From: Wilhelm Kirschbaum <wkirschbaum@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 60453@debbugs.gnu.org
Subject: bug#60453: 29.0.60; treesit-range-rules throw an error without tree-sitter
Date: Sat, 31 Dec 2022 18:50:31 +0200 [thread overview]
Message-ID: <87r0wf7bm4.fsf@gmail.com> (raw)
In-Reply-To: <83lemn4jh8.fsf@gnu.org>
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Wilhelm Kirschbaum <wkirschbaum@gmail.com>
>> Date: Sat, 31 Dec 2022 16:53:08 +0200
>>
>>
>> With the following code without tree-sitter library:
>>
>> (defvar elixir-ts-mode--treesit-range-rules
>> (treesit-range-rules
>> :embed 'heex
>> :host 'elixir
>> '((sigil (sigil_name) @name (:match "^[H]$" @name)
>> (quoted_content)
>> @heex))))
>>
>> upon loading the mode I get the following error:
>>
>> treesit-range-rules: Symbol’s function definition is void:
>> treesit-query-compile
>>
>> This can easily be mitigated with (when
>> (treesit-available-p)...)
>> but think it should function similar to how
>> (treesit-font-lock-rules
>> work.
>
> Why does it make sense to protect treesit.el's code with
> treesit-available-p? You aren't supposed to use treesit.el
> functions
> when the tree-sitter library is not available. IOW, Lisp
> programs
> that want to use treesit-range-rules and other functions from
> treesit.el should make the treesit-available-p test _before_
> that.
Okay, that makes sense. I just saw this comment on
;; treesit.el#618
(defun treesit-font-lock-rules (&rest query-specs)
...
;; Other tree-sitter function don't tend to be called unless
;; tree-sitter is enabled, which means tree-sitter must be
compiled.
;; But this function is usually call in `defvar' which runs
;; regardless whether tree-sitter is enabled. So we need this
;; guard.
(when (treesit-available-p)
As treesit-range-rules also gets called with defvar and it is a
consistency
issue. I think the reason why this has not popped up before is
that no
other modes I have seen uses treesit-range-rules yet and think it
will
probably catch people off guard in the future.
next prev parent reply other threads:[~2022-12-31 16:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-31 14:53 bug#60453: 29.0.60; treesit-range-rules throw an error without tree-sitter Wilhelm Kirschbaum
2022-12-31 16:37 ` Eli Zaretskii
2022-12-31 16:50 ` Wilhelm Kirschbaum [this message]
2022-12-31 17:05 ` Eli Zaretskii
2022-12-31 17:08 ` Wilhelm Kirschbaum
2023-01-02 0:19 ` Yuan Fu
2023-01-17 9:41 ` Yuan Fu
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