GNU bug report logs - #71644
30.0.50; Severe slowdown in larger files with markers beginning in emacs 29+

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>, Ihor Radchenko <yantar92 <at> posteo.net>
Cc: Mitchell <mitchellahren <at> gmail.com>, 71644 <at> debbugs.gnu.org
Subject: bug#71644: 30.0.50; Severe slowdown in larger files with markers beginning in emacs 29+
Date: Tue, 25 Jun 2024 07:00:38 +0300

On June 25, 2024 6:07:32 AM GMT+03:00, Stefan Monnier <monnier <at> iro.umontreal.ca> wrote:
> One other thing I notice: If I use Emacs-29 but with Org-9.5.5 (i.e., the
> version included in Emacs-28.2) the recipe doesn't show the slowdown.
> 
> There's still a good chance that the slow behavior is due to
> chars<->bytes conversion (there's no doubt that this code's performance
> can be quite poor), but I suspect the reason for the change of behavior
> between Emacs-28 and Emacs-29 lies in Org rather than in Emacs's C code.
> If someone more familiar with the changes that occurred in Org around
> that time could try and track down the specific change that triggers the
> problem, that would be appreciated.
> 
> 
>         Stefan
> 
> 

Yes, I think it is very important to find out which changes in Org triggered this issue in Emacs 29.

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