GNU bug report logs - #77228
[PATCH] ; * lisp/cus-edit.el (custom-dirlocals-with-buffer): Use Custom-mode

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From: Mauro Aranda <maurooaranda <at> gmail.com>
To: Elijah Gabe Pérez <eg642616 <at> gmail.com>
Cc: 77228 <at> debbugs.gnu.org
Subject: bug#77228: [PATCH] ; * lisp/cus-edit.el (custom-dirlocals-with-buffer): Use Custom-mode
Date: Fri, 4 Apr 2025 07:49:55 -0300

[ Resending ]


Elijah Gabe Pérez <eg642616 <at> gmail.com> writes:

> Mauro Aranda <maurooaranda <at> gmail.com> writes:
>
>  Elijah Gabe Pérez <eg642616 <at> gmail.com> writes:
>
>  Tags: patch
>
>  Little patch for make customize-dirlocals use Custom-mode instead
>  fundamental-mode, Mostly intended for make this inherit and use
>  Custom-mode-hook.
>
>  I have tested it and at the moment it does not cause problems with the
>  configuration made.
>
>  Yes, I don't anticipate any real problems, but just using Custom-mode is
>  almost entirely redundant since some of the settings that it performs
>  are not relevant, and others get clobbered right away.
>
>  Overriden:
>  custom-mode-map, tool-bar-map, revert-buffer-function.
>
>  Not relevant:
>  custom–invocation-options, custom–hidden-state, custom-options,
>  custom-local-buffer, widget-edit-functions.
>
>  Redundant:
>  custom–initialize-widget-variables.
>
>  That just leaves us with the text-conversion-style and
>  touch-screen-keyboard-function settings, which my guess is that they
>  should've been added to custom-dirlocals-with-buffer too, and of course,
>  running Custom-mode-hook.
>
>  So I think it'd be better either to derive from Custom-mode, or find a
>  way to avoid the redundant settings.
>
> But making it derived won't include Custom-mode options anyway?

Yes, but we could arrange for Custom-mode to set the right values, I
think. Although maybe it's not worth it.

> I made it a major mode but not derived from it.
> I've included the Custom-mode options that are useful (as you pointed)
> and run Custom-mode-hook.

Anyway, I'm OK with this. Maybe we can use derived-mode-add-parents to
be clear that we consider Custom-mode a parent of this new mode. Some
comments below:

> * lisp/cus-edit.el (Custom-dirlocals-mode): New major mode.
> (custom-dirlocals-with-buffer): Move stuffs to
> `Custom-dirlocals-mode'.

"stuff".

> +(define-derived-mode Custom-dirlocals-mode nil "Custom dirlocals"
> +  "Major mode for Customize Directory Local Variables in the current 
directory."

Please mention that it runs Custom-mode-hook too.


Let's see if somebody else has an opinion. I'm on a trip for the
weekend, so it won't be until next week that I can install this.

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