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From: Alan Mackenzie <acm@muc.de>
To: Dmitry Gutov <dmitry@gutov.dev>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>,
	Eli Zaretskii <eliz@gnu.org>,
	emacs-devel@gnu.org
Subject: Re: Subversion of user chosen major mode by Emacs.
Date: Wed, 29 May 2024 12:51:52 +0000	[thread overview]
Message-ID: <Zlck6CjsdOfgZljT@ACM> (raw)
In-Reply-To: <63afa31a-7874-4d1f-a17a-14a64ba516cb@gutov.dev>

Hello, Dmitry.

On Wed, May 29, 2024 at 14:43:29 +0300, Dmitry Gutov wrote:
> On 29/05/2024 14:16, Alan Mackenzie wrote:
> >> I think this is a misfeature of `c-ts-mode.el`, but this was the result
> >> of a long discussion and I don't think we want to revisit that yet.
> > Why did nobody involve me in this discussion, considering that the
> > result involves "stealing" CC Mode users?

> This behavior is not new: loading a *-ts-mode has been overriding the 
> user preferences since 2023-01-20 (commit 6b2f85caa6).

That has nothing to do with my point it is supposedly answering.

I've just had a look at that commit, and it simply adds entries to
auto-mode-alist for the *-ts-mode modes in the traditional, normal and
acceptable fashion.  CC Mode does the same.

The problem comes in a comment in that patch encouraging users to
subvert the proper meaning of c-mode, etc., from being specific modes to
being vague generic modes.  This is completely unnecessary for the
normal user who uses only the *-ts- modes and not CC Mode.  It is a
confusing mess for users who wish to use both of these, say for
comparison.

> Perhaps your personal customization for auto-mode-alist had been 
> shielding you from the original issue. You can add a similar entry to 
> major-mode-remap-alist.

Not sure what "original issue" you're referring to.  My customisation
for auto-mode-alist is an eval-after-load for c-ts-mode which deletes
the *-ts- entries from auto-mode-alist.  This has worked fine until
recently and should be restored to working again.

All this confusion in auto-mode-alist, and the horrible workarounds of
major-mode-remp_\(alist\|defaults\) result from a fundamental conceptual
error, namely changing c-mode and friends from having specific meanings
to being vague generic symbols.  THIS is what I should have been
consulted about, as the owner of these symbols.

The latest symptom of this misunderstanding, which I bumped into
yesterday, is that Emacs changes the major mode of a C buffer with M-x
revert-buffer.  This is clearly unacceptable.

-- 
Alan Mackenzie (Nuremberg, Germany).



  reply	other threads:[~2024-05-29 12:51 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-28 10:53 My usage of imenu is broken Alan Mackenzie
2024-05-28 11:34 ` Eli Zaretskii
2024-05-28 13:57   ` Alan Mackenzie
2024-05-28 18:29     ` Eli Zaretskii
2024-05-28 20:46       ` Alan Mackenzie
2024-05-28 21:28         ` Stefan Monnier
2024-05-29  6:04           ` Juri Linkov
2024-05-29 11:31         ` Eli Zaretskii
2024-05-29  5:38       ` Yuan Fu
2024-05-28 21:55     ` Stefan Monnier
2024-05-29 11:16       ` Subversion of user chosen major mode by Emacs. [Was: My usage of imenu is broken.] Alan Mackenzie
2024-05-29 11:43         ` Dmitry Gutov
2024-05-29 12:51           ` Alan Mackenzie [this message]
2024-05-29 16:08             ` Subversion of user chosen major mode by Emacs Dmitry Gutov
2024-05-29 16:38               ` Eli Zaretskii
2024-05-29 17:56                 ` Dmitry Gutov
2024-05-29 19:22               ` Alan Mackenzie
2024-05-29 19:45                 ` Andrea Corallo
2024-05-29 19:59                   ` Alan Mackenzie
2024-05-30  5:01                     ` Eli Zaretskii
2024-05-30 11:02                       ` Alan Mackenzie
2024-05-29 22:10                 ` Dmitry Gutov
2024-05-30  5:51                   ` Eli Zaretskii
2024-05-30  5:44                 ` Eli Zaretskii
2024-05-29 12:41         ` Subversion of user chosen major mode by Emacs. [Was: My usage of imenu is broken.] Eli Zaretskii
2024-05-29 13:29           ` Subversion of user chosen major mode by Emacs Alan Mackenzie
2024-05-29 14:20             ` Eli Zaretskii
2024-05-29 15:04               ` Stefan Monnier
2024-05-29 19:17         ` Subversion of user chosen major mode by Emacs. [Was: My usage of imenu is broken.] Eli Zaretskii
2024-05-30  1:32         ` Stefan Monnier
2024-05-30  5:25           ` Eli Zaretskii
2024-05-30  7:39             ` Po Lu
2024-05-30  7:53               ` Eli Zaretskii
2024-05-30 14:18             ` Stefan Monnier
2024-05-30 14:33               ` Po Lu
2024-05-30 15:08                 ` Stefan Monnier
2024-05-30 14:56               ` Eli Zaretskii
2024-05-30 15:12                 ` Stefan Monnier
2024-05-30 15:29                   ` Alan Mackenzie
2024-05-30 18:30                     ` Stefan Monnier
2024-05-30 16:06                   ` Eli Zaretskii

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