this, "clear");
   };
 
@@ -6168,11 +6140,11 @@
     clipPos: function(pos) {return clipPos(this, pos)},
 
     getCursor: function(start) {
-      var range$$1 = this.sel.primary(), pos;
-      if (start == null || start == "head") { pos = range$$1.head; }
-      else if (start == "anchor") { pos = range$$1.anchor; }
-      else if (start == "end" || start == "to" || start === false) { pos = range$$1.to(); }
-      else { pos = range$$1.from(); }
+      var range = this.sel.primary(), pos;
+      if (start == null || start == "head") { pos = range.head; }
+      else if (start == "anchor") { pos = range.anchor; }
+      else if (start == "end" || start == "to" || start === false) { pos = range.to(); }
+      else { pos = range.from(); }
       return pos
     },
     listSelections: function() { return this.sel.ranges },
@@ -6195,13 +6167,11 @@
       extendSelections(this, clipPosArray(this, heads), options);
     }),
     setSelections: docMethodOp(function(ranges, primary, options) {
-      var this$1 = this;
-
       if (!ranges.length) { return }
       var out = [];
       for (var i = 0; i < ranges.length; i++)
-        { out[i] = new Range(clipPos(this$1, ranges[i].anchor),
-                           clipPos(this$1, ranges[i].head)); }
+        { out[i] = new Range(clipPos(this, ranges[i].anchor),
+                           clipPos(this, ranges[i].head)); }
       if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); }
       setSelection(this, normalizeSelection(this.cm, out, primary), options);
     }),
@@ -6212,23 +6182,19 @@
     }),
 
     getSelection: function(lineSep) {
-      var this$1 = this;
-
       var ranges = this.sel.ranges, lines;
       for (var i = 0; i < ranges.length; i++) {
-        var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
+        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
         lines = lines ? lines.concat(sel) : sel;
       }
       if (lineSep === false) { return lines }
       else { return lines.join(lineSep || this.lineSeparator()) }
     },
     getSelections: function(lineSep) {
-      var this$1 = this;
-
       var parts = [], ranges = this.sel.ranges;
       for (var i = 0; i < ranges.length; i++) {
-        var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
-        if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()); }
+        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
+        if (lineSep !== false) { sel = sel.join(lineSep || this.lineSeparator()); }
         parts[i] = sel;
       }
       return parts
@@ -6240,16 +6206,14 @@
       this.replaceSelections(dup, collapse, origin || "+input");
     },
     replaceSelections: docMethodOp(function(code, collapse, origin) {
-      var this$1 = this;
-
       var changes = [], sel = this.sel;
       for (var i = 0; i < sel.ranges.length; i++) {
-        var range$$1 = sel.ranges[i];
-        changes[i] = {from: range$$1.from(), to: range$$1.to(), text: this$1.splitLines(code[i]), origin: origin};
+        var range = sel.ranges[i];
+        changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};
       }
       var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
       for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)
-        { makeChange(this$1, changes[i$1]); }
+        { makeChange(this, changes[i$1]); }
       if (newSel) { setSelectionReplaceHistory(this, newSel); }
       else if (this.cm) { ensureCursorVisible(this.cm); }
     }),
@@ -6267,7 +6231,12 @@
       for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } }
       return {undo: done, redo: undone}
     },
-    clearHistory: function() {this.history = new History(this.history.maxGeneration);},
+    clearHistory: function() {
+      var this$1 = this;
+
+      this.history = new History(this.history.maxGeneration);
+      linkedDocs(this, function (doc) { return doc.history = this$1.history; }, true);
+    },
 
     markClean: function() {
       this.cleanGeneration = this.changeGeneration(true);
@@ -6388,18 +6357,18 @@
     },
     findMarks: function(from, to, filter) {
       from = clipPos(this, from); to = clipPos(this, to);
-      var found = [], lineNo$$1 = from.line;
+      var found = [], lineNo = from.line;
       this.iter(from.line, to.line + 1, function (line) {
         var spans = line.markedSpans;
         if (spans) { for (var i = 0; i < spans.length; i++) {
           var span = spans[i];
-          if (!(span.to != null && lineNo$$1 == from.line && from.ch >= span.to ||
-                span.from == null && lineNo$$1 != from.line ||
-                span.from != null && lineNo$$1 == to.line && span.from >= to.ch) &&
+          if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||
+                span.from == null && lineNo != from.line ||
+                span.from != null && lineNo == to.line && span.from >= to.ch) &&
               (!filter || filter(span.marker)))
             { found.push(span.marker.parent || span.marker); }
         } }
-        ++lineNo$$1;
+        ++lineNo;
       });
       return found
     },
@@ -6414,14 +6383,14 @@
     },
 
     posFromIndex: function(off) {
-      var ch, lineNo$$1 = this.first, sepSize = this.lineSeparator().length;
+      var ch, lineNo = this.first, sepSize = this.lineSeparator().length;
       this.iter(function (line) {
         var sz = line.text.length + sepSize;
         if (sz > off) { ch = off; return true }
         off -= sz;
-        ++lineNo$$1;
+        ++lineNo;
       });
-      return clipPos(this, Pos(lineNo$$1, ch))
+      return clipPos(this, Pos(lineNo, ch))
     },
     indexFromPos: function (coords) {
       coords = clipPos(this, coords);
@@ -6460,15 +6429,13 @@
       return copy
     },
     unlinkDoc: function(other) {
-      var this$1 = this;
-
       if (other instanceof CodeMirror) { other = other.doc; }
       if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {
-        var link = this$1.linked[i];
+        var link = this.linked[i];
         if (link.doc != other) { continue }
-        this$1.linked.splice(i, 1);
-        other.unlinkDoc(this$1);
-        detachSharedMarkers(findSharedMarkers(this$1));
+        this.linked.splice(i, 1);
+        other.unlinkDoc(this);
+        detachSharedMarkers(findSharedMarkers(this));
         break
       } }
       // If the histories were shared, split them again
@@ -6520,28 +6487,39 @@
     // and insert it.
     if (files && files.length && window.FileReader && window.File) {
       var n = files.length, text = Array(n), read = 0;
-      var loadFile = function (file, i) {
-        if (cm.options.allowDropFileTypes &&
-            indexOf(cm.options.allowDropFileTypes, file.type) == -1)
-          { return }
-
-        var reader = new FileReader;
-        reader.onload = operation(cm, function () {
-          var content = reader.result;
-          if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = ""; }
-          text[i] = content;
-          if (++read == n) {
+      var markAsReadAndPasteIfAllFilesAreRead = function () {
+        if (++read == n) {
+          operation(cm, function () {
             pos = clipPos(cm.doc, pos);
             var change = {from: pos, to: pos,
-                          text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
+                          text: cm.doc.splitLines(
+                              text.filter(function (t) { return t != null; }).join(cm.doc.lineSeparator())),
                           origin: "paste"};
             makeChange(cm.doc, change);
             setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
+          })();
+        }
+      };
+      var readTextFromFile = function (file, i) {
+        if (cm.options.allowDropFileTypes &&
+            indexOf(cm.options.allowDropFileTypes, file.type) == -1) {
+          markAsReadAndPasteIfAllFilesAreRead();
+          return
+        }
+        var reader = new FileReader;
+        reader.onerror = function () { return markAsReadAndPasteIfAllFilesAreRead(); };
+        reader.onload = function () {
+          var content = reader.result;
+          if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) {
+            markAsReadAndPasteIfAllFilesAreRead();
+            return
           }
-        });
+          text[i] = content;
+          markAsReadAndPasteIfAllFilesAreRead();
+        };
         reader.readAsText(file);
       };
-      for (var i = 0; i < n; ++i) { loadFile(files[i], i); }
+      for (var i = 0; i < files.length; i++) { readTextFromFile(files[i], i); }
     } else { // Normal drop
       // Don't do a replace if the drop happened inside of the selected text.
       if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
@@ -6766,18 +6744,18 @@
     return keymap
   }
 
