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bug#44983: Truncate long lines of grep output
From: |
Lars Ingebrigtsen |
Subject: |
bug#44983: Truncate long lines of grep output |
Date: |
Sat, 30 Apr 2022 11:24:29 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>> > If that doesn't help either, I suggest to profile the code, because it
>> > could be the slow display is due to something else.
>>
>> Hm, yes... even if I disable font-lock-mode, it's still slow.
>
> Then I think a profile should tell something interesting.
Turns out to be font lock anyway:
9152 88% - redisplay_internal (C function)
9148 88% - jit-lock-function
9148 88% - jit-lock-fontify-now
9148 88% - jit-lock--run-functions
9144 87% - run-hook-wrapped
9144 87% - #<compiled -0x1568eefe49e247c3>
9144 87% - font-lock-fontify-region
9144 87% - font-lock-default-fontify-region
9144 87% font-lock-fontify-keywords-region
Apparently disabling font-lock-mode in the *grep* buffer wasn't
sufficient to make it go away for some reason or other. Disabling
global-font-lock-mode makes the problem go away. And using invisible
text instead of a display property makes no difference -- font-lock
seems to really want to do font locking on ever-growing lines that are
inserted into the buffer by the process.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
bug#44983: Truncate long lines of grep output, Dmitry Gutov, 2022/04/29
- bug#44983: Truncate long lines of grep output, Lars Ingebrigtsen, 2022/04/30
- bug#44983: Truncate long lines of grep output, Lars Ingebrigtsen, 2022/04/30
- bug#44983: Truncate long lines of grep output, Eli Zaretskii, 2022/04/30
- bug#44983: Truncate long lines of grep output, Lars Ingebrigtsen, 2022/04/30
- bug#44983: Truncate long lines of grep output, Lars Ingebrigtsen, 2022/04/30
- bug#44983: Truncate long lines of grep output, Eli Zaretskii, 2022/04/30