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From: Lars Ingebrigtsen <larsi@gnus.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: juri@linkov.net, 44983@debbugs.gnu.org, dgutov@yandex.ru
Subject: bug#44983: Truncate long lines of grep output
Date: Sat, 30 Apr 2022 11:36:37 +0200	[thread overview]
Message-ID: <87fslu6hga.fsf@gnus.org> (raw)
In-Reply-To: <87levm6i0i.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sat, 30 Apr 2022 11:24:29 +0200")

I've instrumented some functions to try to see what's going on.

I've set things up so that grep lines that are longer than 200 chars are
invisible starting at the 200th character.  While the grep is running,
`jit-lock-fontify-now' is called repeatedly and takes longer time each
time, but with the same region:

Fontifying *grep* 392-1892
Fontifying *grep* 392-1892
Fontifying *grep* 392-1892

392 is the start of the line, and 1892 is in the invisible portion of
the line.  That's 1500 characters, so it should be fast -- but perhaps
it's extending it to the end of the line anyway?

But before I start trying to debug that, I'm wondering: Why is
`jit-lock-fontify-now' called at all here?  There have been no display
changes -- the text was inserted, but as invisible text, so no font
locking should be necessary.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no






  reply	other threads:[~2022-04-30  9:36 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-01  8:45 bug#44983: Truncate long lines of grep output Juri Linkov
2020-12-01 15:02 ` Dmitry Gutov
2020-12-01 16:09   ` Eli Zaretskii
2020-12-01 16:46     ` Andreas Schwab
2020-12-01 18:26       ` Eli Zaretskii
2020-12-01 20:35     ` Juri Linkov
2020-12-02  3:21       ` Eli Zaretskii
2020-12-02  9:35         ` Juri Linkov
2020-12-02 10:28           ` Eli Zaretskii
2020-12-02 20:53             ` Juri Linkov
2020-12-03 14:47               ` Eli Zaretskii
2020-12-03 16:30                 ` Rudolf Schlatte
2020-12-03 21:17                 ` Juri Linkov
2020-12-05 19:47                   ` Juri Linkov
2020-12-06 20:39                     ` Juri Linkov
2020-12-06 21:37                       ` Dmitry Gutov
2020-12-06 21:54                         ` Juri Linkov
2020-12-07  2:41                           ` Dmitry Gutov
2020-12-08 19:41                             ` Juri Linkov
2020-12-09  3:00                               ` Dmitry Gutov
2020-12-09 19:17                                 ` Juri Linkov
2020-12-09 20:06                                   ` Dmitry Gutov
2020-12-10  8:18                                     ` Juri Linkov
2020-12-10 20:48                                       ` Dmitry Gutov
2020-12-09 21:43                                   ` Jean Louis
2020-12-10  8:06                                     ` Juri Linkov
2020-12-10 10:08                                       ` Jean Louis
2020-12-12 20:42                                         ` Juri Linkov
2020-12-13 10:57                                           ` Jean Louis
2020-12-13 15:11                                           ` Eli Zaretskii
2020-12-13 15:37                                             ` Jean Louis
2020-12-13 20:17                                             ` Juri Linkov
2020-12-14 16:15                                               ` Eli Zaretskii
2020-12-14 20:09                                                 ` Dmitry Gutov
2020-12-24 20:33                                   ` Juri Linkov
2020-12-24 23:38                                     ` Dmitry Gutov
2020-12-08  5:35                         ` Richard Stallman
2020-12-08 19:15                           ` Dmitry Gutov
2022-04-29 11:39           ` Lars Ingebrigtsen
2022-04-29 12:22             ` Eli Zaretskii
2022-04-29 12:41               ` Lars Ingebrigtsen
2022-04-29 13:08                 ` Eli Zaretskii
2022-04-30  9:24                   ` Lars Ingebrigtsen
2022-04-30  9:36                     ` Lars Ingebrigtsen [this message]
2022-04-30 10:15                       ` Eli Zaretskii
2022-04-30 11:04                         ` Lars Ingebrigtsen
2022-04-29 16:02             ` Dmitry Gutov
2022-04-30  9:40               ` Lars Ingebrigtsen
2022-04-30  9:56                 ` Lars Ingebrigtsen
2022-04-30 10:09                   ` Eli Zaretskii
2022-04-30 10:59                     ` Lars Ingebrigtsen
2022-04-30 11:02                     ` Lars Ingebrigtsen
2022-04-30 11:12                       ` Eli Zaretskii
2022-04-29 17:15             ` Juri Linkov
2022-04-30  0:27               ` Dmitry Gutov
2022-05-01 17:14                 ` Juri Linkov
2020-12-01 20:34   ` Juri Linkov

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