https://bugs.winehq.org/show_bug.cgi?id=33392
--- Comment #15 from Nikolay Sivov bunglehead@gmail.com --- I believe this should work now. It was implemented in RtlFormatMessage(), 5bb9f86dbe6cba002b3cd3b71c73f52a97ce6a60. Later kernelbase/kernel32 were switched to it with 7b01281745e520397ccabf1ab315095070a0772d. Tests are also present, this is probably safe to close.