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From: Juri Linkov <juri@linkov.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 44983@debbugs.gnu.org, Dmitry Gutov <dgutov@yandex.ru>
Subject: bug#44983: Truncate long lines of grep output
Date: Tue, 01 Dec 2020 22:35:55 +0200	[thread overview]
Message-ID: <87sg8p5kw0.fsf@mail.linkov.net> (raw)
In-Reply-To: <83ft4pik35.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 01 Dec 2020 18:09:50 +0200")

>> Perhaps (setq truncate-lines t) could help in that case?
>
> Not necessarily, because the truncated parts are still in the buffer,
> and the display code which is slow in that case basically moves
> through the buffer one character at a time in many cases.  Only some
> specific scenarios (read: a small number of commands) can jump to the
> next physical line disregarding the truncated parts.

It's very strange that after adding the text property 'display "[…]"
on a very long line, motion commands are still very slow in that buffer.

Could you help to understand why hiding long regions
doesn't help to improve performance?





  parent reply	other threads:[~2020-12-01 20:35 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 [this message]
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
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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