diff --git a/lib/ace/editor.js b/lib/ace/editor.js
index 1a3eed0a..6ce561bb 100644
--- a/lib/ace/editor.js
+++ b/lib/ace/editor.js
@@ -2684,6 +2684,7 @@ config.defineOptions(Editor.prototype, "editor", {
     useSoftTabs: "session",
     tabSize: "session",
     wrap: "session",
+    indentedSoftWrap: "session",
     foldStyle: "session",
     mode: "session"
 });
diff --git a/lib/ace/ext/themelist.js b/lib/ace/ext/themelist.js
index 4e3f0ad7..2350a2e2 100644
--- a/lib/ace/ext/themelist.js
+++ b/lib/ace/ext/themelist.js
@@ -51,6 +51,7 @@ var themeData = [
     ["Dreamweaver"    ],
     ["Eclipse"        ],
     ["GitHub"         ],
+    ["IPlastic"       ],
     ["Solarized Light"],
     ["TextMate"       ],
     ["Tomorrow"       ],
diff --git a/lib/ace/keyboard/vim.js b/lib/ace/keyboard/vim.js
index 2eae6b28..1b4507b3 100644
--- a/lib/ace/keyboard/vim.js
+++ b/lib/ace/keyboard/vim.js
@@ -654,6 +654,9 @@ define(function(require, exports, module) {
   this.refresh = function() {
     return this.ace.resize(true);
   };
+  this.getMode = function() {
+    return { name : this.getOption("mode") };
+  }
 }).call(CodeMirror.prototype);
   function toAcePos(cmPos) {
     return {row: cmPos.line, column: cmPos.ch};
@@ -1185,18 +1188,30 @@ dom.importCssString(".normal-mode .ace_cursor{\
     }
 
     var options = {};
-    function defineOption(name, defaultValue, type) {
-      if (defaultValue === undefined) { throw Error('defaultValue is required'); }
+    function defineOption(name, defaultValue, type, aliases, callback) {
+      if (defaultValue === undefined && !callback) {
+        throw Error('defaultValue is required unless callback is provided');
+      }
       if (!type) { type = 'string'; }
       options[name] = {
         type: type,
-        defaultValue: defaultValue
+        defaultValue: defaultValue,
+        callback: callback
       };
-      setOption(name, defaultValue);
+      if (aliases) {
+        for (var i = 0; i < aliases.length; i++) {
+          options[aliases[i]] = options[name];
+        }
+      }
+      if (defaultValue) {
+        setOption(name, defaultValue);
+      }
     }
 
-    function setOption(name, value, cm) {
+    function setOption(name, value, cm, cfg) {
       var option = options[name];
+      cfg = cfg || {};
+      var scope = cfg.scope;
       if (!option) {
         throw Error('Unknown option: ' + name);
       }
@@ -1208,17 +1223,60 @@ dom.importCssString(".normal-mode .ace_cursor{\
           value = true;
         }
       }
-      option.value = option.type == 'boolean' ? !!value : value;
+      if (option.callback) {
+        if (scope !== 'local') {
+          option.callback(value, undefined);
+        }
+        if (scope !== 'global' && cm) {
+          option.callback(value, cm);
+        }
+      } else {
+        if (scope !== 'local') {
+          option.value = option.type == 'boolean' ? !!value : value;
+        }
+        if (scope !== 'global' && cm) {
+          cm.state.vim.options[name] = {value: value};
+        }
+      }
     }
 
-    function getOption(name) {
+    function getOption(name, cm, cfg) {
       var option = options[name];
+      cfg = cfg || {};
+      var scope = cfg.scope;
       if (!option) {
         throw Error('Unknown option: ' + name);
       }
-      return option.value;
+      if (option.callback) {
+        var local = cm && option.callback(undefined, cm);
+        if (scope !== 'global' && local !== undefined) {
+          return local;
+        }
+        if (scope !== 'local') {
+          return option.callback();
+        }
+        return;
+      } else {
+        var local = (scope !== 'global') && (cm && cm.state.vim.options[name]);
+        return (local || (scope !== 'local') && option || {}).value;
+      }
     }
 
+    defineOption('filetype', undefined, 'string', ['ft'], function(name, cm) {
+      // Option is local. Do nothing for global.
