From: lee <lee@yun.yagibdah.de>
To: 17023@debbugs.gnu.org
Subject: bug#17023: 24.3.50; font-lock-add-keywords creates duplicates
Date: Mon, 17 Mar 2014 11:48:24 +0100 [thread overview]
Message-ID: <87ha6xhzif.fsf@yun.yagibdah.de> (raw)
To reproduce:
emacs -q
C-x b test ;; switch to an arbitrary buffer
M-x describe-variable font-lock-keywords
;; The value of `font-lock-keywords' should be nil.
foobar
(font-lock-add-keywords nil '(("\\_<foobar\\_>" (0 'hi-yellow prepend))))
C-x e ;; to evaluate above expression --- "foobar" is being highlighted
M-x describe-variable font-lock-keywords
;; The value of `font-lock-keywords' is now:
font-lock-keywords is a variable defined in `font-lock.el'.
Its value is (t
(("\\_<foobar\\_>"
(0 'hi-yellow prepend)))
("\\_<foobar\\_>"
(0 'hi-yellow prepend)))
The 'hi-yellow face is defined in hi-lock.el. The
`font-lock-add-keywords' function even removes keywords before adding
them to avoid duplicates. Yet it seems to create duplicates itself.
In GNU Emacs 24.3.50.2 (x86_64-unknown-linux-gnu, X toolkit)
of 2014-03-17 on yun.yagibdah.de
Windowing system distributor `Fedora Project', version 11.0.11404000
Configured using:
`configure --without-gpm --without-toolkit-scroll-bars
--with-x-toolkit=lucid --enable-link-time-optimization'
--
Knowledge is volatile and fluid. Software is power.
next reply other threads:[~2014-03-17 10:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-17 10:48 lee [this message]
2014-03-17 15:06 ` bug#17023: 24.3.50; font-lock-add-keywords creates duplicates Stefan
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