GNU bug report logs - #8657
24.0.50; Emacs code that seems to use `*-single-char-property-change' incorrectly

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Package: emacs;

Reported by: "Drew Adams" <drew.adams <at> oracle.com>

Date: Wed, 11 May 2011 20:56:02 UTC

Severity: minor

Tags: notabug

Found in version 24.0.50

Done: Chong Yidong <cyd <at> gnu.org>

Bug is archived. No further changes may be made.

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Message #8 received at 8657 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: "Drew Adams" <drew.adams <at> oracle.com>
Cc: 8657 <at> debbugs.gnu.org
Subject: Re: bug#8657: 24.0.50;
	Emacs code that seems to use `*-single-char-property-change'
	incorrectly
Date: Thu, 12 May 2011 00:05:46 -0300

> 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?

The behavior might have changed at some point in time, explaining the
above code.


        Stefan
This bug report was last modified 13 years and 106 days ago.

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