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* Need help with search based font-locking
@ 2009-12-22 21:45 Tassilo Horn
  2009-12-22 22:43 ` Lennart Borgman
  0 siblings, 1 reply; 13+ messages in thread
From: Tassilo Horn @ 2009-12-22 21:45 UTC (permalink / raw)
  To: emacs-devel

Hi all,

in my greql-mode [1], I setup font-locking like that:

--8<---------------cut here---------------start------------->8---
(define-derived-mode greql-mode text-mode "GReQL"
  "A major mode for GReQL2."
  [...]
  (setq font-lock-defaults
        '((greql-fontlock-keywords-1
           greql-fontlock-keywords-2
           greql-fontlock-keywords-3)))
  (add-hook 'after-save-hook 'greql-set-fontlock-keywords-3 t t)
  [...]
  (define-key greql-mode-map (kbd "C-c C-f") 'greql-format))
--8<---------------cut here---------------end--------------->8---

`greql-fontlock-keywords-3's value is not static, it frequently changes.
So I update it after saving (as you can see), and at several other
places.  The updating of the variable works, but how do I tell font-lock
that it should use the new value and re-fontify the current buffer?

As a brute-force workaround, I can do

   (set (make-local-variable 'font-lock-keywords)
        greql-fontlock-keywords-3)
   (redisplay t)

but I guess this is very bad style.  And even then some things that
should be highlighted are not.  For those, I need to delete a char and
add it back to apply the new fontification.

I really tried to dig into the elisp manual, but I couldn't find any
help with font-lock-defaults KEYWORDS that aren't fixed.

Thanks for help!
Tassilo
__________
[1] GReQL is a graph query language developed at our institute.




^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2009-12-30 15:29 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-12-22 21:45 Need help with search based font-locking Tassilo Horn
2009-12-22 22:43 ` Lennart Borgman
2009-12-23 11:13   ` Tassilo Horn
2009-12-23 11:38     ` Tassilo Horn
2009-12-24  3:07     ` Stefan Monnier
2009-12-24  3:45       ` Lennart Borgman
2009-12-24  4:46         ` Stefan Monnier
2009-12-24 13:48           ` Lennart Borgman
2009-12-28 13:20             ` Tassilo Horn
2009-12-28 13:54               ` Lennart Borgman
2009-12-28 18:18                 ` Tassilo Horn
2009-12-30 13:56       ` Tassilo Horn
2009-12-30 15:29         ` Stefan Monnier

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