[Bug 21047] cmd does not handle FOR /F %%a in ('command') properly

http://bugs.winehq.org/show_bug.cgi?id=21047

Dan Kegel  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|cmd does not handle for %%a |cmd does not handle FOR /F
                   |in ('command')              |%%a in ('command') properly

--- Comment #1 from Dan Kegel   2010-01-06 15:12:10 ---
Simple test: a batch file foo.cmd containing
  for /f %%a in ('echo a b c') do echo %%a
should output
  a

That's supposed to work in wine already, but doesn't seem to.
http://source.winehq.org/source/programs/cmd/builtins.c#L888

Here's what one sees with WINEDEBUG=+cmd,+process wine cmd /c foo.cmd
...
trace:cmd:WCMD_for Processing for filespec from item 1 'L"'echo"'
trace:cmd:WCMD_execute command on entry:L"'echo a b c" ((nil)), with
'(null)'='(null)'
trace:cmd:WCMD_execute Redirect 1 to 'L"echo"' (0x44)
trace:cmd:WCMD_execute Command: 'L"'echo a b c"'
trace:cmd:WCMD_execute param1: L"'echo", param2: L"a"
trace:cmd:WCMD_run_program Searching in
'L".;C:\windows\system32;C:\windows"' for 'L"'echo"'
trace:cmd:WCMD_run_program Found as L"Z:\data\dkegel\wine-git\'echo.*"
trace:cmd:WCMD_run_program Found as L"C:\windows\system32\'echo.*"
trace:cmd:WCMD_run_program ASSUMING INTERNAL
trace:process:CreateProcessW app (null) cmdline L"'echo a b c"
...
trace:process:find_exe_file Trying built-in exe L"C:\windows\system32\'echo
a b c.exe"
File not found

See also http://ss64.com/nt/for_cmd.html
and http://ss64.com/nt/for_f.html