Revert adobe/brackets "Add cut/copy/paste to the context menu" which

relies on document.execCommand() which doesn't work well (esp. for paste)
in browsers.  See adobe#12674.

This reverts commit d93ccc5.

src/command/DefaultMenus.js

@@ -253,12 +253,6 @@ define(function (require, exports, module) {
         // editor_cmenu.addMenuItem(Commands.NAVIGATE_JUMPTO_DEFINITION);
         editor_cmenu.addMenuItem(Commands.TOGGLE_QUICK_EDIT);
         editor_cmenu.addMenuItem(Commands.TOGGLE_QUICK_DOCS);
-        editor_cmenu.addMenuDivider();
-        editor_cmenu.addMenuItem(Commands.EDIT_CUT);
-        editor_cmenu.addMenuItem(Commands.EDIT_COPY);
-        editor_cmenu.addMenuItem(Commands.EDIT_PASTE);
-
-        editor_cmenu.addMenuDivider();
         editor_cmenu.addMenuItem(Commands.EDIT_SELECT_ALL);
 
         var inline_editor_cmenu = Menus.registerContextMenu(Menus.ContextMenuIds.INLINE_EDITOR_MENU);
@@ -287,13 +281,17 @@ define(function (require, exports, module) {
                     inlineWidget = EditorManager.getFocusedInlineWidget();
 
                 if (editor) {
-                    //if (!editor.hasSelection()) {
+                    // If there's just an insertion point select the word token at the cursor pos so
+                    // it's more clear what the context menu applies to.
+                    if (!editor.hasSelection()) {
+                        editor.selectWordAt(editor.getCursorPos());
+
                         // Prevent menu from overlapping text by moving it down a little
                         // Temporarily backout this change for now to help mitigate issue #1111,
                         // which only happens if mouse is not over context menu. Better fix
                         // requires change to bootstrap, which is too risky for now.
                         //e.pageY += 6;
-                    //}
+                    }
 
                     // Inline text editors have a different context menu (safe to assume it's not some other
                     // type of inline widget since we already know an Editor has focus)

src/editor/EditorCommandHandlers.js

@@ -1113,7 +1113,17 @@ define(function (require, exports, module) {
         return handleUndoRedo("redo");
     }
 
-    function _handleSelectAll() {
+    /**
+     * Special command handler that just ignores the command. This is used for Cut, Copy, and Paste.
+     * These menu items are handled natively, but need to be registered in our JavaScript code so the
+     * menu items can be created.
+     */
+    function ignoreCommand() {
+        // Do nothing. The shell will call the native handler for the command.
+        return (new $.Deferred()).reject().promise();
+    }
+
+	function _handleSelectAll() {
         var result = new $.Deferred(),
             editor = EditorManager.getFocusedEditor();
 
@@ -1127,19 +1137,6 @@ define(function (require, exports, module) {
         return result.promise();
     }
 
-    function _execCommand(cmd) {
-        window.document.execCommand(cmd);
-    }
-    function _execCommandCut() {
-        _execCommand("cut");
-    }
-    function _execCommandCopy() {
-        _execCommand("copy");
-    }
-    function _execCommandPaste() {
-        _execCommand("paste");
-    }
-
     // Register commands
     CommandManager.register(Strings.CMD_INDENT,                 Commands.EDIT_INDENT,                 indentText);
     CommandManager.register(Strings.CMD_UNINDENT,               Commands.EDIT_UNINDENT,               unindentText);
@@ -1158,8 +1155,8 @@ define(function (require, exports, module) {
 
     CommandManager.register(Strings.CMD_UNDO,                   Commands.EDIT_UNDO,                   handleUndo);
     CommandManager.register(Strings.CMD_REDO,                   Commands.EDIT_REDO,                   handleRedo);
-    CommandManager.register(Strings.CMD_CUT,                    Commands.EDIT_CUT,                    _execCommandCut);
-    CommandManager.register(Strings.CMD_COPY,                   Commands.EDIT_COPY,                   _execCommandCopy);
-    CommandManager.register(Strings.CMD_PASTE,                  Commands.EDIT_PASTE,                  _execCommandPaste);
+    CommandManager.register(Strings.CMD_CUT,                    Commands.EDIT_CUT,                    ignoreCommand);
+    CommandManager.register(Strings.CMD_COPY,                   Commands.EDIT_COPY,                   ignoreCommand);
+    CommandManager.register(Strings.CMD_PASTE,                  Commands.EDIT_PASTE,                  ignoreCommand);
     CommandManager.register(Strings.CMD_SELECT_ALL,             Commands.EDIT_SELECT_ALL,             _handleSelectAll);
 });