-  function lookupKey(key, map$$1, handle, context) {
-    map$$1 = getKeyMap(map$$1);
-    var found = map$$1.call ? map$$1.call(key, context) : map$$1[key];
+  function lookupKey(key, map, handle, context) {
+    map = getKeyMap(map);
+    var found = map.call ? map.call(key, context) : map[key];
     if (found === false) { return "nothing" }
     if (found === "...") { return "multi" }
     if (found != null && handle(found)) { return "handled" }
 
-    if (map$$1.fallthrough) {
-      if (Object.prototype.toString.call(map$$1.fallthrough) != "[object Array]")
-        { return lookupKey(key, map$$1.fallthrough, handle, context) }
-      for (var i = 0; i < map$$1.fallthrough.length; i++) {
-        var result = lookupKey(key, map$$1.fallthrough[i], handle, context);
+    if (map.fallthrough) {
+      if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
+        { return lookupKey(key, map.fallthrough, handle, context) }
+      for (var i = 0; i < map.fallthrough.length; i++) {
+        var result = lookupKey(key, map.fallthrough[i], handle, context);
         if (result) { return result }
       }
     }
@@ -6851,6 +6829,7 @@
 
   function endOfLine(visually, cm, lineObj, lineNo, dir) {
     if (visually) {
+      if (cm.getOption("direction") == "rtl") { dir = -dir; }
       var order = getOrder(lineObj, cm.doc.direction);
       if (order) {
         var part = dir < 0 ? lst(order) : order[0];
@@ -7221,6 +7200,8 @@
       if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
         { cm.replaceSelection("", null, "cut"); }
     }
+    if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand)
+      { document.execCommand("cut"); }
 
     // Turn mouse into crosshair when Alt is held on Mac.
     if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
@@ -7452,11 +7433,11 @@
       start = posFromMouse(cm, event, true, true);
       ourIndex = -1;
     } else {
-      var range$$1 = rangeForUnit(cm, start, behavior.unit);
+      var range = rangeForUnit(cm, start, behavior.unit);
       if (behavior.extend)
-        { ourRange = extendRange(ourRange, range$$1.anchor, range$$1.head, behavior.extend); }
+        { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend); }
       else
-        { ourRange = range$$1; }
+        { ourRange = range; }
     }
 
     if (!behavior.addNew) {
@@ -7499,14 +7480,14 @@
         cm.scrollIntoView(pos);
       } else {
         var oldRange = ourRange;
-        var range$$1 = rangeForUnit(cm, pos, behavior.unit);
+        var range = rangeForUnit(cm, pos, behavior.unit);
         var anchor = oldRange.anchor, head;
-        if (cmp(range$$1.anchor, anchor) > 0) {
-          head = range$$1.head;
-          anchor = minPos(oldRange.from(), range$$1.anchor);
+        if (cmp(range.anchor, anchor) > 0) {
+          head = range.head;
+          anchor = minPos(oldRange.from(), range.anchor);
         } else {
-          head = range$$1.anchor;
-          anchor = maxPos(oldRange.to(), range$$1.head);
+          head = range.anchor;
+          anchor = maxPos(oldRange.to(), range.head);
         }
         var ranges$1 = startSel.ranges.slice(0);
         ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));
@@ -7568,17 +7549,17 @@
 
   // Used when mouse-selecting to adjust the anchor to the proper side
   // of a bidi jump depending on the visual position of the head.
-  function bidiSimplify(cm, range$$1) {
-    var anchor = range$$1.anchor;
-    var head = range$$1.head;
+  function bidiSimplify(cm, range) {
+    var anchor = range.anchor;
+    var head = range.head;
     var anchorLine = getLine(cm.doc, anchor.line);
-    if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range$$1 }
+    if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range }
     var order = getOrder(anchorLine);
-    if (!order) { return range$$1 }
+    if (!order) { return range }
     var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index];
-    if (part.from != anchor.ch && part.to != anchor.ch) { return range$$1 }
+    if (part.from != anchor.ch && part.to != anchor.ch) { return range }
     var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);
-    if (boundary == 0 || boundary == order.length) { return range$$1 }
+    if (boundary == 0 || boundary == order.length) { return range }
 
     // Compute the relative visual position of the head compared to the
     // anchor (<0 is to the left, >0 to the right)
@@ -7597,7 +7578,7 @@
     var usePart = order[boundary + (leftSide ? -1 : 0)];
     var from = leftSide == (usePart.level == 1);
     var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before";
-    return anchor.ch == ch && anchor.sticky == sticky ? range$$1 : new Range(new Pos(anchor.line, ch, sticky), head)
+    return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head)
   }
 
 
@@ -7889,10 +7870,10 @@
       { onBlur(this); }
 
     for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))
-      { optionHandlers[opt](this$1, options[opt], Init); } }
+      { optionHandlers[opt](this, options[opt], Init); } }
     maybeUpdateLineNumberWidth(this);
     if (options.finishInit) { options.finishInit(this); }
-    for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1); }
+    for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this); }
     endOperation(this);
     // Suppress optimizelegibility in Webkit, since it breaks text
     // measuring on line wrapping boundaries.
@@ -7926,6 +7907,9 @@
     // which point we can't mess with it anymore. Context menu is
     // handled in onMouseDown for these browsers.
     on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); });
+    on(d.input.getField(), "contextmenu", function (e) {
+      if (!d.scroller.contains(e.target)) { onContextMenu(cm, e); }
+    });
 
     // Used to suppress mouse event handling when a touch happens
     var touchFinished, prevTouch = {end: 0};
@@ -8114,9 +8098,9 @@
     var updateInput = cm.curOp.updateInput;
     // Normal behavior is to insert the new text into every selection
     for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
-      var range$$1 = sel.ranges[i$1];
-      var from = range$$1.from(), to = range$$1.to();
-      if (range$$1.empty()) {
+      var range = sel.ranges[i$1];
+      var from = range.from(), to = range.to();
+      if (range.empty()) {
         if (deleted && deleted > 0) // Handle deletion
           { from = Pos(from.line, from.ch - deleted); }
         else if (cm.state.overwrite && !paste) // Handle overwrite
@@ -8154,21 +8138,21 @@
     var sel = cm.doc.sel;
 
     for (var i = sel.ranges.length - 1; i >= 0; i--) {
-      var range$$1 = sel.ranges[i];
-      if (range$$1.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range$$1.head.line)) { continue }
-      var mode = cm.getModeAt(range$$1.head);
+      var range = sel.ranges[i];
+      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }
+      var mode = cm.getModeAt(range.head);
       var indented = false;
       if (mode.electricChars) {
         for (var j = 0; j < mode.electricChars.length; j++)
           { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
-            indented = indentLine(cm, range$$1.head.line, "smart");
+            indented = indentLine(cm, range.head.line, "smart");
             break
           } }
       } else if (mode.electricInput) {
-        if (mode.electricInput.test(getLine(cm.doc, range$$1.head.line).text.slice(0, range$$1.head.ch)))
-          { indented = indentLine(cm, range$$1.head.line, "smart"); }
+        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
+          { indented = indentLine(cm, range.head.line, "smart"); }
       }
-      if (indented) { signalLater(cm, "electricInput", cm, range$$1.head.line); }
+      if (indented) { signalLater(cm, "electricInput", cm, range.head.line); }
     }
   }
 
@@ -8233,13 +8217,13 @@
       getOption: function(option) {return this.options[option]},
       getDoc: function() {return this.doc},
 
