bug#767: 23.0.60; compilation-start gives bad default-directory

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Sun, 07 Sep 2008 15:34:10 -0400
> Cc: 767@emacsbugs.donarmstrong.com, emacs-pretest-bug@gnu.org
> 
> > If on w32 default-directory is something like c:\top\sub then the
> 
> Then it's a bug.  C-h v default-directory says:
> 
>    Name of default directory of current buffer.  Should end with slash.
>    To interactively change the default directory, use command `cd'.
> 
> So if it doesn't end in slash, we have a problem.

It does end in a slash on my machine (also on MS-Windows).

I think the original problem is that it uses backslashes instead of
forward slashes.