From: "Drew Adams" <drew.adams@oracle.com>
To: 8657@debbugs.gnu.org
Subject: bug#8657: 24.0.50; Emacs code that seems to use `*-single-char-property-change' incorrectly
Date: Wed, 11 May 2011 13:54:57 -0700 [thread overview]
Message-ID: <A0F39FF90C4641D5ACAFDACB8DE5F4CC@us.oracle.com> (raw)
`(next|previous)-single-char-property-change' behaves differently in a
couple of ways from `(next|previous)-single-property-change', besides
the difference of overlay vs text properties.
In particular, IIUC, the return value can never be nil.
Yet I see code such as this:
gnus-summary-show-thread:
(or (next-single-char-property-change end 'invisible) (point-max))
comint-next-prompt:
(setq pos (next-single-char-property-change pos 'field))
(cond (or (null pos)...
Isn't this incorrect?
In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
of 2011-05-10 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.5) --no-opt --cflags
-Ic:/build/include'
next reply other threads:[~2011-05-11 20:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-11 20:54 Drew Adams [this message]
2011-05-12 3:05 ` bug#8657: 24.0.50; Emacs code that seems to use `*-single-char-property-change' incorrectly Stefan Monnier
2011-05-12 4:44 ` Eli Zaretskii
2011-05-12 13:44 ` bug#8657: 24.0.50; Emacs code that seems to use `*-single-char-property-change'incorrectly Drew Adams
2012-02-06 14:00 ` bug#8657: 24.0.50; Emacs code that seems to use `*-single-char-property-change' incorrectly Chong Yidong
2012-02-06 22:56 ` Katsumi Yamaoka
2012-02-07 5:57 ` Chong Yidong
2012-02-07 6:34 ` Katsumi Yamaoka
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