+      if (cm === undefined) {
+        return;
+      }
+      // The 'filetype' option proxies to the CodeMirror 'mode' option.
+      if (name === undefined) {
+        var mode = cm.getMode().name;
+        return mode == 'null' ? '' : mode;
+      } else {
+        var mode = name == '' ? 'null' : name;
+        cm.setOption('mode', mode);
+      }
+    });
+
     var createCircularJumpList = function() {
       var size = 100;
       var pointer = -1;
@@ -1371,8 +1429,9 @@ dom.importCssString(".normal-mode .ace_cursor{\
           visualBlock: false,
           lastSelection: null,
           lastPastedText: null,
-          sel: {
-          }
+          sel: {},
+          // Buffer-local/window-local values of vim options.
+          options: {}
         };
       }
       return cm.state.vim;
@@ -1434,6 +1493,8 @@ dom.importCssString(".normal-mode .ace_cursor{\
         // remove user defined key bindings.
         exCommandDispatcher.unmap(lhs, ctx);
       },
+      // TODO: Expose setOption and getOption as instance methods. Need to decide how to namespace
+      // them, or somehow make them work with the existing CodeMirror setOption/getOption API.
       setOption: setOption,
       getOption: getOption,
       defineOption: defineOption,
@@ -1985,7 +2046,8 @@ dom.importCssString(".normal-mode .ace_cursor{\
         }
         function onPromptKeyDown(e, query, close) {
           var keyName = CodeMirror.keyName(e);
-          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[') {
+          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
+              (keyName == 'Backspace' && query == '')) {
             vimGlobalState.searchHistoryController.pushInput(query);
             vimGlobalState.searchHistoryController.reset();
             updateSearchQuery(cm, originalQuery);
@@ -1995,6 +2057,10 @@ dom.importCssString(".normal-mode .ace_cursor{\
             clearInputState(cm);
             close();
             cm.focus();
+          } else if (keyName == 'Ctrl-U') {
+            // Ctrl-U clears input.
+            CodeMirror.e_stop(e);
+            close('');
           }
         }
         switch (command.searchArgs.querySrc) {
@@ -2055,7 +2121,8 @@ dom.importCssString(".normal-mode .ace_cursor{\
         }
         function onPromptKeyDown(e, input, close) {
           var keyName = CodeMirror.keyName(e), up;
-          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[') {
+          if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[' ||
+              (keyName == 'Backspace' && input == '')) {
             vimGlobalState.exCommandHistoryController.pushInput(input);
             vimGlobalState.exCommandHistoryController.reset();
             CodeMirror.e_stop(e);
@@ -2067,6 +2134,10 @@ dom.importCssString(".normal-mode .ace_cursor{\
             up = keyName == 'Up' ? true : false;
             input = vimGlobalState.exCommandHistoryController.nextMatch(input, up) || '';
             close(input);
+          } else if (keyName == 'Ctrl-U') {
+            // Ctrl-U clears input.
+            CodeMirror.e_stop(e);
+            close('');
           } else {
             if ( keyName != 'Left' && keyName != 'Right' && keyName != 'Ctrl' && keyName != 'Alt' && keyName != 'Shift')
               vimGlobalState.exCommandHistoryController.reset();
@@ -2096,8 +2167,8 @@ dom.importCssString(".normal-mode .ace_cursor{\
         var registerName = inputState.registerName;
         var sel = vim.sel;
         // TODO: Make sure cm and vim selections are identical outside visual mode.
-        var origHead = copyCursor(vim.visualMode ? sel.head: cm.getCursor('head'));
-        var origAnchor = copyCursor(vim.visualMode ? sel.anchor : cm.getCursor('anchor'));
+        var origHead = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.head): cm.getCursor('head'));
+        var origAnchor = copyCursor(vim.visualMode ? clipCursorToContent(cm, sel.anchor) : cm.getCursor('anchor'));
         var oldHead = copyCursor(origHead);
         var oldAnchor = copyCursor(origAnchor);
         var newHead, newAnchor;
@@ -2672,10 +2743,11 @@ dom.importCssString(".normal-mode .ace_cursor{\
           var anchor = ranges[0].anchor,
               head = ranges[0].head;
           text = cm.getRange(anchor, head);
-          if (!isWhiteSpaceString(text)) {
+          var lastState = vim.lastEditInputState || {};
+          if (lastState.motion == "moveByWords" && !isWhiteSpaceString(text)) {
             // Exclude trailing whitespace if the range is not all whitespace.
