From: "Clément Pit--Claudel" <clement.pitclaudel@live.com>
To: 24176@debbugs.gnu.org
Subject: bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords
Date: Sun, 7 Aug 2016 02:41:30 -0400 [thread overview]
Message-ID: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> (raw)
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Hi bug-gnu-emacs,
Given the following mode definitions, I was expecting ~/a to have one keyword, ~/b to have two, and ~/c to have three:
(define-derived-mode ~/a fundamental-mode
(font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face))))
(define-derived-mode ~/b ~/a
(font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face))))
(define-derived-mode ~/c ~/b
(font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face))))
This assumption is wrong, as can be easily verified by opening a new buffer, inserting "abc", and switching between ~/a, ~/b, ~/c.
What's going on? Is this a font-lock bug, a doc bug, or a user-got-confused issue?
Clément.
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next reply other threads:[~2016-08-07 6:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-07 6:41 Clément Pit--Claudel [this message]
[not found] ` <handler.24176.B.14705521086608.ack@debbugs.gnu.org>
2016-08-07 6:57 ` bug#24176: Acknowledgement (Confusing interaction between define-derived-mode and font-lock-add-keywords) Clément Pit--Claudel
2016-08-25 0:53 ` bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords npostavs
2019-11-17 6:59 ` Lars Ingebrigtsen
2019-11-17 18:55 ` Stefan Monnier
2022-01-24 10:56 ` Lars Ingebrigtsen
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