[Bug 32073] New: Some chars are mapped as dead key

http://bugs.winehq.org/show_bug.cgi?id=32073

Bug #: 32073
           Summary: Some chars are mapped as dead key
           Product: Wine
           Version: 1.5.16
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winex11.drv
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

When I use TapTouche, a typing training software, it warns me my keyboard is
mis-configured and disables automatically some exercices.

I installed it in an XP VM, compared with wine and found that exercices using
the following chars were not available in wine : é ç à ù â ê û î ô É È Ç À Ù Â
Ê Û Î Ô

Thanks to +relay and +key,+keyboard, I found that
VkKeyScan(0xe7) returns -1 in wine, 0x39 in windows
VkKeyScan(0xe8) returns -1 in wine, 0x37 in windows

I have a french keyboard and as you may have guessed, the 7 key contains 'è'
and '`' while the 9 key contains 'ç' and '^'.

For the following, I only focus on the 7 key (keycode 16) as it's the same
issue for the 9 key.

I played with XkbKeycodeToKeysym(display, 16, 0, [0-4]) and it returns
0xe8 'è' / 0x37 '7' / 0x60 '`' / 0xac6 '⅞'.
showing my keyboard is correctly mapped/configured so the issue is on the wine
side.

I looked at the source code and found the issue was in the loop at
http://source.winehq.org/git/wine.git/blob/HEAD:/dlls/winex11.drv/keyboard.c...

More precisely, line 1728, keycode_to_keysym returns 0xe8 for i=0,
XkbTranslateKeySym fails and as 0xe8 > 0x7F (the lastest ascii char), ckey[i]
is 0.

There is an explicit FIXME but as I don't fully understand it, I prefer filing
a bug.

If you need any info, testcase or log, just let me know.