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


From: Eli Zaretskii
Subject: Re: Major modes using `widen' is a good, even essential, programming practice.
Date: Sun, 07 Aug 2022 21:59:22 +0300

> From: Óscar Fuentes <ofv@wanadoo.es>
> Date: Sun, 07 Aug 2022 20:49:03 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> > Yes, and that's SLOOOWWWW!
> >> 
> >> It's not slow on files of reasonable size. E.g. even if we take xdisp.c 
> >> (the file I've seen referred to in complaints on CC Mode's speed),
> >> 
> >>    (benchmark 1 '(save-excursion (parse-partial-sexp (point-min) 
> >> (point-max))))
> >> 
> >> reports 20-50 ms on my machine.
> >
> > It takes 0.5 sec here.
> 
> Is that the unoptimized build you usually work with?

Yes.



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