add event.getModifierString to convert hash into readable string

lib/ace/keyboard/vim.js

@@ -145,8 +145,8 @@ exports.handler = {
             if (hashId == -1 || hashId == 1 || hashId === 0 && key.length > 1) {
                 if (cmds.inputBuffer.idle && startCommands[key])
                     return startCommands[key];
-                cmds.inputBuffer.push(editor, key);
-                return {command: "null", passEvent: false}; 
+                var isHandled = cmds.inputBuffer.push(editor, key);
+                return {command: "null", passEvent: !isHandled}; 
             } // if no modifier || shift: wait for input.
             else if (key.length == 1 && (hashId === 0 || hashId == 4)) {
                 return {command: "null", passEvent: true};

lib/ace/lib/event.js

@@ -217,6 +217,10 @@ var getModifierHash = useragent.isMac && useragent.isOpera && !("KeyboardEvent"
         return 0 | (e.ctrlKey ? 1 : 0) | (e.altKey ? 2 : 0) | (e.shiftKey ? 4 : 0) | (e.metaKey ? 8 : 0);
     };
 
+exports.getModifierString = function(e) {
+    return keys.KEY_MODS[getModifierHash(e)];
+};
+
 function normalizeCommandKeys(callback, e, keyCode) {
     var hashId = getModifierHash(e);
 

lib/ace/lib/keys.js

@@ -133,6 +133,15 @@ var Keys = (function() {
     
     // workaround for firefox bug
     ret[173] = '-';
+    
+    (function() {
+        var mods = ["cmd", "ctrl", "alt", "shift"];
+        for (var i = Math.pow(2, mods.length); i--;) {
+            ret.KEY_MODS[i] = mods.filter(function(x) {
+                return i & ret.KEY_MODS[x];
+            }).join("-") + "-";
+        }
+    })();
 
     return ret;
 })();
@@ -140,6 +149,6 @@ oop.mixin(exports, Keys);
 
 exports.keyCodeToString = function(keyCode) {
     return (Keys[keyCode] || String.fromCharCode(keyCode)).toLowerCase();
-}
+};
 
 });