Languages

I thought about this issue some more and just added a comment to bug tracker.

Basically, I am thinking that it might be even simpler, for both users and developers, if the _local folders were not considered by Moodle as true language packs but extensions or whatever you want to call them.

Functionally, Moodle would check automatically whether such a _local file exists (I mean a file in _local folder for current language) and give it priority when resolving a string request.

I think this would localize the code changes to the function resolving the strings only. The only other place to deal with it would be web interface for editing language strings (but initially this could be even left out, requiring direct editing of files).