Urs Thuermann <urs@isnogud.escape.de> writes:

> michael@cadilhac.name (Michaël Cadilhac) writes:
>
>> I think what you want is 
>> M-x diff-buffer-with-file RET RET
>
> It seems my Emacs 20.7 compiled from the sources and Emacs 21 on
> Debian GNU/Linux don't know this.  Is this something new in Emacs 22
> or do I have to load some Elisp file to be able to use this function?

It has been added on 2002-09-01 by RMS, according to the ChangeLog.

You can try to

1) Use the implementation of
   http://cvs.savannah.gnu.org/viewcvs/emacs/emacs/lisp/files.el?view=markup
2) Use Emacs 22 (Best choice ;-))

> I didn't get your answer in this newsgroup from my neesfeed.

I've just changed my mail address, and help-gnu-emacs didn't know me
when I sent this mail. It should be fixed now, thanks :-)

-- 
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 |      Michaël `Micha' Cadilhac   |  Un certain Blaise Pascal              |
 |         Epita/LRDE Promo 2007   |    etc... etc...                       |
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