GNU bug report logs - #17234
24.3.50; overlay priority : cons cells make an error in ediff

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Package: emacs;

Reported by: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>

Date: Thu, 10 Apr 2014 09:38:02 UTC

Severity: important

Found in version 24.3.50

Done: Stefan Monnier <monnier <at> iro.umontreal.ca>

Bug is archived. No further changes may be made.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 17234 <at> debbugs.gnu.org, rgm <at> gnu.org
Subject: bug#17234: 24.3.50; overlay priority : cons cells make an error in ediff
Date: Fri, 11 Apr 2014 11:56:24 -0400

> Then how can we expect authors of other Lisp packages to be able to
> fix their code so it works with Emacs 24.4 and later?  We must say
> _something_ in NEWS.

It has always been the case that `priority' could be any value.

Any non-number value was treated as nil by the display engine, whereas
now some cons values are treated as something else.

But ediff's bug could already be triggered in Emacs<24.4 by a package
installing an overlay with a `priority' that's a cons cell.


        Stefan
This bug report was last modified 11 years and 116 days ago.

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