Re: Removing redisplay-dont-pause

[Eli Zaretskii <eliz@gnu.org>]

> From: Ihor Radchenko <yantar92@posteo.net>
> Cc: mattias.engdegard@gmail.com, emacs-devel@gnu.org,
>  gerd.moellmann@gmail.com, monnier@iro.umontreal.ca
> Date: Sun, 01 Dec 2024 14:49:56 +0000
> 
> >> The problem with redisplay hangs keeps surfacing again and again, so I
> >> do expect that a number of people will try to use it as soon as they
> >> learn that such variable exists.
> >
> > The hangs you have in mind cannot be helped by this variable.
> 
> I was replying about your example with scrolling. I also tested setting
> this variable when typing in an Org buffer with many large invisible
> regions, and setting the variable does help typing speed.

I imagined that.

Most of the time spent by redisplay in those cases is in the part that
isn't interrupted when this variable is nil, because it is consulted
when all the invisible regions were already scanned.  I don't
understand how it could help typing speed, unless typing in those
cases has dramatic effect on what is shown on the glass (as opposed to
what typing usually does: affects at most one or two screen lines).