GNU bug report logs - #19324
25.0.50; add-function and nil

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Package: emacs;

Reported by: Leo Liu <sdl.web <at> gmail.com>

Date: Tue, 9 Dec 2014 04:56:02 UTC

Severity: normal

Found in version 25.0.50

Done: Leo Liu <sdl.web <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.0.50; add-function and nil
Date: Tue, 09 Dec 2014 12:55:22 +0800

1. Goto a buffer (e.g. text-mode) with eldoc-documentation-function nil
2. (add-function :after-until (local 'eldoc-documentation-function) #'ignore)
3. Move around to trigger eldoc error: (void-function nil)

Looks like the orig function is unconditionally called without checking
it's a function object.

Leo
This bug report was last modified 10 years and 168 days ago.

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