[Bug 9583] New: CompareStringW gives incorrect result for some wide strings

http://bugs.winehq.org/show_bug.cgi?id=9583

Summary: CompareStringW gives incorrect result for some wide
                    strings
           Product: Wine
           Version: CVS/GIT
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: wine-kernel
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

It seems like CompareStringW does not work correctly, when using wide/unicode
strings. I first discovered this when I saw that listbox controls sorted
swedish characters (say, LATIN SMALL LETTER A WITH RING ABOVE) side by side
with the base character (LATIN SMALL LETTER A). An example is
http://www.cendio.se/~astrand/wine/40-listbox-sort/list.exe.

The cause seems to be that CompareStringW gives the wrong result. I've created
the small test example
http://www.cendio.se/~astrand/wine/40-listbox-sort/comparestring.exe, with
source available in the same directory. On Windows, the result is that the
string "äpple" is greater than "orange", which is correct. With the latest
Wine CVS version, the result is that "äpple" is lesser than "orange", which is
wrong.