http://bugs.winehq.org/show_bug.cgi?id=10767
--- Comment #40 from Rafał Mużyło galtgendo@o2.pl 2012-07-16 12:10:40 CDT --- (In reply to comment #39)
*** Bug 31191 has been marked as a duplicate of this bug. ***
To the hopeful one, whose bug has been marked as a duplicate of this one, that has just sent a patch: abandon all hope.
http://blogs.msdn.com/b/michkap/archive/2005/02/05/367666.aspx
This is why I've tried ICU in the past, but just couldn't make it.
So, your patch may make things better in some of the cases, but as long as current approach is upheld, it won't be a real fix.