Re: Major modes using `widen' is a good, even essential, programming practice.

[Eli Zaretskii]

> Date: Sun, 7 Aug 2022 21:05:44 +0300
> Cc: acm@muc.de, gregory@heytings.org, emacs-devel@gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> 
> >> reports 20-50 ms on my machine.
> > It takes 0.5 sec here.
> 
> Interesting. That would mean that scrolling to the end of xdisp.c will 
> at least take this long the first time around.
> 
> The more than 10x difference in performance is weird, though. Perhaps 
> you have any ideas why parse-partial-sexp's implementation might behave 
> poorly on your un-optimized build? Some tweak in the code might make a 
> lot of difference.

I hope Stefan could do something about it.