Ticket #7004: 7004.patch

_source/core/plugins.js

@@ -79 +79 @@
 CKEDITOR.plugins.setLang = function( pluginName, languageCode, languageEntries )
 {
         var plugin = this.get( pluginName ),
-                pluginLang = plugin.lang || ( plugin.lang = {} );
+                pluginLang = plugin.lang || ( plugin.lang = [] );
 
+        if ( CKEDITOR.tools.indexOf( pluginLang, languageCode ) == -1 )
+                pluginLang.push( languageCode );
+
         pluginLang[ languageCode ] = languageEntries;
 };