From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: Fontification using a syntax tree
Date: Sat, 18 Sep 2021 14:14:35 -0400 [thread overview]
Message-ID: <jwv35q169i7.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87bl4pc2tq.fsf@hugot.nl> (Hugo Thunnissen's message of "Sat, 18 Sep 2021 15:37:21 +0000")
> is, how should I go about doing this? From what I understand, font-lock
> works with syntax tables, but if I use a syntax table for font-lock, I'm
font-lock has various parts. One part uses the syntax table to
highlight comments and strings. This can be disabled by setting
`font-lock-keywords-only`.
Another part is the one that obeys `font-lock-keywords` and these
happily accept rules that consist of delegating the work to a function.
IOW you can just say
(defconst foo-font-lock-keywords
`((,#foo--fontify-upto)))
(defun foo--fontify-upto (limit)
... Fontify between point and LIMIT ...
;; Return nil to tell font-lock that you're done.
nil)
(define-derived-mode ...
...
(setq-local font-lock-defaults '(foo-font-lock-keywords t))
...)
-- Stefn
prev parent reply other threads:[~2021-09-18 18:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-18 15:37 Fontification using a syntax tree Hugo Thunnissen
2021-09-18 15:48 ` Yuan Fu
2021-09-18 16:34 ` Hugo Thunnissen
2021-09-18 17:16 ` Clément Pit-Claudel
2021-09-18 18:14 ` Stefan Monnier [this message]
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