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bug#17023: 24.3.50; font-lock-add-keywords creates duplicates
From: |
lee |
Subject: |
bug#17023: 24.3.50; font-lock-add-keywords creates duplicates |
Date: |
Mon, 17 Mar 2014 11:48:24 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
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.
- bug#17023: 24.3.50; font-lock-add-keywords creates duplicates,
lee <=