             var match = (/\s+$/).exec(text);
-            if (match) {
+            if (match && lastState.motionArgs && lastState.motionArgs.forward) {
               head = offsetCursor(head, 0, - match[0].length);
               text = text.slice(0, - match[0].length);
             }
@@ -4307,7 +4379,8 @@ dom.importCssString(".normal-mode .ace_cursor{\
     function dialog(cm, template, shortText, onClose, options) {
       if (cm.openDialog) {
         cm.openDialog(template, onClose, { bottom: true, value: options.value,
-            onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp, select: options.select });
+            onKeyDown: options.onKeyDown, onKeyUp: options.onKeyUp,
+            selectValueOnOpen: false});
       }
       else {
         onClose(prompt(shortText, ''));
@@ -4662,6 +4735,7 @@ dom.importCssString(".normal-mode .ace_cursor{\
     // pair of commands that have a shared prefix, at least one of their
     // shortNames must not match the prefix of the other command.
     var defaultExCommandMap = [
+      { name: 'colorscheme', shortName: 'colo' },
       { name: 'map' },
       { name: 'imap', shortName: 'im' },
       { name: 'nmap', shortName: 'nm' },
@@ -4670,7 +4744,10 @@ dom.importCssString(".normal-mode .ace_cursor{\
       { name: 'write', shortName: 'w' },
       { name: 'undo', shortName: 'u' },
       { name: 'redo', shortName: 'red' },
-      { name: 'set', shortName: 'set' },
+      { name: 'set', shortName: 'se' },
+      { name: 'set', shortName: 'se' },
+      { name: 'setlocal', shortName: 'setl' },
+      { name: 'setglobal', shortName: 'setg' },
       { name: 'sort', shortName: 'sor' },
       { name: 'substitute', shortName: 's', possiblyAsync: true },
       { name: 'nohlsearch', shortName: 'noh' },
@@ -4683,6 +4760,13 @@ dom.importCssString(".normal-mode .ace_cursor{\
     };
     ExCommandDispatcher.prototype = {
       processCommand: function(cm, input, opt_params) {
+        var that = this;
+        cm.operation(function () {
+          cm.curOp.isVimOp = true;
+          that._processCommand(cm, input, opt_params);
+        });
+      },
+      _processCommand: function(cm, input, opt_params) {
         var vim = cm.state.vim;
         var commandHistoryRegister = vimGlobalState.registerController.getRegister(':');
         var previousCommand = commandHistoryRegister.toString();
@@ -4895,6 +4979,13 @@ dom.importCssString(".normal-mode .ace_cursor{\
     };
 
     var exCommands = {
+      colorscheme: function(cm, params) {
+        if (!params.args || params.args.length < 1) {
+          showConfirm(cm, cm.getOption('theme'));
+          return;
+        }
+        cm.setOption('theme', params.args[0]);
+      },
       map: function(cm, params, ctx) {
         var mapArgs = params.args;
         if (!mapArgs || mapArgs.length < 2) {
@@ -4928,6 +5019,9 @@ dom.importCssString(".normal-mode .ace_cursor{\
       },
       set: function(cm, params) {
         var setArgs = params.args;
+        // Options passed through to the setOption/getOption calls. May be passed in by the
+        // local/global versions of the set command
+        var setCfg = params.setCfg || {};
         if (!setArgs || setArgs.length < 1) {
           if (cm) {
             showConfirm(cm, 'Invalid mapping: ' + params.input);
@@ -4951,24 +5045,35 @@ dom.importCssString(".normal-mode .ace_cursor{\
           optionName = optionName.substring(2);
           value = false;
         }
+
         var optionIsBoolean = options[optionName] && options[optionName].type == 'boolean';
         if (optionIsBoolean && value == undefined) {
           // Calling set with a boolean option sets it to true.
           value = true;
         }
-        if (!optionIsBoolean && !value || forceGet) {
-          var oldValue = getOption(optionName);
-          // If no value is provided, then we assume this is a get.
