From: Eli Zaretskii <eliz@gnu.org>
To: Ryan B <public@ryanb.org>
Cc: emacs-devel@gnu.org
Subject: Re: Making font-lock handle long lines better
Date: Fri, 10 Feb 2017 18:24:48 +0200 [thread overview]
Message-ID: <83wpcy2eun.fsf@gnu.org> (raw)
In-Reply-To: <CA+caGh_JN9FRi71VjUTwvYBKKygG-KuGGoe3GBgjthPRh00nRg@mail.gmail.com> (message from Ryan B on Fri, 10 Feb 2017 07:44:15 -0800)
> From: Ryan B <public@ryanb.org>
> Date: Fri, 10 Feb 2017 07:44:15 -0800
>
> hi all! it seems like it's been a known issue for a while that font-lock is slow on very long lines. i've tried lots of
> optimizations - jit-lock/lazy-lock, font-lock-maximum-decoration, etc. - but even on modern hardware,
> fontifying still hangs my emacs for 5-10s on long lines, e.g. 10k-20k characters, whenever they appear.
>
> i'm thinking of adding an opt-in line length limit to font-lock-mode, after which it would stop fontifying, evaluating
> regexps, etc. within each line. i'd love to hear opinions on whether that makes sense, and whether you might
> consider accepting it into trunk.
Please file a bug report by sending this information using
report-emacs-bug. If you can attach to your report a minimal test
case that exhibits the problematic behavior, it will be appreciated.
Thanks.
next prev parent reply other threads:[~2017-02-10 16:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-10 15:44 Making font-lock handle long lines better Ryan B
2017-02-10 15:57 ` joakim
2017-02-10 16:24 ` Eli Zaretskii [this message]
2017-02-11 20:10 ` Wilfred Hughes
2017-02-11 20:28 ` Eli Zaretskii
2017-02-11 23:06 ` Anders Lindgren
2018-05-13 19:44 ` Ryan B
2018-05-15 0:05 ` Noam Postavsky
2018-05-15 8:08 ` Jostein Kjønigsen
2018-05-15 16:50 ` Eli Zaretskii
2018-05-15 18:32 ` Stefan Monnier
2017-02-11 22:06 ` Ryan B
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