http://bugs.winehq.org/show_bug.cgi?id=26632
--- Comment #5 from Nikolay Sivov bunglehead@gmail.com 2011-04-02 08:47:17 CDT --- AFAIK wine's unicode tables are generated directly from unicode.org data, and I'm sure it already was a request to customize that (case Windows does some things other way). I don't remember why it was rejected - probably because MS tweaks its implementation from release to release and we want to rely on standard data.
Somebody experienced in that area could help here. Dmitry?