bug#19776: 25.0.50; HTML rendering is very slow

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Stefan Kangas <stefan@marxist.se>,  rms@gnu.org,  19776@debbugs.gnu.org
> Date: Sun, 24 Oct 2021 14:43:41 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Did someone consider using atimers for this purpose?  See atimer.c.
> 
> Oh, that looks promising.  I guess we can't run Lisp code from an
> atimer?  But then again, we wouldn't need to -- with a thing like
> 
> (with-delayed-message 2 "Rendering HTML..."
>   (do-the-hthml-rendering))
> 
> the message would be precomposed, so we'd just need to display it in the
> echo area?

Yes.  And Fmessage is implemented in C anyway.