all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Ihor Radchenko <yantar92@gmail.com>
To: Yuan Fu <casouri@gmail.com>
Cc: emacs-devel <emacs-devel@gnu.org>,
	 Theodor Thornhill <theo@thornhill.no>
Subject: Re: Recent updates to tree-sitter branch
Date: Sun, 25 Sep 2022 14:17:24 +0800	[thread overview]
Message-ID: <87wn9srn9n.fsf@localhost> (raw)
In-Reply-To: <C6117703-7C33-4DB5-A556-5EDF37511374@gmail.com>

Yuan Fu <casouri@gmail.com> writes:

> 2. Although treesit-font-lock-settings didn’t change, treesit-font-lock-defaults is abandoned. You are also now supposed to use treesit-font-lock-rules to build the queries and set it to treesit-font-lock-settings. It is much cleaner than setting treesit-font-lock-settings manually.

I am not sure if it has been discussed, but may I ask a few questions
regarding treesit-font-lock-rules.

If my understanding is correct, the font-lock rules are somewhat
equivalent font-lock-keywords, but much more limited.

font-lock-keywords elements can have a form of

 MATCHER
 (MATCHER . SUBEXP)
 (MATCHER . FACENAME)
 (MATCHER . HIGHLIGHT)
 (MATCHER HIGHLIGHT ...)
 (eval . FORM)

where MATCHER is either a regexp or a function.

treesit-font-lock-rules rules take a form of
(MATCHER FACENAME) or (MATCHER FUNCTION)

where MATCHER can only be a query.

Is there any reason why MATCHER in treesit-font-lock-rules cannot be a
function with access to the fontified node? It will allow more flexible
fontification, when programmatic query can be used to decide the
fontification.

Further, can OVERRIDE FLAG of the MATCH-HIGHLIGHT as in
font-lock-keywords be supported?

   "If OVERRIDE is t, existing fontification can be overwritten. If
    keep, only parts not already fontified are highlighted. If prepend or
    append, existing fontification is merged with the new, in which the new
    or existing fontification, respectively, takes precedence."

-- 
Ihor Radchenko,
Org mode contributor,
Learn more about Org mode at https://orgmode.org/.
Support Org development at https://liberapay.com/org-mode,
or support my work at https://liberapay.com/yantar92



  reply	other threads:[~2022-09-25  6:17 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-25  4:27 Recent updates to tree-sitter branch Yuan Fu
2022-09-25  6:17 ` Ihor Radchenko [this message]
2022-09-26  8:35   ` Yuan Fu
2022-09-26  9:43     ` Ihor Radchenko
2022-09-27 22:28       ` Yuan Fu
2022-09-29  4:01         ` Ihor Radchenko
2022-09-30 21:03           ` Yuan Fu
2022-10-01  4:20             ` Ihor Radchenko
2022-10-02  3:46               ` Yuan Fu
2022-10-02  7:33                 ` Ihor Radchenko
2022-10-02 22:54                   ` Yuan Fu
2022-10-03  5:58                     ` Ihor Radchenko
2022-10-04 16:58                       ` Yuan Fu
2022-09-29 10:13 ` Aurélien Aptel

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87wn9srn9n.fsf@localhost \
    --to=yantar92@gmail.com \
    --cc=casouri@gmail.com \
    --cc=emacs-devel@gnu.org \
    --cc=theo@thornhill.no \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.