bug#6665: 24.0.50; rgrep does not work on Windows

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sun, 18 Jul 2010 22:00:16 -0600
> From: Christoph <cschol2112@googlemail.com>
> CC: 6665@debbugs.gnu.org
> 
> > If you paste all this long command line to the shell window, does the
> > program work then?  (You may need to mirror the slashes for that.)
> 
> No. I pasted it into cmd.exe and it gives the exact same error.
> 
> > Also, does the problem go away if you replace "(" with "-(" and ")"
> > with "-)"?
> 
> Same result.
> 
> > Does the problem go away if you copy the two programs to a directory
> > whose name does not include blanks and parentheses, and invoke them
> > from there?
> 
> No. The spaces are not the problem. I enclosed the path in quotes so it 
> finds the correct executable at this path (I omitted the quotes before 
> and it would only find C:\Program).

It's something with your port of Find.  My port is something I did
myself (the original GnuWin32 one was terribly slow and buggy), and it
does work, both with your command line from the shell and inside
Emacs.

I think this bug report should be closed, as it is not something Emacs
can fix.