+        // If no value is provided, then we assume this is a get.
+        if (!optionIsBoolean && value === undefined || forceGet) {
+          var oldValue = getOption(optionName, cm, setCfg);
           if (oldValue === true || oldValue === false) {
             showConfirm(cm, ' ' + (oldValue ? '' : 'no') + optionName);
           } else {
             showConfirm(cm, '  ' + optionName + '=' + oldValue);
           }
         } else {
-          setOption(optionName, value, cm);
+          setOption(optionName, value, cm, setCfg);
         }
       },
-      registers: function(cm,params) {
+      setlocal: function (cm, params) {
+        // setCfg is passed through to setOption
+        params.setCfg = {scope: 'local'};
+        this.set(cm, params);
+      },
+      setglobal: function (cm, params) {
+        // setCfg is passed through to setOption
+        params.setCfg = {scope: 'global'};
+        this.set(cm, params);
+      },
+      registers: function(cm, params) {
         var regArgs = params.args;
         var registers = vimGlobalState.registerController.registers;
         var regInfo = '----------Registers----------<br><br>';
@@ -5590,7 +5695,7 @@ dom.importCssString(".normal-mode .ace_cursor{\
     }
     function updateFakeCursor(cm) {
       var vim = cm.state.vim;
-      var from = copyCursor(vim.sel.head);
+      var from = clipCursorToContent(cm, copyCursor(vim.sel.head));
       var to = offsetCursor(from, 0, 1);
       if (vim.fakeCursor) {
         vim.fakeCursor.clear();
@@ -5601,7 +5706,7 @@ dom.importCssString(".normal-mode .ace_cursor{\
       var anchor = cm.getCursor('anchor');
       var head = cm.getCursor('head');
       // Enter or exit visual mode to match mouse selection.
-      if (vim.visualMode && cursorEqual(head, anchor) && lineLength(cm, head.line) > head.ch) {
+      if (vim.visualMode && !cm.somethingSelected()) {
         exitVisualMode(cm, false);
       } else if (!vim.visualMode && !vim.insertMode && cm.somethingSelected()) {
         vim.visualMode = true;
diff --git a/lib/ace/keyboard/vim_test.js b/lib/ace/keyboard/vim_test.js
index 788cfccb..127f0706 100644
--- a/lib/ace/keyboard/vim_test.js
+++ b/lib/ace/keyboard/vim_test.js
@@ -34,6 +34,7 @@ editor.session.setMode(new JavaScriptMode());
 function CodeMirror(place, opts) {
     if (opts.value != null)
         editor.session.setValue(opts.value);
+    editor.setOption("indentedSoftWrap", false);
     editor.setOption("wrap", opts.lineWrapping);
     editor.setOption("useSoftTabs", !opts.indentWithTabs);
     editor.setKeyboardHandler(null);
@@ -58,6 +59,7 @@ function CodeMirror(place, opts) {
     cm.setSize(500, 300);
     return cm;
 }
+CodeMirror.defineMode = function() {}
 for (var key in vim.CodeMirror)
     CodeMirror[key] = vim.CodeMirror[key];
 var editor;
@@ -595,7 +597,7 @@ testVim('{', function(cm, vim, helpers) {
   helpers.doKeys('6', '{');
   helpers.assertCursorAt(0, 0);
 }, { value: 'a\n\nb\nc\n\nd' });
-testVim('paragraph motions', function(cm, vim, helpers) {
+testVim('paragraph_motions', function(cm, vim, helpers) {
   cm.setCursor(10, 0);
   helpers.doKeys('{');
   helpers.assertCursorAt(4, 0);
@@ -1075,6 +1077,17 @@ testVim('cc_multiply_repeat', function(cm, vim, helpers) {
   is(register.linewise);
   eq('vim-insert', cm.getOption('keyMap'));
 });
+testVim('ct', function(cm, vim, helpers) {
+  cm.setCursor(0, 9);
+  helpers.doKeys('c', 't', 'w');
+  eq('  word1  word3', cm.getValue());
+  helpers.doKeys('<Esc>', 'c', '|');
+  eq(' word3', cm.getValue());
+  helpers.assertCursorAt(0, 0);
+  helpers.doKeys('<Esc>', '2', 'u', 'w', 'h');
+  helpers.doKeys('c', '2', 'g', 'e');
+  eq('  wordword3', cm.getValue());
+}, { value: '  word1  word2  word3'});
 testVim('cc_should_not_append_to_document', function(cm, vim, helpers) {
   var expectedLineCount = cm.lineCount();
   cm.setCursor(cm.lastLine(), 0);
@@ -1975,7 +1988,11 @@ testVim('visual_block_move_to_eol', function(cm, vim, helpers) {
   cm.setCursor(0, 0);
   helpers.doKeys('<C-v>', 'G', '$');
   var selections = cm.getSelections().join();
-  eq("123,45,6", selections);
+  eq('123,45,6', selections);
+  // Checks that with cursor at Infinity, finding words backwards still works.
