Re: undo-information kept for *occur*

[Kevin Rodgers]

Matzi Kratzi wrote:
> GNU Emacs 22.0.94.1 <http://22.0.94.1> (i386-mingw-nt5.0.2195) of 
> 2007-02-24 on LENNART-69DE564
> (Lennart's unpatched version)
>
> I use "occur" on big (> 100 MB) text-files quite often. While doing the 
> very nice filtering, emacs regularly, but not always, output a message 
> about the undo-information that prompts me to give it a yes or no 
> aswear. I cannot exactly remember the wording, but yes means "yes, go 
> along and drop the ability to undo the changes in the *occur* buffer".
>
> Could this kind of behaviour be avoided? I can see no occasion when I 
> would like to undo in an *occur*-buffer.

Then you should:

(add-hook 'occur-mode-hook (lambda () (setq buffer-undo-list t)))

> I have been using the cvs-versions for quite some time and this is not new.

--
Kevin Rodgers
Denver, Colorado, USA