-      addKeyMap: function(map$$1, bottom) {
-        this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map$$1));
+      addKeyMap: function(map, bottom) {
+        this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
       },
-      removeKeyMap: function(map$$1) {
+      removeKeyMap: function(map) {
         var maps = this.state.keyMaps;
         for (var i = 0; i < maps.length; ++i)
-          { if (maps[i] == map$$1 || maps[i].name == map$$1) {
+          { if (maps[i] == map || maps[i].name == map) {
             maps.splice(i, 1);
             return true
           } }
@@ -8256,15 +8240,13 @@
         regChange(this);
       }),
       removeOverlay: methodOp(function(spec) {
-        var this$1 = this;
-
         var overlays = this.state.overlays;
         for (var i = 0; i < overlays.length; ++i) {
           var cur = overlays[i].modeSpec;
           if (cur == spec || typeof spec == "string" && cur.name == spec) {
             overlays.splice(i, 1);
-            this$1.state.modeGen++;
-            regChange(this$1);
+            this.state.modeGen++;
+            regChange(this);
             return
           }
         }
@@ -8278,24 +8260,22 @@
         if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); }
       }),
       indentSelection: methodOp(function(how) {
-        var this$1 = this;
-
         var ranges = this.doc.sel.ranges, end = -1;
         for (var i = 0; i < ranges.length; i++) {
-          var range$$1 = ranges[i];
-          if (!range$$1.empty()) {
-            var from = range$$1.from(), to = range$$1.to();
+          var range = ranges[i];
+          if (!range.empty()) {
+            var from = range.from(), to = range.to();
             var start = Math.max(end, from.line);
-            end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
+            end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
             for (var j = start; j < end; ++j)
-              { indentLine(this$1, j, how); }
-            var newRanges = this$1.doc.sel.ranges;
+              { indentLine(this, j, how); }
+            var newRanges = this.doc.sel.ranges;
             if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
-              { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }
-          } else if (range$$1.head.line > end) {
-            indentLine(this$1, range$$1.head.line, how, true);
-            end = range$$1.head.line;
-            if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1); }
+              { replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }
+          } else if (range.head.line > end) {
+            indentLine(this, range.head.line, how, true);
+            end = range.head.line;
+            if (i == this.doc.sel.primIndex) { ensureCursorVisible(this); }
           }
         }
       }),
@@ -8337,8 +8317,6 @@
       },
 
       getHelpers: function(pos, type) {
-        var this$1 = this;
-
         var found = [];
         if (!helpers.hasOwnProperty(type)) { return found }
         var help = helpers[type], mode = this.getModeAt(pos);
@@ -8356,7 +8334,7 @@
         }
         for (var i$1 = 0; i$1 < help._global.length; i$1++) {
           var cur = help._global[i$1];
-          if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1)
+          if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
             { found.push(cur.val); }
         }
         return found
@@ -8369,10 +8347,10 @@
       },
 
       cursorCoords: function(start, mode) {
-        var pos, range$$1 = this.doc.sel.primary();
-        if (start == null) { pos = range$$1.head; }
+        var pos, range = this.doc.sel.primary();
+        if (start == null) { pos = range.head; }
         else if (typeof start == "object") { pos = clipPos(this.doc, start); }
-        else { pos = start ? range$$1.from() : range$$1.to(); }
+        else { pos = start ? range.from() : range.to(); }
         return cursorCoords(this, pos, mode || "page")
       },
 
@@ -8456,13 +8434,11 @@
       triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),
 
       findPosH: function(from, amount, unit, visually) {
-        var this$1 = this;
-
         var dir = 1;
         if (amount < 0) { dir = -1; amount = -amount; }
         var cur = clipPos(this.doc, from);
         for (var i = 0; i < amount; ++i) {
-          cur = findPosH(this$1.doc, cur, dir, unit, visually);
+          cur = findPosH(this.doc, cur, dir, unit, visually);
           if (cur.hitSide) { break }
         }
         return cur
@@ -8471,11 +8447,11 @@
       moveH: methodOp(function(dir, unit) {
         var this$1 = this;
 
-        this.extendSelectionsBy(function (range$$1) {
-          if (this$1.display.shift || this$1.doc.extend || range$$1.empty())
-            { return findPosH(this$1.doc, range$$1.head, dir, unit, this$1.options.rtlMoveVisually) }
+        this.extendSelectionsBy(function (range) {
+          if (this$1.display.shift || this$1.doc.extend || range.empty())
+            { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) }
           else
-            { return dir < 0 ? range$$1.from() : range$$1.to() }
+            { return dir < 0 ? range.from() : range.to() }
         }, sel_move);
       }),
 
@@ -8484,23 +8460,21 @@
         if (sel.somethingSelected())
           { doc.replaceSelection("", null, "+delete"); }
         else
-          { deleteNearSelection(this, function (range$$1) {
-            var other = findPosH(doc, range$$1.head, dir, unit, false);
-            return dir < 0 ? {from: other, to: range$$1.head} : {from: range$$1.head, to: other}
+          { deleteNearSelection(this, function (range) {
+            var other = findPosH(doc, range.head, dir, unit, false);
+            return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}
           }); }
       }),
 
       findPosV: function(from, amount, unit, goalColumn) {
-        var this$1 = this;
-
         var dir = 1, x = goalColumn;
         if (amount < 0) { dir = -1; amount = -amount; }
         var cur = clipPos(this.doc, from);
         for (var i = 0; i < amount; ++i) {
-          var coords = cursorCoords(this$1, cur, "div");
+          var coords = cursorCoords(this, cur, "div");
           if (x == null) { x = coords.left; }
           else { coords.left = x; }
-          cur = findPosV(this$1, coords, dir, unit);
+          cur = findPosV(this, coords, dir, unit);
           if (cur.hitSide) { break }
         }
         return cur
@@ -8511,14 +8485,14 @@
 
         var doc = this.doc, goals = [];
         var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();
-        doc.extendSelectionsBy(function (range$$1) {
+        doc.extendSelectionsBy(function (range) {
           if (collapse)
-            { return dir < 0 ? range$$1.from() : range$$1.to() }
-          var headPos = cursorCoords(this$1, range$$1.head, "div");
-          if (range$$1.goalColumn != null) { headPos.left = range$$1.goalColumn; }
+            { return dir < 0 ? range.from() : range.to() }
+          var headPos = cursorCoords(this$1, range.head, "div");
+          if (range.goalColumn != null) { headPos.left = range.goalColumn; }
           goals.push(headPos.left);
           var pos = findPosV(this$1, headPos, dir, unit);
-          if (unit == "page" && range$$1 == doc.sel.primary())
+          if (unit == "page" && range == doc.sel.primary())
             { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top); }
           return pos
         }, sel_move);
@@ -8565,22 +8539,22 @@
                 clientHeight: displayHeight(this), clientWidth: displayWidth(this)}
       },
 
-      scrollIntoView: methodOp(function(range$$1, margin) {
-        if (range$$1 == null) {
-          range$$1 = {from: this.doc.sel.primary().head, to: null};
+      scrollIntoView: methodOp(function(range, margin) {
+        if (range == null) {
+          range = {from: this.doc.sel.primary().head, to: null};
           if (margin == null) { margin = this.options.cursorScrollMargin; }
-        } else if (typeof range$$1 == "number") {
-          range$$1 = {from: Pos(range$$1, 0), to: null};
-        } else if (range$$1.from == null) {
-          range$$1 = {from: range$$1, to: null};
+        } else if (typeof range == "number") {
+          range = {from: Pos(range, 0), to: null};
+        } else if (range.from == null) {
+          range = {from: range, to: null};
         }
-        if (!range$$1.to) { range$$1.to = range$$1.from; }
-        range$$1.margin = margin || 0;
+        if (!range.to) { range.to = range.from; }
+        range.margin = margin || 0;
 
