[Bug 11474] New: winelauncher mixes up stdout & stderr

http://bugs.winehq.org/show_bug.cgi?id=11474

Summary: winelauncher mixes up stdout & stderr
           Product: Wine
           Version: CVS/GIT
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: programs
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=10617)
 --> (http://bugs.winehq.org/attachment.cgi?id=10617)
simple test case

The following line in winelauncher:

( $WINEBIN/$WINE_BIN_NAME "$@"; echo $? >$status_name ) 2>&1 | tee
"$log_name"

mixes up stdout and stderr irreversibly.  As a result, commands like:

echo some_file | cpio.exe -o -H newc > out.cpio

which would work on Windows, on wine get stderr messages merged into the
output.

I've been thinking for a while in a way to duplicate streams in bash without
mixing stdout with stderr, but couldn't find anything.

I think a C wrapper would be needed;  perhaps in wine-bin itself.  What's your
preference?