+  helpers.doKeys('2', 'k', 'b');
+  selections = cm.getSelections().join();
+  eq('1', selections);
 }, {value: '123\n45\n6'});
 testVim('visual_block_different_line_lengths', function(cm, vim, helpers) {
   // test the block selection with lines of different length
@@ -2803,6 +2820,44 @@ testVim('exCommand_history', function(cm, vim, helpers) {
   onKeyDown({keyCode: keyCodes.Up}, input, close);
   eq(input, 'sort');
 }, {value: ''});
+testVim('search_clear', function(cm, vim, helpers) {
+  var onKeyDown;
+  var input = '';
+  var keyCodes = {
+    Ctrl: 17,
+    u: 85
+  };
+  cm.openDialog = function(template, callback, options) {
+    onKeyDown = options.onKeyDown;
+  };
+  var close = function(newVal) {
+    if (typeof newVal == 'string') input = newVal;
+  }
+  helpers.doKeys('/');
+  input = 'foo';
+  onKeyDown({keyCode: keyCodes.Ctrl}, input, close);
+  onKeyDown({keyCode: keyCodes.u, ctrlKey: true}, input, close);
+  eq(input, '');
+});
+testVim('exCommand_clear', function(cm, vim, helpers) {
+  var onKeyDown;
+  var input = '';
+  var keyCodes = {
+    Ctrl: 17,
+    u: 85
+  };
+  cm.openDialog = function(template, callback, options) {
+    onKeyDown = options.onKeyDown;
+  };
+  var close = function(newVal) {
+    if (typeof newVal == 'string') input = newVal;
+  }
+  helpers.doKeys(':');
+  input = 'foo';
+  onKeyDown({keyCode: keyCodes.Ctrl}, input, close);
+  onKeyDown({keyCode: keyCodes.u, ctrlKey: true}, input, close);
+  eq(input, '');
+});
 testVim('.', function(cm, vim, helpers) {
   cm.setCursor(0, 0);
   helpers.doKeys('2', 'd', 'w');
@@ -3753,17 +3808,111 @@ testVim('set_string', function(cm, vim, helpers) {
   eq('c', CodeMirror.Vim.getOption('testoption'));
 });
 testVim('ex_set_string', function(cm, vim, helpers) {
-  CodeMirror.Vim.defineOption('testoption', 'a', 'string');
+  CodeMirror.Vim.defineOption('testopt', 'a', 'string');
   // Test default value is set.
