If you don't want the Cygwin baggage, diff is also part of unxutils.
You can get it from http://unxutils.sourceforge.net/

-Mike

> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of Tachyon
> Sent: Monday, December 18, 2006 9:55 AM
> 
> Thought about installing Cygwin and using diff?
> 
> Mike Hord wrote:
> > Does anyone know a good free file compare utility for ASCII files?
> >
> > The feature that I really need is a specifiable comment character-
> > i.e., "lines that start with ' should be excluded from comparison
> > until a new line is reached".  I'm recommenting and refactoring
> > old code, and I need a way to see what's changed in type 1
> > between versions A and B so that I can upgrade types 2 and 3
> > from their current version to their next version.
> >
> > What a pain.
> >
> > Mike H.
> >
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