GNU bug report logs - #23933
25.1.50; Run a buffer-local hook with mapc

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Package: emacs;

Reported by: Tino Calancha <tino.calancha <at> gmail.com>

Date: Sun, 10 Jul 2016 10:19:02 UTC

Severity: minor

Found in version 25.1.50

Done: Tino Calancha <tino.calancha <at> gmail.com>

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: kifer <at> cs.stonybrook.edu, 23933 <at> debbugs.gnu.org, Tino Calancha <tino.calancha <at> gmail.com>
Subject: bug#23933: 25.1.50; Run a buffer-local hook with mapc
Date: Sun, 10 Jul 2016 11:18:56 -0400

>> -  (mapc #'funcall after-quit-hook-internal)
>> +  ;; after-quit-hook-internal is buffer-local; see `ediff-filegroup-action'.
>> +  (mapc (lambda (f) (or (eq f t) (funcall f))) after-quit-hook-internal)
>> ))
> Thanks, but why do we use mapc to run hooks?  We used to have
> run-hooks there.

after-quit-hook-internal is a variable, not a hook.

A hook is a symbol whose symbol-value slot holds a list of functions;
this happens to match a dynamically-bound variable, but not
a lexically-bound variable.


        Stefan
This bug report was last modified 9 years and 4 days ago.

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