GNU bug report logs - #75456
31.0.50; Cannot find the definition of the predicate in `treesit-thing-settings'" sexp-list)

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Message #11 received at 75456 <at> debbugs.gnu.org (full text, mbox):

From: Vincenzo Pupillo <v.pupillo <at> gmail.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: Yuan Fu <casouri <at> gmail.com>, 75456 <at> debbugs.gnu.org
Subject: Re: bug#75456: 31.0.50;
 Cannot find the definition of the predicate in `treesit-thing-settings'"
 sexp-list)
Date: Thu, 09 Jan 2025 23:42:01 +0100

Ciao Juri,

In data giovedì 9 gennaio 2025 19:10:28 Ora standard dell’Europa centrale, 
Juri Linkov ha scritto:
> > Ciao,
> > this problem occurs with js-ts-mode when jsdoc is enabled. Occurs when you
> > place the cursor in a comment highlighted by jsdoc.
> > This is the error message:
> > 
> > "treesit-show-paren-data--categorize: peculiar error: ("Cannot find the
> > definition of the predicate in `treesit-thing-settings'" sexp-list)"
> 
> Recently I fixed bug#75198 and tested it on your mhtml-ts-mode
> where it works nicely, and (treesit-language-at (point))
> returns e.g. 'css' on embedded css.
> 
> However, now I discovered that (treesit-language-at (point))
> returns 'javascript' on embedded jsdoc parts of a js file.
> 
> I wonder is this intended?
> 
> Since 'treesit-node-match-p' uses node's parser, I could use
> (treesit-parser-language (treesit-node-parser (treesit-node-at (point))))
> that returns 'jsdoc'.
> 
> But first I'd like to know why treesit-language-at doesn't return the same?

Local parsers, like jsdoc or phpdoc, are "ignored" by several functions used 
by treesit. But I don't know in detail how treesit works.
I tried to return local parser languages ​​in the past, but both indentation 
and font-locking got messed up.
I just tried and the result is the same (maybe I did something wrong), and 
then treesit-parser-list also returns jsdoc as if it were a global parser.

@Yuan can be of more help.

Thanks.

Vincenzo

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