-        if (range$$1.from.line != null) {
-          scrollToRange(this, range$$1);
+        if (range.from.line != null) {
+          scrollToRange(this, range);
         } else {
-          scrollToCoordsRange(this, range$$1.from, range$$1.to, range$$1.margin);
+          scrollToCoordsRange(this, range.from, range.to, range.margin);
         }
       }),
 
@@ -8591,11 +8565,11 @@
         if (width != null) { this.display.wrapper.style.width = interpret(width); }
         if (height != null) { this.display.wrapper.style.height = interpret(height); }
         if (this.options.lineWrapping) { clearLineMeasurementCache(this); }
-        var lineNo$$1 = this.display.viewFrom;
-        this.doc.iter(lineNo$$1, this.display.viewTo, function (line) {
+        var lineNo = this.display.viewFrom;
+        this.doc.iter(lineNo, this.display.viewTo, function (line) {
           if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)
-            { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo$$1, "widget"); break } } }
-          ++lineNo$$1;
+            { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, "widget"); break } } }
+          ++lineNo;
         });
         this.curOp.forceUpdate = true;
         signal(this, "refresh", this);
@@ -8666,8 +8640,9 @@
     var oldPos = pos;
     var origDir = dir;
     var lineObj = getLine(doc, pos.line);
+    var lineDir = visually && doc.cm && doc.cm.getOption("direction") == "rtl" ? -dir : dir;
     function findNextLine() {
-      var l = pos.line + dir;
+      var l = pos.line + lineDir;
       if (l < doc.first || l >= doc.first + doc.size) { return false }
       pos = new Pos(l, pos.ch, pos.sticky);
       return lineObj = getLine(doc, l)
@@ -8681,7 +8656,7 @@
       }
       if (next == null) {
         if (!boundToLine && findNextLine())
-          { pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir); }
+          { pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir); }
         else
           { return false }
       } else {
@@ -8866,8 +8841,8 @@
     var end = to.line < cm.display.viewTo && posToDOM(cm, to);
     if (!end) {
       var measure = view[view.length - 1].measure;
-      var map$$1 = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
-      end = {node: map$$1[map$$1.length - 1], offset: map$$1[map$$1.length - 2] - map$$1[map$$1.length - 3]};
+      var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
+      end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
     }
 
     if (!start || !end) {
@@ -9156,11 +9131,11 @@
           addText(cmText);
           return
         }
-        var markerID = node.getAttribute("cm-marker"), range$$1;
+        var markerID = node.getAttribute("cm-marker"), range;
         if (markerID) {
           var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
-          if (found.length && (range$$1 = found[0].find(0)))
-            { addText(getBetween(cm.doc, range$$1.from, range$$1.to).join(lineSep)); }
+          if (found.length && (range = found[0].find(0)))
+            { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)); }
           return
         }
         if (node.getAttribute("contenteditable") == "false") { return }
@@ -9228,13 +9203,13 @@
 
     function find(textNode, topNode, offset) {
       for (var i = -1; i < (maps ? maps.length : 0); i++) {
-        var map$$1 = i < 0 ? measure.map : maps[i];
-        for (var j = 0; j < map$$1.length; j += 3) {
-          var curNode = map$$1[j + 2];
+        var map = i < 0 ? measure.map : maps[i];
+        for (var j = 0; j < map.length; j += 3) {
+          var curNode = map[j + 2];
           if (curNode == textNode || curNode == topNode) {
             var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
-            var ch = map$$1[j] + offset;
-            if (offset < 0 || curNode != textNode) { ch = map$$1[j + (offset ? 1 : 0)]; }
+            var ch = map[j] + offset;
+            if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)]; }
             return Pos(line, ch)
           }
         }
@@ -9659,7 +9634,7 @@
         textarea.style.display = "";
         if (textarea.form) {
           off(textarea.form, "submit", save);
-          if (typeof textarea.form.submit == "function")
+          if (!options.leaveSubmitMethodAlone && typeof textarea.form.submit == "function")
             { textarea.form.submit = realSubmit; }
         }
       };
@@ -9758,7 +9733,7 @@
 
   addLegacyProps(CodeMirror);
 
-  CodeMirror.version = "5.48.4";
+  CodeMirror.version = "5.51.0";
 
   return CodeMirror;
 
