http://bugs.winehq.org/show_bug.cgi?id=19182
--- Comment #59 from Sylvain Petreolle spetreolle@yahoo.fr 2012-08-07 07:48:08 CDT --- (In reply to comment #58)
But if you are seeing cases where plain Wine really is adding mimetypes even though you have the override in .bashrc, please post exact steps to reproduce the problem in bug 20612. IMO, the current problem with that bug is that the only examples mentioned involve winetricks, and that was a winetricks problem.
The last comment in bug 20612 involves an user with the override and no winetricks.