diff --git a/lib/ace/commands/command_manager.js b/lib/ace/commands/command_manager.js
index 380611eb..af2021e5 100644
--- a/lib/ace/commands/command_manager.js
+++ b/lib/ace/commands/command_manager.js
@@ -13,7 +13,7 @@ var CommandManager = function(platform, commands) {
     this.addCommands(commands);
     
     this.setDefaultHandler("exec", function(e) {
-        e.command.exec(e.editor, e.args || {});
+        return e.command.exec(e.editor, e.args || {});
     });
 };
 
@@ -33,8 +33,8 @@ oop.inherits(CommandManager, HashHandler);
         if (editor && editor.$readOnly && !command.readOnly)
             return false;
 
-        this._emit("exec", {editor: editor, command: command, args: args});
-        return true;
+        var retvalue = this._emit("exec", {editor: editor, command: command, args: args});
+        return retvalue === false ? false : true;
     };
 
     this.toggleRecording = function() {
diff --git a/lib/ace/lib/event_emitter.js b/lib/ace/lib/event_emitter.js
index f89a8e98..98aa58c2 100644
--- a/lib/ace/lib/event_emitter.js
+++ b/lib/ace/lib/event_emitter.js
@@ -75,7 +75,7 @@ EventEmitter._dispatchEvent = function(eventName, e) {
     }
     
     if (defaultHandler && !e.defaultPrevented)
-        defaultHandler(e);
+        return defaultHandler(e);
 };
 
 EventEmitter.setDefaultHandler = function(eventName, callback) {