[Bug 37195] cmd does not accept wild cards

https://bugs.winehq.org/show_bug.cgi?id=37195

--- Comment #2 from Jason Edmeades  ---
All releases... no need for logs, as the sample batch pgm shows the issue.

The issue is simply in programs/cmd/builtins.c, WCMD_if, these lines:

else if (!lstrcmpiW (condition, existW)) {
     test = (GetFileAttributesW(WCMD_parameter(p, 1+negate, NULL, FALSE,
FALSE))
              != INVALID_FILE_ATTRIBUTES);
     WCMD_parameter(p, 2+negate, &command, FALSE, FALSE);
}

so we take the parameter to the 'if' and type to find out about it. We probably
should do something like (not even compiled!!)

else if (!lstrcmpiW (condition, existW)) {
  WIN32_FIND_DATAW fd;
  HANDLE          hff;
  hff = FindFirstFileW(WCMD_parameter(p, 1+negate, NULL, FALSE, FALSE), &fd);
  test = (hff != INVALID_HANDLE_VALUE)
  FindClose(hff);
  WCMD_parameter(p, 2+negate, &command, FALSE, FALSE);
}

Feel free to add a test, try this and submit - I dont have Linux to play with
at the moment but the problem looks 'obvious'.