From: Yuan Fu <casouri@gmail.com>
To: Dmitry Gutov <dmitry@gutov.dev>
Cc: Eli Zaretskii <eliz@gnu.org>,
66732@debbugs.gnu.org, Stefan Monnier <monnier@IRO.UMontreal.CA>,
dominik@honnef.co
Subject: bug#66732: tree-sitter fontification doesn't update multi-line syntax reliably
Date: Thu, 14 Dec 2023 00:29:44 -0800 [thread overview]
Message-ID: <765D713E-9923-4F66-9044-9D69C104C9B0@gmail.com> (raw)
In-Reply-To: <eeef8325-b0f1-e5f2-5f64-c1aa7549f01a@gutov.dev>
> On Dec 13, 2023, at 5:43 PM, Dmitry Gutov <dmitry@gutov.dev> wrote:
>
> On 13/12/2023 05:28, Yuan Fu wrote:
>>>> c-ts-mode--emacs-set-ranges is registered as a range rule, so many tree-sitter function calls it before doing anything to make sure range is up-to-date. treesit-font-lock-fontify-region calls treesit-update-ranges at the beginning of its body, and treesit-update-ranges calls c-ts-mode--emacs-set-ranges.
>>>
>>> That seems to mean that any feature accessing the parse tree should call treesit-update-ranges first. Including syntax-propertize-functions and *-extend-region-functions, which we currently don't do.
>>>
>>> But which boundaries is it supposed to use? Should treesit--syntax-extend-region call treesit-update-ranges, when wait for the parser updates, then possibly call treesit-update-ranges again on the extended boundaries, and so on, until the parser stops sending notifications? Will it stop?
>> It'll stop. If the ranges don't change, no reparse will happen. And only buffer content change can cause range change. Reparse itself can't. So at most you'll see reparse -> update ranges -> reparse.
>>> Anyway, could you try my patch? Like I said, I'm not sure if the insufficient fontification I'm observing in c-ts-mode is due to the problem with the solution, or due to the other redisplay-related problems on my system.
>> Yeah, it doesn't solve the problem in c-ts-mode regarding block comments.
>> We might need to run (progn (force-parse) (update-ranges) (force-parse)) before jit-lock-fontify-now and sytax-ppss.
>
> Well... I've replaced
>
> (treesit-buffer-root-node (treesit-language-at (point)))
>
> in treesit--syntax-extend-region with
>
> (treesit-buffer-root-node (treesit-language-at (point)))
> (treesit-update-ranges beg end)
> (treesit-buffer-root-node (treesit-language-at (point)))
>
> and even tried commenting out the call to 'treesit-update-ranges' inside treesit-font-lock-fontify-region, but the result looks unchanged. And the region does get extended, according to my print-debugging inside font-lock-default-fontify-region.
>
> Could you check if you're seeing the same?
It should be
(treesit-buffer-root-node 'emacs-c)
(treesit-update-ranges)
(treesit-buffer-root-node ‘c)
I tried, and it doesn’t make a difference. But I must admit I’m not very clear on what your patch tries to do. Does it try to extend the to-be-fontified region before jit-lock runs?
Yuan
next prev parent reply other threads:[~2023-12-14 8:29 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-24 14:22 bug#66732: tree-sitter fontification doesn't update multi-line syntax reliably Dominik Honnef
2023-10-24 23:15 ` Dmitry Gutov
2023-10-29 12:22 ` Eli Zaretskii
2023-11-18 8:37 ` Eli Zaretskii
2023-12-11 4:16 ` Yuan Fu
2023-12-11 12:05 ` Eli Zaretskii
2023-12-11 14:35 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-11 15:53 ` Dmitry Gutov
2023-12-12 7:50 ` Yuan Fu
2023-12-12 12:43 ` Dmitry Gutov
2023-12-13 3:28 ` Yuan Fu
2023-12-13 3:45 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-13 7:12 ` Yuan Fu
2023-12-13 14:30 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-14 1:43 ` Dmitry Gutov
2023-12-14 8:29 ` Yuan Fu [this message]
2023-12-15 1:01 ` Dmitry Gutov
2023-12-15 7:12 ` Yuan Fu
2023-12-16 5:56 ` Yuan Fu
2023-12-16 15:22 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-16 17:11 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-16 17:23 ` Dmitry Gutov
2023-12-16 17:43 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-16 19:18 ` Yuan Fu
2023-12-16 19:57 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-16 23:09 ` Dmitry Gutov
2023-12-17 1:16 ` Yuan Fu
2023-12-17 18:32 ` Dmitry Gutov
2023-12-19 3:12 ` Yuan Fu
2023-12-20 1:52 ` Dmitry Gutov
2023-12-20 5:43 ` Yuan Fu
2023-12-20 11:31 ` Dmitry Gutov
2023-12-16 23:02 ` Dmitry Gutov
2023-12-20 2:01 ` Dmitry Gutov
2023-12-20 3:08 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-16 22:56 ` Dmitry Gutov
2023-12-18 18:27 ` Dmitry Gutov
2023-12-18 19:12 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-18 19:33 ` Eli Zaretskii
2023-12-18 23:10 ` Dmitry Gutov
2023-12-19 3:22 ` Eli Zaretskii
2023-12-19 3:40 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-19 12:41 ` Eli Zaretskii
2023-12-19 12:44 ` Dmitry Gutov
2023-12-20 20:50 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-23 10:17 ` Eli Zaretskii
2023-12-23 18:02 ` Yuan Fu
2023-12-23 20:46 ` Dmitry Gutov
2023-12-23 20:51 ` Dmitry Gutov
2023-12-23 23:07 ` Yuan Fu
2023-12-24 2:10 ` Dmitry Gutov
2023-12-24 3:02 ` Yuan Fu
2023-12-23 20:55 ` Dmitry Gutov
2023-12-24 6:03 ` Eli Zaretskii
2024-02-08 1:40 ` Yuan Fu
2023-12-18 23:08 ` Dmitry Gutov
2023-12-20 20:50 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-12-12 15:34 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
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