Re: How can I find changes before saving a file?

[Ehud Karni]

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On 12 Feb 2003 15:14:12 +0100, Roland Winkler 
<Roland.Winkler@physik.uni-erlangen.de> wrote:
>
> kai.grossjohann@uni-duisburg.de (Kai Großjohann) writes:
>
> > > If I have edited a file and want to see what changes I have made, how
> > > can I do that?
> >
> > You could compare the file with its backup.  But that only works
> > after saving, of course.
>
> You could temporarily rename the modified buffer, load the file once
> more into emacs and start an ediff session.

I think renaming the buffer wouldn't do, Emacs still remembers the DISK
file name (even after renaming), visiting the file again will go back
to the same buffer.

You could do M-x shell-command cat <file-name> and compare the
current buffer with "*Shell Command Output*".

Ehud.


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