Re: An anonymous IRC user's opinion

[Eli Zaretskii]

> Date: Wed, 06 Nov 2024 14:46:48 +0200
> From: "Dmitry Gutov" <dmitry@gutov.dev>
> Cc: johan.myreen@gmail.com, emacs-devel@gnu.org
> 
> 
> On Wed, Nov 6, 2024, at 2:15 PM, Eli Zaretskii wrote:
> 
>  > Date: Tue, 5 Nov 2024 22:59:09 +0200
>  > Cc: johan.myreen@gmail.com, emacs-devel@gnu.org
>  > From: Dmitry Gutov <dmitry@gutov.dev>
>  > 
>  > On 05/11/2024 21:53, Eli Zaretskii wrote:
>  > >> Suppose we have this in css-mode.el:
>  > >>
>  > >>     ;;;###autoload
>  > >>     (if (and (treesit-available-p)
>  > >>              treesit-modes-enabled)
>  > >>         (add-to-list 'auto-mode-alist '("\\.css\\'" . css-ts-mode)))
>  > >>
>  > >> And treesit-mode-enabled is originally nil.
>  > >>
>  > >> Then the user customizes it to t.
>  > >>
>  > >> What does its setter do? For css-ts-mode and other modes.
>  > > 
>  > > It could turn the mode on in every buffer that visits a .css file.  Or
>  > > not.
>  > 
>  > Based on which information?
> 
>  buffer-file-name and auto-mode-alist, I guess?
> 
> But auto-mode-alist won't have any relevant entries because when its form 
> (above) was evaluated,
> treesit-modes-enabled was nil.

Are you saying that it is impossible to turn on the mode in relevant
buffers?  I find that hard to believe, but if you are right, then we
could refrain from doing this retroactively.

(And I still don't understand where this discussion is going.  What
point are you trying to make?)