diff --git a/vendor/codemirror/mode/javascript/javascript.js b/vendor/codemirror/mode/javascript/javascript.js
index 8055f1ba..16943a9e 100644
--- a/vendor/codemirror/mode/javascript/javascript.js
+++ b/vendor/codemirror/mode/javascript/javascript.js
@@ -101,6 +101,9 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     } else if (ch == "#") {
       stream.skipToEnd();
       return ret("error", "error");
+    } else if (ch == "<" && stream.match("!--") || ch == "-" && stream.match("->")) {
+      stream.skipToEnd()
+      return ret("comment", "comment")
     } else if (isOperatorChar.test(ch)) {
       if (ch != ">" || !state.lexical || state.lexical.type != ">") {
         if (stream.eat("=")) {
diff --git a/vendor/codemirror/theme/ayu-dark.css b/vendor/codemirror/theme/ayu-dark.css
new file mode 100644
index 00000000..fd41ba3e
--- /dev/null
+++ b/vendor/codemirror/theme/ayu-dark.css
@@ -0,0 +1,42 @@
+/* Based on https://github.com/dempfi/ayu */
+
+.cm-s-ayu-dark.CodeMirror { background: #0a0e14; color: #b3b1ad; }
+.cm-s-ayu-dark div.CodeMirror-selected { background: #273747; }
+.cm-s-ayu-dark .CodeMirror-line::selection, .cm-s-ayu-dark .CodeMirror-line > span::selection, .cm-s-ayu-dark .CodeMirror-line > span > span::selection { background: rgba(39, 55, 71, 99); }
+.cm-s-ayu-dark .CodeMirror-line::-moz-selection, .cm-s-ayu-dark .CodeMirror-line > span::-moz-selection, .cm-s-ayu-dark .CodeMirror-line > span > span::-moz-selection { background: rgba(39, 55, 71, 99); }
+.cm-s-ayu-dark .CodeMirror-gutters { background: #0a0e14; border-right: 0px; }
+.cm-s-ayu-dark .CodeMirror-guttermarker { color: white; }
+.cm-s-ayu-dark .CodeMirror-guttermarker-subtle { color: #3d424d; }
+.cm-s-ayu-dark .CodeMirror-linenumber { color: #3d424d; }
+.cm-s-ayu-dark .CodeMirror-cursor { border-left: 1px solid #e6b450; }
+
+.cm-s-ayu-dark span.cm-comment { color: #626a73; }
+.cm-s-ayu-dark span.cm-atom { color: #ae81ff; }
+.cm-s-ayu-dark span.cm-number { color: #e6b450; }
+
+.cm-s-ayu-dark span.cm-comment.cm-attribute { color: #ffb454; }
+.cm-s-ayu-dark span.cm-comment.cm-def { color: rgba(57, 186, 230, 80); }
+.cm-s-ayu-dark span.cm-comment.cm-tag { color: #39bae6; }
+.cm-s-ayu-dark span.cm-comment.cm-type { color: #5998a6; }
+
+.cm-s-ayu-dark span.cm-property, .cm-s-ayu-dark span.cm-attribute { color: #ffb454; }  
+.cm-s-ayu-dark span.cm-keyword { color: #ff8f40; } 
+.cm-s-ayu-dark span.cm-builtin { color: #e6b450; }
+.cm-s-ayu-dark span.cm-string { color: #c2d94c; }
+
+.cm-s-ayu-dark span.cm-variable { color: #b3b1ad; }
+.cm-s-ayu-dark span.cm-variable-2 { color: #f07178; }
+.cm-s-ayu-dark span.cm-variable-3 { color: #39bae6; }
+.cm-s-ayu-dark span.cm-type { color: #ff8f40; }
+.cm-s-ayu-dark span.cm-def { color: #ffee99; }
+.cm-s-ayu-dark span.cm-bracket { color: #f8f8f2; }
+.cm-s-ayu-dark span.cm-tag { color: rgba(57, 186, 230, 80); }
+.cm-s-ayu-dark span.cm-header { color: #c2d94c; }
+.cm-s-ayu-dark span.cm-link { color: #39bae6; }
+.cm-s-ayu-dark span.cm-error { color: #ff3333; } 
+
+.cm-s-ayu-dark .CodeMirror-activeline-background { background: #01060e; }
+.cm-s-ayu-dark .CodeMirror-matchingbracket {
+  text-decoration: underline;
+  color: white !important;
+}
diff --git a/vendor/codemirror/theme/ayu-mirage.css b/vendor/codemirror/theme/ayu-mirage.css
new file mode 100644
index 00000000..7a5b50ce
--- /dev/null
+++ b/vendor/codemirror/theme/ayu-mirage.css
@@ -0,0 +1,43 @@
+/* Based on https://github.com/dempfi/ayu */
+
+.cm-s-ayu-mirage.CodeMirror { background: #1f2430; color: #cbccc6; }
+.cm-s-ayu-mirage div.CodeMirror-selected { background: #34455a; }
+.cm-s-ayu-mirage .CodeMirror-line::selection, .cm-s-ayu-mirage .CodeMirror-line > span::selection, .cm-s-ayu-mirage .CodeMirror-line > span > span::selection { background: #34455a; }
+.cm-s-ayu-mirage .CodeMirror-line::-moz-selection, .cm-s-ayu-mirage .CodeMirror-line > span::-moz-selection, .cm-s-ayu-mirage .CodeMirror-line > span > span::-moz-selection { background: rgba(25, 30, 42, 99); }
+.cm-s-ayu-mirage .CodeMirror-gutters { background: #1f2430; border-right: 0px; }
+.cm-s-ayu-mirage .CodeMirror-guttermarker { color: white; }
+.cm-s-ayu-mirage .CodeMirror-guttermarker-subtle { color:  rgba(112, 122, 140, 66); }
+.cm-s-ayu-mirage .CodeMirror-linenumber { color: rgba(61, 66, 77, 99); }
+.cm-s-ayu-mirage .CodeMirror-cursor { border-left: 1px solid #ffcc66; }
+
+.cm-s-ayu-mirage span.cm-comment { color: #5c6773; font-style:italic; }
+.cm-s-ayu-mirage span.cm-atom { color: #ae81ff; }
+.cm-s-ayu-mirage span.cm-number { color: #ffcc66; }
+
+.cm-s-ayu-mirage span.cm-comment.cm-attribute { color: #ffd580; }
+.cm-s-ayu-mirage span.cm-comment.cm-def { color: #d4bfff; }
+.cm-s-ayu-mirage span.cm-comment.cm-tag { color: #5ccfe6; }
+.cm-s-ayu-mirage span.cm-comment.cm-type { color: #5998a6; }
+
+.cm-s-ayu-mirage span.cm-property { color: #f29e74; }
+.cm-s-ayu-mirage span.cm-attribute { color: #ffd580; }  
+.cm-s-ayu-mirage span.cm-keyword { color: #ffa759; } 
+.cm-s-ayu-mirage span.cm-builtin { color: #ffcc66; }
+.cm-s-ayu-mirage span.cm-string { color: #bae67e; }
+
+.cm-s-ayu-mirage span.cm-variable { color: #cbccc6; }
+.cm-s-ayu-mirage span.cm-variable-2 { color: #f28779; }
+.cm-s-ayu-mirage span.cm-variable-3 { color: #5ccfe6; }
+.cm-s-ayu-mirage span.cm-type { color: #ffa759; }
+.cm-s-ayu-mirage span.cm-def { color: #ffd580; }
+.cm-s-ayu-mirage span.cm-bracket { color: rgba(92, 207, 230, 80); }
+.cm-s-ayu-mirage span.cm-tag { color: #5ccfe6; }
+.cm-s-ayu-mirage span.cm-header { color: #bae67e; }
+.cm-s-ayu-mirage span.cm-link { color: #5ccfe6; }
+.cm-s-ayu-mirage span.cm-error { color: #ff3333; } 
+
+.cm-s-ayu-mirage .CodeMirror-activeline-background { background: #191e2a; }
+.cm-s-ayu-mirage .CodeMirror-matchingbracket {
+  text-decoration: underline;
+  color: white !important;
+}
diff --git a/vendor/codemirror/theme/darcula.css b/vendor/codemirror/theme/darcula.css
index d4a0b530..2ec81a35 100644
--- a/vendor/codemirror/theme/darcula.css
+++ b/vendor/codemirror/theme/darcula.css
@@ -4,11 +4,11 @@
  */
 
 .cm-s-darcula  { font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, serif;}
-.cm-s-darcula.CodeMirror { background: #2B2B2B; color: #A9B7C6; } 
+.cm-s-darcula.CodeMirror { background: #2B2B2B; color: #A9B7C6; }
 
 .cm-s-darcula span.cm-meta { color: #BBB529; }
 .cm-s-darcula span.cm-number { color: #6897BB; }
-.cm-s-darcula span.cm-keyword { color: #CC7832; line-height: 1em; font-weight: bold; }  
+.cm-s-darcula span.cm-keyword { color: #CC7832; line-height: 1em; font-weight: bold; }
 .cm-s-darcula span.cm-def { color: #A9B7C6; font-style: italic; }
 .cm-s-darcula span.cm-variable { color: #A9B7C6; }
 .cm-s-darcula span.cm-variable-2 { color: #A9B7C6; }
@@ -18,7 +18,7 @@
 .cm-s-darcula span.cm-operator { color: #A9B7C6; }
 .cm-s-darcula span.cm-string { color: #6A8759; }
 .cm-s-darcula span.cm-string-2 { color: #6A8759; }
-.cm-s-darcula span.cm-comment { color: #61A151; font-style: italic; } 
+.cm-s-darcula span.cm-comment { color: #61A151; font-style: italic; }
 .cm-s-darcula span.cm-link { color: #CC7832; }
 .cm-s-darcula span.cm-atom { color: #CC7832; }
 .cm-s-darcula span.cm-error { color: #BC3F3C; }
@@ -28,16 +28,18 @@
 .cm-s-darcula span.cm-bracket { color: #A9B7C6; }
 .cm-s-darcula span.cm-builtin { color: #FF9E59; }
 .cm-s-darcula span.cm-special { color: #FF9E59; }
+.cm-s-darcula span.cm-matchhighlight { color: #FFFFFF; background-color: rgba(50, 89, 48, .7); font-weight: normal;}
+.cm-s-darcula span.cm-searching { color: #FFFFFF; background-color: rgba(61, 115, 59, .7); font-weight: normal;}
 
