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Subject: Re: Diff on Emacs
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Jasen <xx@yy.zz> writes:
> There are many diff*.el and ediff*.el files in ../lisp/ directory so
> isn't diff a standard built-in function for emacs?

To compare two buffers you can use Emacs function `compare-windows'
from compare-w.el which now implements a simple diff algorithm.
Instead of line by line output of the 'diff' program, `compare-windows'
provides differences character by character which produces more
fine-grained results than the 'diff' program.

-- 
http://www.jurta.org/emacs/