GNU bug report logs - #11464
24.1.50; pos-visible-in-window-p returns a false positive with bidi text

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Package: emacs;

Reported by: Ari Roponen <ari.roponen <at> gmail.com>

Date: Sun, 13 May 2012 15:56:01 UTC

Severity: normal

Found in version 24.1.50

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Michael Welsh Duggan <mwd <at> cert.org>
Cc: ari.roponen <at> gmail.com, 11464 <at> debbugs.gnu.org
Subject: bug#11464: 24.1.50; pos-visible-in-window-p returns a false positive with bidi text
Date: Fri, 18 May 2012 00:11:00 +0300

> From: Michael Welsh Duggan <mwd <at> cert.org>
> Cc: Ari Roponen <ari.roponen <at> gmail.com>, 11464 <at> debbugs.gnu.org
> Date: Thu, 17 May 2012 13:56:45 -0400
> 
>   else if (top_y < it.last_visible_y) ==> if (255 < 256) ==> if (TRUE)
> 
> hence, visible_p _would_ be set to 1 by the else if clause.

And will never be reset to zero, because 27 <= 256 => FALSE.  And yet
Ari said that he needed to change the condition to <=.
This bug report was last modified 13 years and 4 days ago.

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