-.cm-s-darcula .CodeMirror-cursor { border-left: 1px solid #A9B7C6; }  
-.cm-s-darcula .CodeMirror-activeline-background { background: #323232; } 
-.cm-s-darcula .CodeMirror-gutters { background: #313335; border-right: 1px solid #313335; } 
-.cm-s-darcula .CodeMirror-guttermarker { color: #FFEE80; }  
-.cm-s-darcula .CodeMirror-guttermarker-subtle { color: #D0D0D0; }  
-.cm-s-darcula .CodeMirrir-linenumber { color: #606366; } 
-.cm-s-darcula .CodeMirror-matchingbracket { background-color: #3B514D; color: #FFEF28 !important; font-weight: bold; } 
+.cm-s-darcula .CodeMirror-cursor { border-left: 1px solid #A9B7C6; }
+.cm-s-darcula .CodeMirror-activeline-background { background: #323232; }
+.cm-s-darcula .CodeMirror-gutters { background: #313335; border-right: 1px solid #313335; }
+.cm-s-darcula .CodeMirror-guttermarker { color: #FFEE80; }
+.cm-s-darcula .CodeMirror-guttermarker-subtle { color: #D0D0D0; }
+.cm-s-darcula .CodeMirrir-linenumber { color: #606366; }
+.cm-s-darcula .CodeMirror-matchingbracket { background-color: #3B514D; color: #FFEF28 !important; font-weight: bold; }
 
-.cm-s-darcula div.CodeMirror-selected { background: #214283; }  
+.cm-s-darcula div.CodeMirror-selected { background: #214283; }
 
 .CodeMirror-hints.darcula {
   font-family: Menlo, Monaco, Consolas, 'Courier New', monospace;
diff --git a/vendor/codemirror/theme/material-darker.css b/vendor/codemirror/theme/material-darker.css
new file mode 100644
index 00000000..45b64efb
--- /dev/null
+++ b/vendor/codemirror/theme/material-darker.css
@@ -0,0 +1,135 @@
+/*
+  Name:       material
+  Author:     Mattia Astorino (http://github.com/equinusocio)
+  Website:    https://material-theme.site/
+*/
+
+.cm-s-material-darker.CodeMirror {
+  background-color: #212121;
+  color: #EEFFFF;
+}
+
+.cm-s-material-darker .CodeMirror-gutters {
+  background: #212121;
+  color: #545454;
+  border: none;
+}
+
+.cm-s-material-darker .CodeMirror-guttermarker,
+.cm-s-material-darker .CodeMirror-guttermarker-subtle,
+.cm-s-material-darker .CodeMirror-linenumber {
+  color: #545454;
+}
+
+.cm-s-material-darker .CodeMirror-cursor {
+  border-left: 1px solid #FFCC00;
+}
+
+.cm-s-material-darker div.CodeMirror-selected {
+  background: rgba(97, 97, 97, 0.2);
+}
+
+.cm-s-material-darker.CodeMirror-focused div.CodeMirror-selected {
+  background: rgba(97, 97, 97, 0.2);
+}
+
+.cm-s-material-darker .CodeMirror-line::selection,
+.cm-s-material-darker .CodeMirror-line>span::selection,
+.cm-s-material-darker .CodeMirror-line>span>span::selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material-darker .CodeMirror-line::-moz-selection,
+.cm-s-material-darker .CodeMirror-line>span::-moz-selection,
+.cm-s-material-darker .CodeMirror-line>span>span::-moz-selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material-darker .CodeMirror-activeline-background {
+  background: rgba(0, 0, 0, 0.5);
+}
+
+.cm-s-material-darker .cm-keyword {
+  color: #C792EA;
+}
+
+.cm-s-material-darker .cm-operator {
+  color: #89DDFF;
+}
+
+.cm-s-material-darker .cm-variable-2 {
+  color: #EEFFFF;
+}
+
+.cm-s-material-darker .cm-variable-3,
+.cm-s-material-darker .cm-type {
+  color: #f07178;
+}
+
+.cm-s-material-darker .cm-builtin {
+  color: #FFCB6B;
+}
+
+.cm-s-material-darker .cm-atom {
+  color: #F78C6C;
+}
+
+.cm-s-material-darker .cm-number {
+  color: #FF5370;
+}
+
+.cm-s-material-darker .cm-def {
+  color: #82AAFF;
+}
+
+.cm-s-material-darker .cm-string {
+  color: #C3E88D;
+}
+
+.cm-s-material-darker .cm-string-2 {
+  color: #f07178;
+}
+
+.cm-s-material-darker .cm-comment {
+  color: #545454;
+}
+
+.cm-s-material-darker .cm-variable {
+  color: #f07178;
+}
+
+.cm-s-material-darker .cm-tag {
+  color: #FF5370;
+}
+
+.cm-s-material-darker .cm-meta {
+  color: #FFCB6B;
+}
+
+.cm-s-material-darker .cm-attribute {
+  color: #C792EA;
+}
+
+.cm-s-material-darker .cm-property {
+  color: #C792EA;
+}
+
+.cm-s-material-darker .cm-qualifier {
+  color: #DECB6B;
+}
+
+.cm-s-material-darker .cm-variable-3,
+.cm-s-material-darker .cm-type {
+  color: #DECB6B;
+}
+
+
+.cm-s-material-darker .cm-error {
+  color: rgba(255, 255, 255, 1.0);
+  background-color: #FF5370;
+}
+
+.cm-s-material-darker .CodeMirror-matchingbracket {
+  text-decoration: underline;
+  color: white !important;
+}
\ No newline at end of file
diff --git a/vendor/codemirror/theme/material-ocean.css b/vendor/codemirror/theme/material-ocean.css
new file mode 100644
index 00000000..86a6f3cd
--- /dev/null
+++ b/vendor/codemirror/theme/material-ocean.css
@@ -0,0 +1,135 @@
+/*
+  Name:       material
+  Author:     Mattia Astorino (http://github.com/equinusocio)
+  Website:    https://material-theme.site/
+*/
+
+.cm-s-material-ocean.CodeMirror {
+  background-color: #0F111A;
+  color: #8F93A2;
+}
+
+.cm-s-material-ocean .CodeMirror-gutters {
+  background: #0F111A;
+  color: #464B5D;
+  border: none;
+}
+
+.cm-s-material-ocean .CodeMirror-guttermarker,
+.cm-s-material-ocean .CodeMirror-guttermarker-subtle,
+.cm-s-material-ocean .CodeMirror-linenumber {
+  color: #464B5D;
+}
+
+.cm-s-material-ocean .CodeMirror-cursor {
+  border-left: 1px solid #FFCC00;
+}
+
+.cm-s-material-ocean div.CodeMirror-selected {
+  background: rgba(113, 124, 180, 0.2);
+}
+
+.cm-s-material-ocean.CodeMirror-focused div.CodeMirror-selected {
+  background: rgba(113, 124, 180, 0.2);
+}
+
+.cm-s-material-ocean .CodeMirror-line::selection,
+.cm-s-material-ocean .CodeMirror-line>span::selection,
+.cm-s-material-ocean .CodeMirror-line>span>span::selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material-ocean .CodeMirror-line::-moz-selection,
+.cm-s-material-ocean .CodeMirror-line>span::-moz-selection,
+.cm-s-material-ocean .CodeMirror-line>span>span::-moz-selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material-ocean .CodeMirror-activeline-background {
+  background: rgba(0, 0, 0, 0.5);
+}
+
+.cm-s-material-ocean .cm-keyword {
+  color: #C792EA;
+}
+
+.cm-s-material-ocean .cm-operator {
+  color: #89DDFF;
+}
+
+.cm-s-material-ocean .cm-variable-2 {
+  color: #EEFFFF;
+}
+
+.cm-s-material-ocean .cm-variable-3,
+.cm-s-material-ocean .cm-type {
+  color: #f07178;
+}
+
+.cm-s-material-ocean .cm-builtin {
+  color: #FFCB6B;
+}
+
+.cm-s-material-ocean .cm-atom {
+  color: #F78C6C;
+}
+
+.cm-s-material-ocean .cm-number {
+  color: #FF5370;
+}
+
+.cm-s-material-ocean .cm-def {
+  color: #82AAFF;
+}
+
+.cm-s-material-ocean .cm-string {
+  color: #C3E88D;
+}
+
+.cm-s-material-ocean .cm-string-2 {
+  color: #f07178;
+}
+
+.cm-s-material-ocean .cm-comment {
+  color: #464B5D;
+}
+
+.cm-s-material-ocean .cm-variable {
+  color: #f07178;
+}
+
+.cm-s-material-ocean .cm-tag {
+  color: #FF5370;
+}
+
+.cm-s-material-ocean .cm-meta {
+  color: #FFCB6B;
+}
+
+.cm-s-material-ocean .cm-attribute {
+  color: #C792EA;
+}
+
+.cm-s-material-ocean .cm-property {
+  color: #C792EA;
+}
+
+.cm-s-material-ocean .cm-qualifier {
+  color: #DECB6B;
+}
+
+.cm-s-material-ocean .cm-variable-3,
+.cm-s-material-ocean .cm-type {
+  color: #DECB6B;
+}
+
+
+.cm-s-material-ocean .cm-error {
+  color: rgba(255, 255, 255, 1.0);
+  background-color: #FF5370;
+}
+
+.cm-s-material-ocean .CodeMirror-matchingbracket {
+  text-decoration: underline;
+  color: white !important;
+}
\ No newline at end of file
diff --git a/vendor/codemirror/theme/material-palenight.css b/vendor/codemirror/theme/material-palenight.css
new file mode 100644
index 00000000..66d53dd3
--- /dev/null
+++ b/vendor/codemirror/theme/material-palenight.css
@@ -0,0 +1,135 @@
+/*
+  Name:       material
+  Author:     Mattia Astorino (http://github.com/equinusocio)
+  Website:    https://material-theme.site/
+*/
+
+.cm-s-material-palenight.CodeMirror {
+  background-color: #292D3E;
+  color: #A6ACCD;
+}
+
+.cm-s-material-palenight .CodeMirror-gutters {
+  background: #292D3E;
+  color: #676E95;
+  border: none;
+}
+
+.cm-s-material-palenight .CodeMirror-guttermarker,
+.cm-s-material-palenight .CodeMirror-guttermarker-subtle,
+.cm-s-material-palenight .CodeMirror-linenumber {
+  color: #676E95;
+}
+
+.cm-s-material-palenight .CodeMirror-cursor {
+  border-left: 1px solid #FFCC00;
+}
+
+.cm-s-material-palenight div.CodeMirror-selected {
+  background: rgba(113, 124, 180, 0.2);
+}
+
+.cm-s-material-palenight.CodeMirror-focused div.CodeMirror-selected {
+  background: rgba(113, 124, 180, 0.2);
+}
+
+.cm-s-material-palenight .CodeMirror-line::selection,
+.cm-s-material-palenight .CodeMirror-line>span::selection,
+.cm-s-material-palenight .CodeMirror-line>span>span::selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material-palenight .CodeMirror-line::-moz-selection,
+.cm-s-material-palenight .CodeMirror-line>span::-moz-selection,
+.cm-s-material-palenight .CodeMirror-line>span>span::-moz-selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material-palenight .CodeMirror-activeline-background {
+  background: rgba(0, 0, 0, 0.5);
+}
+
+.cm-s-material-palenight .cm-keyword {
+  color: #C792EA;
+}
+
+.cm-s-material-palenight .cm-operator {
+  color: #89DDFF;
+}
+
+.cm-s-material-palenight .cm-variable-2 {
+  color: #EEFFFF;
+}
+
+.cm-s-material-palenight .cm-variable-3,
+.cm-s-material-palenight .cm-type {
+  color: #f07178;
+}
+
+.cm-s-material-palenight .cm-builtin {
+  color: #FFCB6B;
+}
+
+.cm-s-material-palenight .cm-atom {
+  color: #F78C6C;
+}
+
+.cm-s-material-palenight .cm-number {
+  color: #FF5370;
+}
+
+.cm-s-material-palenight .cm-def {
+  color: #82AAFF;
+}
+
+.cm-s-material-palenight .cm-string {
+  color: #C3E88D;
+}
+
+.cm-s-material-palenight .cm-string-2 {
+  color: #f07178;
+}
+
+.cm-s-material-palenight .cm-comment {
+  color: #676E95;
+}
+
+.cm-s-material-palenight .cm-variable {
+  color: #f07178;
+}
+
+.cm-s-material-palenight .cm-tag {
+  color: #FF5370;
+}
+
+.cm-s-material-palenight .cm-meta {
+  color: #FFCB6B;
+}
+
+.cm-s-material-palenight .cm-attribute {
+  color: #C792EA;
+}
+
+.cm-s-material-palenight .cm-property {
+  color: #C792EA;
+}
+
+.cm-s-material-palenight .cm-qualifier {
+  color: #DECB6B;
+}
+
+.cm-s-material-palenight .cm-variable-3,
+.cm-s-material-palenight .cm-type {
+  color: #DECB6B;
+}
+
+
+.cm-s-material-palenight .cm-error {
+  color: rgba(255, 255, 255, 1.0);
+  background-color: #FF5370;
+}
+
+.cm-s-material-palenight .CodeMirror-matchingbracket {
+  text-decoration: underline;
+  color: white !important;
+}
\ No newline at end of file
diff --git a/vendor/codemirror/theme/material.css b/vendor/codemirror/theme/material.css
index 84962a24..9ac17a36 100644
--- a/vendor/codemirror/theme/material.css
+++ b/vendor/codemirror/theme/material.css
@@ -1,53 +1,135 @@
 /*
-
-    Name:       material
-    Author:     Michael Kaminsky (http://github.com/mkaminsky11)
-
-    Original material color scheme by Mattia Astorino (https://github.com/equinusocio/material-theme)
-
+  Name:       material
+  Author:     Mattia Astorino (http://github.com/equinusocio)
+  Website:    https://material-theme.site/
 */
 
