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From: Eli Zaretskii <eliz@gnu.org>
To: "João Távora" <joaotavora@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: Colorful line numbers
Date: Fri, 22 Jul 2022 14:00:23 +0300	[thread overview]
Message-ID: <83ilnpl8e0.fsf@gnu.org> (raw)
In-Reply-To: <87leslpow2.fsf@gmail.com> (message from João Távora on Fri, 22 Jul 2022 08:50:21 +0100)

> From: João Távora <joaotavora@gmail.com>
> Date: Fri, 22 Jul 2022 08:50:21 +0100
> 
> As far as I can read from maybe_produce_line_number in xdisp.c the face
> is one of a fixed set: line-number, line-number-current-line,
> line-number-major-tick or line-number-minor-tick.

Yes.

> IOW, there is no Elisp mechanism for changing the line number on a
> line-by-line basis, for example with some text property set on any
> character of the given line.
> 
> Could we implement one such mechanism?

No.  The native line-number display is implemented inside the low
level of the display code, and I don't want to call to Lisp from
there.  If nothing else, it will slow down redisplay when line numbers
are used, whereas avoiding that slowdown was an explicit goal of
developing native line-number display.

Why aren't the existing faces enough?  And if they aren't enough, why
cannot you use line-number-mode?



  reply	other threads:[~2022-07-22 11:00 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-22  7:50 Colorful line numbers João Távora
2022-07-22 11:00 ` Eli Zaretskii [this message]
2022-07-22 11:29   ` João Távora
2022-07-22 11:42     ` Eli Zaretskii
2022-07-22 12:02       ` João Távora
2022-07-22 13:27         ` Eli Zaretskii
2022-07-22 13:53           ` João Távora
2022-07-22 14:33             ` Eli Zaretskii
2022-07-22 15:10               ` João Távora
2022-07-22 15:38                 ` Eli Zaretskii
2022-07-22 16:30                   ` rmsbolt.el [Was: Colorful line numbers] João Távora
2022-07-22 19:53                     ` Stefan Monnier
2022-07-23  6:13                     ` Eli Zaretskii
2022-07-23  9:35                       ` João Távora
2022-07-23 10:25                         ` Eli Zaretskii
2022-07-23 14:43                           ` Stefan Monnier
2022-07-23 15:52                             ` Eli Zaretskii
2022-07-23 16:31                               ` Stefan Monnier
2022-07-23 17:07                                 ` Colorful line numbers Eli Zaretskii
2022-07-23 18:18                                 ` rmsbolt.el [Was: Colorful line numbers] João Távora
2022-07-23 18:11                           ` João Távora
2022-07-23 14:53                     ` Jay Kamat
2022-07-23 17:25                       ` Stefan Monnier
2022-07-23 17:34                         ` Eglot to core [Was: rmsbolt.el [Was: Colorful line numbers]] João Távora
2022-07-23 17:52                           ` Stefan Monnier
2022-07-24 18:58                             ` João Távora
2022-07-24 19:04                               ` Stefan Monnier
2022-07-25  1:05                               ` Po Lu
2022-07-25  2:45                                 ` Stefan Monnier
2022-07-25  5:55                                   ` Philip Kaludercic
2022-07-25 15:31                                     ` Stefan Monnier
2022-07-25  6:23                                   ` Po Lu
2022-07-25 10:49                                     ` Bozhidar Batsov
2022-07-25 11:01                                     ` João Távora
2022-07-25 11:50                                       ` Felician Nemeth
2022-07-25 12:27                                         ` João Távora
2022-07-25 12:29                                           ` João Távora
2022-07-25 15:00                                           ` Felician Nemeth
2022-07-25 15:41                                             ` João Távora
2022-07-26  8:12                                               ` Felician Nemeth
2022-07-26  8:21                                                 ` João Távora
2022-07-26  8:55                                                   ` Felician Nemeth
2022-07-25 16:07                                       ` Max Brieiev
2022-07-25 17:05                                         ` João Távora
2022-07-25 15:33                                     ` Stefan Monnier
2022-07-22 12:18 ` Colorful line numbers Dmitry Gutov
2022-07-22 12:38 ` Stefan Monnier
2022-07-22 13:41   ` Dmitry Gutov
2022-07-22 14:01     ` João Távora
2022-07-22 23:32     ` Stefan Monnier
2022-07-23 18:50       ` Dmitry Gutov

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