[Bug 13819] New: Wrong codepage used for console output

http://bugs.winehq.org/show_bug.cgi?id=13819

Summary: Wrong codepage used for console output
           Product: Wine
           Version: CVS/GIT
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: kernel32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

To reproduce this problem, run the following command (that's assuming you have
a UTF-8 xterm, otherwise replace UTF-8 with ISO-8859-1 or the appropriate
encoding):

LANG=fr_FR.UTF-8 ./programs/start/start /help

You will notice that all the accentuated characters are missing. This is
because start.c converts the Unicode resource string to the
GetConsoleOutputCP() encoding in the output() function. I think that's correct
but GetConsoleOutputCP() systematically return "850" as the codepage, even if I
change the [Nls\Codepage]/OEM value in the registry.

One hack to fix this is to replace the GetConsoleOutputCP() call with CP_UNIXCP
but I guess that would be wrong in the case where we're running in the Wine
console.

So I think that when the console is a regular Unix terminal
GetConsoleOutputCP() should return the CP_UNIXCP codepage.