GNU bug report logs - #77256
Treesit language-at-point

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Message #46 received at 77256 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Yuan Fu <casouri <at> gmail.com>, Vincenzo Pupillo <v.pupillo <at> gmail.com>,
 77256 <at> debbugs.gnu.org
Subject: Re: bug#77256: Treesit language-at-point
Date: Tue, 08 Apr 2025 21:43:20 +0300

>>>   (if treesit-language-at-point-function
>>>       (funcall treesit-language-at-point-function position)
>
> BTW, can we please avoid this anti-pattern?
> Instead, we should unconditionally call
> `treesit-language-at-point-function` and give a non-nil default value to
> this variable.
>
> This would make sure the `treesit-language-at-point-function` is good
> enough to implement the default behavior and it makes it possible to use
> `add-function` on `treesit-language-at-point-function`.

Unfortunately, it's too late to add a non-nil default value.

I already tried to do the same by adding 'forward-sexp-default-function'
to 'forward-sexp-function', but failed spectacularly (bug#70426),
because there are existing uses that expect the default value to be nil.

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