 .cm-s-material.CodeMirror {
   background-color: #263238;
-  color: rgba(233, 237, 237, 1);
+  color: #EEFFFF;
 }
+
 .cm-s-material .CodeMirror-gutters {
   background: #263238;
-  color: rgb(83,127,126);
+  color: #546E7A;
   border: none;
 }
-.cm-s-material .CodeMirror-guttermarker, .cm-s-material .CodeMirror-guttermarker-subtle, .cm-s-material .CodeMirror-linenumber { color: rgb(83,127,126); }
-.cm-s-material .CodeMirror-cursor { border-left: 1px solid #f8f8f0; }
-.cm-s-material div.CodeMirror-selected { background: rgba(255, 255, 255, 0.15); }
-.cm-s-material.CodeMirror-focused div.CodeMirror-selected { background: rgba(255, 255, 255, 0.10); }
-.cm-s-material .CodeMirror-line::selection, .cm-s-material .CodeMirror-line > span::selection, .cm-s-material .CodeMirror-line > span > span::selection { background: rgba(255, 255, 255, 0.10); }
-.cm-s-material .CodeMirror-line::-moz-selection, .cm-s-material .CodeMirror-line > span::-moz-selection, .cm-s-material .CodeMirror-line > span > span::-moz-selection { background: rgba(255, 255, 255, 0.10); }
 