-  eq('a', CodeMirror.Vim.getOption('testoption'));
+  eq('a', CodeMirror.Vim.getOption('testopt'));
   try {
-    // Test fail to set 'notestoption'
-    helpers.doEx('set notestoption=b');
+    // Test fail to set 'notestopt'
+    helpers.doEx('set notestopt=b');
     fail();
   } catch (expected) {};
   // Test setOption
-  helpers.doEx('set testoption=c')
-  eq('c', CodeMirror.Vim.getOption('testoption'));
+  helpers.doEx('set testopt=c')
+  eq('c', CodeMirror.Vim.getOption('testopt'));
+  helpers.doEx('set testopt=c')
+  eq('c', CodeMirror.Vim.getOption('testopt', cm)); //local || global
+  eq('c', CodeMirror.Vim.getOption('testopt', cm, {scope: 'local'})); // local
+  eq('c', CodeMirror.Vim.getOption('testopt', cm, {scope: 'global'})); // global
+  eq('c', CodeMirror.Vim.getOption('testopt')); // global
+  // Test setOption global
+  helpers.doEx('setg testopt=d')
+  eq('c', CodeMirror.Vim.getOption('testopt', cm));
+  eq('c', CodeMirror.Vim.getOption('testopt', cm, {scope: 'local'}));
+  eq('d', CodeMirror.Vim.getOption('testopt', cm, {scope: 'global'}));
+  eq('d', CodeMirror.Vim.getOption('testopt'));
+  // Test setOption local
+  helpers.doEx('setl testopt=e')
+  eq('e', CodeMirror.Vim.getOption('testopt', cm));
+  eq('e', CodeMirror.Vim.getOption('testopt', cm, {scope: 'local'}));
+  eq('d', CodeMirror.Vim.getOption('testopt', cm, {scope: 'global'}));
+  eq('d', CodeMirror.Vim.getOption('testopt'));
+});
+testVim('ex_set_callback', function(cm, vim, helpers) {
+  var global;
+
+  function cb(val, cm, cfg) {
+    if (val === undefined) {
+      // Getter
+      if (cm) {
+        return cm._local;
+      } else {
+        return global;
+      }
+    } else {
+      // Setter
+      if (cm) {
+        cm._local = val;
+      } else {
+        global = val;
+      }
+    }
+  }
+
+  CodeMirror.Vim.defineOption('testopt', 'a', 'string', cb);
+  // Test default value is set.
+  eq('a', CodeMirror.Vim.getOption('testopt'));
+  try {
+    // Test fail to set 'notestopt'
+    helpers.doEx('set notestopt=b');
+    fail();
+  } catch (expected) {};
+  // Test setOption (Identical to the string tests, but via callback instead)
+  helpers.doEx('set testopt=c')
+  eq('c', CodeMirror.Vim.getOption('testopt', cm)); //local || global
+  eq('c', CodeMirror.Vim.getOption('testopt', cm, {scope: 'local'})); // local
+  eq('c', CodeMirror.Vim.getOption('testopt', cm, {scope: 'global'})); // global
+  eq('c', CodeMirror.Vim.getOption('testopt')); // global
+  // Test setOption global
+  helpers.doEx('setg testopt=d')
+  eq('c', CodeMirror.Vim.getOption('testopt', cm));
+  eq('c', CodeMirror.Vim.getOption('testopt', cm, {scope: 'local'}));
+  eq('d', CodeMirror.Vim.getOption('testopt', cm, {scope: 'global'}));
+  eq('d', CodeMirror.Vim.getOption('testopt'));
+  // Test setOption local
+  helpers.doEx('setl testopt=e')
+  eq('e', CodeMirror.Vim.getOption('testopt', cm));
+  eq('e', CodeMirror.Vim.getOption('testopt', cm, {scope: 'local'}));
+  eq('d', CodeMirror.Vim.getOption('testopt', cm, {scope: 'global'}));
+  eq('d', CodeMirror.Vim.getOption('testopt'));
+})
+testVim('ex_set_filetype', function(cm, vim, helpers) {
+  CodeMirror.defineMode('test_mode', function() {
+    return {token: function(stream) {
+      stream.match(/^\s+|^\S+/);
+    }};
+  });
+  CodeMirror.defineMode('test_mode_2', function() {
+    return {token: function(stream) {
+      stream.match(/^\s+|^\S+/);
+    }};
+  });
+  // Test mode is set.
+  helpers.doEx('set filetype=test_mode');
+  eq('test_mode', cm.getMode().name);
+  // Test 'ft' alias also sets mode.
+  helpers.doEx('set ft=test_mode_2');
+  eq('test_mode_2', cm.getMode().name);
+});
+testVim('ex_set_filetype_null', function(cm, vim, helpers) {
+  CodeMirror.defineMode('test_mode', function() {
+    return {token: function(stream) {
+      stream.match(/^\s+|^\S+/);
+    }};
+  });
+  cm.setOption('mode', 'test_mode');
+  // Test mode is set to null.
+  helpers.doEx('set filetype=');
+  eq('null', cm.getMode().name);
 });
 // TODO: Reset key maps after each test.
 testVim('ex_map_key2key', function(cm, vim, helpers) {