Re: Ediff not executing, displays error

> Date: Mon, 21 Apr 2014 09:23:36 +0530
> From: Ankush Mishra <[email protected]>
> CC: [email protected]
> 
> On 20-04-2014 19:25, Eli Zaretskii wrote:
> > In which directory do you have your diff.exe program?  is that
> > directory on PATH?
> Hey, thanks for the suggestion, it turns out that my "diff.exe" was 
> missing in the first place. So, I am thinking of using using Cygwin for 
> diff. After getting "diff" should I add say "C:\Cygwin\bin\" to the path?

Yes.  But I'd recommend to use native diff.exe, not the Cygwin one, to
avoid the need for yet another directory on PATH, and some potential
subtle compatibility problems between a natively built Emacs and
Cygwin programs.  You can find a native port of Diffutils on one of
these 2 places:

  http://adoxa.altervista.org/diffutils/
  http://gnuwin32.sourceforge.net/packages/diffutils.htm

Just unzip one of those into some directory already on your PATH, and
that's it.