Re: Question about memory usage

[Michał Kondraciuk]

On 04/03/2018 08:22 PM, Eli Zaretskii wrote:
> > From: Michał Kondraciuk <k.michal@zoho.com>
> > Cc: help-gnu-emacs@gnu.org
> > Date: Tue, 3 Apr 2018 19:57:34 +0200
> >
> > > To answer your question: yes, I think this is expected, given that you
> > > set buffer-undo-list to nil (what is the purpose of that, btw?).
> >
> > No purpose, but some external packages display information in a way
> > similar to this sexp, where undo information is also recorded (needlessly):
>
> To disable undo, you should bind buffer-undo-list to t, not to nil.
> And with-temp-buffer already does that, because temporary buffers have
> their undo disabled by default.

I know that, I meant it's common to see code like this in some packages, 
especially when the buffer is actually displayed.

> Did you try not setting buffer-undo-list at all?  What did you see
> then?

Emacs behaves as expected, i.e. memory usage is ~20MB all the time.