Last modified: 2012-08-06 19:56:59 UTC
It would be useful to have a special page which lists those files (conflict between local wiki and a shared repository)
I'd say this needs bug 15690 fixed first, you can't do mass-lookups against foreign repos over the API right now. You'd have to check every local image against every sha1 hash on a foreign wiki.
Well, but since MediaWiki:Shareduploadconflict is used on that pages...coudn't you just say: List the usages of that mw-msg?
[[Special:WhatLinksHere/MediaWiki:Shareduploadconflict]] ^ Nothing does. Usages of system messages aren't stored in the various links tables.
*** Bug 14888 has been marked as a duplicate of this bug. ***