-.cm-s-material .CodeMirror-activeline-background { background: rgba(0, 0, 0, 0); }
-.cm-s-material .cm-keyword { color: rgba(199, 146, 234, 1); }
-.cm-s-material .cm-operator { color: rgba(233, 237, 237, 1); }
-.cm-s-material .cm-variable-2 { color: #80CBC4; }
-.cm-s-material .cm-variable-3, .cm-s-material .cm-type { color: #82B1FF; }
-.cm-s-material .cm-builtin { color: #DECB6B; }
-.cm-s-material .cm-atom { color: #F77669; }
-.cm-s-material .cm-number { color: #F77669; }
-.cm-s-material .cm-def { color: rgba(233, 237, 237, 1); }
-.cm-s-material .cm-string { color: #C3E88D; }
-.cm-s-material .cm-string-2 { color: #80CBC4; }
-.cm-s-material .cm-comment { color: #546E7A; }
-.cm-s-material .cm-variable { color: #82B1FF; }
-.cm-s-material .cm-tag { color: #80CBC4; }
-.cm-s-material .cm-meta { color: #80CBC4; }
-.cm-s-material .cm-attribute { color: #FFCB6B; }
-.cm-s-material .cm-property { color: #80CBAE; }
-.cm-s-material .cm-qualifier { color: #DECB6B; }
-.cm-s-material .cm-variable-3, .cm-s-material .cm-type { color: #DECB6B; }
-.cm-s-material .cm-tag { color: rgba(255, 83, 112, 1); }
+.cm-s-material .CodeMirror-guttermarker,
+.cm-s-material .CodeMirror-guttermarker-subtle,
+.cm-s-material .CodeMirror-linenumber {
+  color: #546E7A;
+}
+
+.cm-s-material .CodeMirror-cursor {
+  border-left: 1px solid #FFCC00;
+}
+
+.cm-s-material div.CodeMirror-selected {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material.CodeMirror-focused div.CodeMirror-selected {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material .CodeMirror-line::selection,
+.cm-s-material .CodeMirror-line>span::selection,
+.cm-s-material .CodeMirror-line>span>span::selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material .CodeMirror-line::-moz-selection,
+.cm-s-material .CodeMirror-line>span::-moz-selection,
+.cm-s-material .CodeMirror-line>span>span::-moz-selection {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-material .CodeMirror-activeline-background {
+  background: rgba(0, 0, 0, 0.5);
+}
+
+.cm-s-material .cm-keyword {
+  color: #C792EA;
+}
+
+.cm-s-material .cm-operator {
+  color: #89DDFF;
+}
+
+.cm-s-material .cm-variable-2 {
+  color: #EEFFFF;
+}
+
+.cm-s-material .cm-variable-3,
+.cm-s-material .cm-type {
+  color: #f07178;
+}
+
+.cm-s-material .cm-builtin {
+  color: #FFCB6B;
+}
+
+.cm-s-material .cm-atom {
+  color: #F78C6C;
+}
+
+.cm-s-material .cm-number {
+  color: #FF5370;
+}
+
+.cm-s-material .cm-def {
+  color: #82AAFF;
+}
+
+.cm-s-material .cm-string {
+  color: #C3E88D;
+}
+
+.cm-s-material .cm-string-2 {
+  color: #f07178;
+}
+
+.cm-s-material .cm-comment {
+  color: #546E7A;
+}
+
+.cm-s-material .cm-variable {
+  color: #f07178;
+}
+
+.cm-s-material .cm-tag {
+  color: #FF5370;
+}
+
+.cm-s-material .cm-meta {
+  color: #FFCB6B;
+}
+
+.cm-s-material .cm-attribute {
+  color: #C792EA;
+}
+
+.cm-s-material .cm-property {
+  color: #C792EA;
+}
+
+.cm-s-material .cm-qualifier {
+  color: #DECB6B;
+}
+
+.cm-s-material .cm-variable-3,
+.cm-s-material .cm-type {
+  color: #DECB6B;
+}
+
+
 .cm-s-material .cm-error {
   color: rgba(255, 255, 255, 1.0);
-  background-color: #EC5F67;
+  background-color: #FF5370;
 }
+
 .cm-s-material .CodeMirror-matchingbracket {
   text-decoration: underline;
   color: white !important;
-}
+}
\ No newline at end of file
diff --git a/vendor/codemirror/theme/moxer.css b/vendor/codemirror/theme/moxer.css
new file mode 100644
index 00000000..b3ca35e3
--- /dev/null
+++ b/vendor/codemirror/theme/moxer.css
@@ -0,0 +1,143 @@
+/*
+  Name:       Moxer Theme
+  Author:     Mattia Astorino (http://github.com/equinusocio)
+  Website:    https://github.com/moxer-theme/moxer-code
+*/
+
+.cm-s-moxer.CodeMirror {
+  background-color: #090A0F;
+  color: #8E95B4;
+  line-height: 1.8;
+}
+
+.cm-s-moxer .CodeMirror-gutters {
+  background: #090A0F;
+  color: #35394B;
+  border: none;
+}
+
+.cm-s-moxer .CodeMirror-guttermarker,
+.cm-s-moxer .CodeMirror-guttermarker-subtle,
+.cm-s-moxer .CodeMirror-linenumber {
+  color: #35394B;
+}
+
+
+.cm-s-moxer .CodeMirror-cursor {
+  border-left: 1px solid #FFCC00;
+}
+
+.cm-s-moxer div.CodeMirror-selected {
+  background: rgba(128, 203, 196, 0.2);
+}
+
+.cm-s-moxer.CodeMirror-focused div.CodeMirror-selected {
+  background: #212431;
+}
+
+.cm-s-moxer .CodeMirror-line::selection,
+.cm-s-moxer .CodeMirror-line>span::selection,
+.cm-s-moxer .CodeMirror-line>span>span::selection {
+  background: #212431;
+}
+
+.cm-s-moxer .CodeMirror-line::-moz-selection,
+.cm-s-moxer .CodeMirror-line>span::-moz-selection,
+.cm-s-moxer .CodeMirror-line>span>span::-moz-selection {
+  background: #212431;
+}
+
+.cm-s-moxer .CodeMirror-activeline-background,
+.cm-s-moxer .CodeMirror-activeline-gutter .CodeMirror-linenumber {
+  background: rgba(33, 36, 49, 0.5);
+}
+
+.cm-s-moxer .cm-keyword {
+  color: #D46C6C;
+}
+
+.cm-s-moxer .cm-operator {
+  color: #D46C6C;
+}
+
+.cm-s-moxer .cm-variable-2 {
+  color: #81C5DA;
+}
+
+
+.cm-s-moxer .cm-variable-3,
+.cm-s-moxer .cm-type {
+  color: #f07178;
+}
+
+.cm-s-moxer .cm-builtin {
+  color: #FFCB6B;
+}
+
+.cm-s-moxer .cm-atom {
+  color: #A99BE2;
+}
+
+.cm-s-moxer .cm-number {
+  color: #7CA4C0;
+}
+
+.cm-s-moxer .cm-def {
+  color: #F5DFA5;
+}
+
+.cm-s-moxer .CodeMirror-line .cm-def ~ .cm-def {
+  color: #81C5DA;
+}
+
+.cm-s-moxer .cm-string {
+  color: #B2E4AE;
+}
+
+.cm-s-moxer .cm-string-2 {
+  color: #f07178;
+}
+
+.cm-s-moxer .cm-comment {
+  color: #3F445A;
+}
+
+.cm-s-moxer .cm-variable {
+  color: #8E95B4;
+}
+
+.cm-s-moxer .cm-tag {
+  color: #FF5370;
+}
+
+.cm-s-moxer .cm-meta {
+  color: #FFCB6B;
+}
+
+.cm-s-moxer .cm-attribute {
+  color: #C792EA;
+}
+
+.cm-s-moxer .cm-property {
+  color: #81C5DA;
+}
+
+.cm-s-moxer .cm-qualifier {
+  color: #DECB6B;
+}
+
+.cm-s-moxer .cm-variable-3,
+.cm-s-moxer .cm-type {
+  color: #DECB6B;
+}
+
+
+.cm-s-moxer .cm-error {
+  color: rgba(255, 255, 255, 1.0);
+  background-color: #FF5370;
+}
+
+.cm-s-moxer .CodeMirror-matchingbracket {
+  text-decoration: underline;
+  color: white !important;
+}
\ No newline at end of file