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Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%

From: Eli Zaretskii
Subject: Re: bug-reference-prog-mode slows down CC Mode's scrolling by ~7%
Date: Thu, 02 Sep 2021 09:26:08 +0300

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: emacs-devel@gnu.org
> Date: Wed, 01 Sep 2021 16:59:02 -0400
> > However, this mechanism is rendered ineffective if a second function is
> > add-hook'd onto jit-lock-functions.  Maybe this could be fixed, though
> > it looks difficult.
> I think we can "easily" handle this specific case if the
> `bug-reference-prog-mode` function is added to the end of the hook
> rather than to its beginning and use a patch along the lines of the
> one below.

Thanks, but I think we want a comment there explaining why we do this
and mentioning the order of the functions.

Also, it isn't clear to me whether this will work with more than 2
functions, because the order of the functions is not completely
controlled by a single Lisp program.

> I don't know if it would make any difference to the 7% figure.

I'm sure Alan will tell us.

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