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From: Ihor Radchenko <yantar92@gmail.com>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: 57003@debbugs.gnu.org
Subject: bug#57003: 28.1.90; Can local variables be loaded before loading major mode?
Date: Sun, 07 Aug 2022 21:23:01 +0800	[thread overview]
Message-ID: <874jyo6vd6.fsf@localhost> (raw)
In-Reply-To: <875yj443zy.fsf@gnus.org>

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I see.  In that case, it does seem attractive to allow file-local
> variables to set the variables before running the mode.  However, as
> Visuwesh points out, a major mode clears buffer-local variables, so just
> setting them before running the mode won't do anything.

Indeed. I imagine something like :before-hook in `define-derived-mode'
that will run just before the mode body.

Or maybe more direct :hack-local-variables-when defining when to run
`hack-local-variables' in contrast to currently hard-coded call in
`run-mode-hooks'. This is not equivalent to calling
`hack-local-variables' in :before-hook because `run-mode-hooks' would
call `hack-local-variables' second time in such a case.

Or maybe something more user-facing like major-mode-before-init-hook
that will be executed before the major mode body form in
`define-derived-mode'.

> So I think the interface here is just a bit confused and confusing.  It
> would make more sense to allow users to do these things via mode
> hooks/interface functions instead of variables.

Agree. However, the file-local variables specifically are not equivalent
to the mode hooks. File/directory-local variables can be set on
per-file/per-project basis, which is much more convenient compared to
explicitly defining a global hook.

Best,
Ihor






  reply	other threads:[~2022-08-07 13:23 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-05 11:44 bug#57003: 28.1.90; Can local variables be loaded before loading major mode? Ihor Radchenko
2022-08-06 13:06 ` Lars Ingebrigtsen
2022-08-06 13:35   ` Ihor Radchenko
2022-08-06 14:00     ` Visuwesh
2022-08-06 14:34       ` Phil Sainty
2022-08-07 12:44     ` Lars Ingebrigtsen
2022-08-07 13:23       ` Ihor Radchenko [this message]
2022-08-07 13:30         ` Lars Ingebrigtsen
2022-08-07 13:52           ` Ihor Radchenko
2022-08-08 11:28             ` Lars Ingebrigtsen
2022-08-08 12:30               ` Ihor Radchenko
2022-08-08 12:35                 ` Lars Ingebrigtsen
2022-08-08 12:58                   ` Ihor Radchenko
2022-08-08 14:23                     ` Lars Ingebrigtsen
2022-08-09 11:29                       ` Ihor Radchenko
2022-08-12 12:38                         ` Lars Ingebrigtsen
2022-08-13  1:33                           ` Phil Sainty
2022-08-13 11:52                             ` Lars Ingebrigtsen
2022-08-13  9:02                           ` Ihor Radchenko
2022-08-13 11:55                             ` Lars Ingebrigtsen
2022-08-13 12:22                               ` Ihor Radchenko
2022-08-13 12:32                                 ` Lars Ingebrigtsen
2022-08-15  3:09                                 ` Richard Stallman
2022-08-15  3:15                                   ` Ihor Radchenko
2022-08-17  2:50                                     ` Richard Stallman
2022-08-17 10:08                                       ` Ihor Radchenko
2022-08-29  3:34                                         ` Richard Stallman
2022-08-31  3:29                                           ` Ihor Radchenko
2022-10-18 13:29     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-29  6:24       ` Ihor Radchenko
2022-10-29 14:40         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-30  2:57           ` Ihor Radchenko
2022-10-30  3:43             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-30  3:51               ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-30  4:01                 ` Ihor Radchenko
2022-10-30 12:30                   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-31  3:08                     ` Ihor Radchenko
2022-10-30  6:59               ` Ihor Radchenko

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