Currently, the language fallback does only work for the messages of the language files. It would be nice, if it could also be used to search for customized messages.

Example (see url):
On dewiki, a user selects de-ch as user language (which falls back to de). If a certain message is not defined in MessagesDe-ch.php, MW shows the message from MessagesDe.php, while it would be better to look for a customized message in MediaWiki namespace first.

So the lookup order should be

• DB message of userlang (MediaWiki:foobar/de-ch)
• message file of userlang (MessagesDe-ch.php)
• DB message of fallback lang (MediaWiki:foobar/de rsp. MediaWiki:foobar if identical to content language)
• message file of fallback lang (MessagesDe.php)

Version: 1.15.x
Severity: enhancement
URL: http://de.wikipedia.org/w/index.php?title=Wikipedia:Fragen_zur_Wikipedia&oldid=56323188#de-at_und_de-ch