From: Glenn Morris <rgm@gnu.org>
To: "Sebastien Vauban" <sva-news@mygooglest.com>
Cc: 15298@debbugs.gnu.org
Subject: bug#15298: 24.3.50; Background color lost when highlighting a string
Date: Wed, 13 Nov 2013 23:01:45 -0500 [thread overview]
Message-ID: <94fvqzk4wm.fsf@fencepost.gnu.org> (raw)
In-Reply-To: <86d2oksye6.fsf@somewhere.org> (Sebastien Vauban's message of "Sat, 07 Sep 2013 12:45:53 +0200")
Minimal example:
(defface foo '((t :foreground "blue" :background "yellow"))
"foo face")
(define-derived-mode foo-mode nil "foo"
"foo doc"
(set (make-local-variable 'font-lock-defaults)
'((("^FOO.*" . 'foo)))))
(font-lock-add-keywords 'foo-mode '(("bar" 0 'underline prepend)))
Eval that, M-x foo-mode, enter
FOO text bar text
As soon as "bar" is entered, "FOO..." loses its highlighting.
It works if you use instead:
(font-lock-add-keywords 'foo-mode '(("bar" 0 'underline prepend)) 'end)
Another approach that works is:
(define-derived-mode foo-mode nil "foo"
"foo doc"
(set (make-local-variable 'font-lock-defaults)
'((("^FOO.*" 0 'foo append))))) ; note addition of "append" here
(font-lock-add-keywords 'foo-mode '(("bar" 0 'underline)))
So I think this is not a bug, just a confusing aspect of the way
font-lock-keywords is applied in order.
next prev parent reply other threads:[~2013-11-14 4:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-07 10:45 bug#15298: 24.3.50; Background color lost when highlighting a string Sebastien Vauban
2013-11-14 4:01 ` Glenn Morris [this message]
[not found] ` <mailman.6032.1384401725.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.6032.1384401725.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-12-13 12:50 ` Sebastien Vauban
2013-12-13 14:11 ` Eli Zaretskii
2013-12-13 16:14 ` Josh
2013-12-13 18:45 ` Eli Zaretskii
2013-12-13 20:21 ` Josh
[not found] ` <mailman.9107.1386943937.10748.bug-gnu-emacs@gnu.org>
[not found] ` <mailman.9107.1386943937.10748.bug-gnu-emacs-mXXj517/zsQ@public.gmane.org>
2013-12-13 15:41 ` Sebastien Vauban
2013-12-13 16:08 ` Eli Zaretskii
2013-12-13 16:41 ` Stefan Monnier
[not found] ` <jwvk3f83dsp.fsf-monnier+emacsbugs-mXXj517/zsQ@public.gmane.org>
2013-12-13 19:02 ` Sebastien Vauban
2013-12-14 2:17 ` Stefan Monnier
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