From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: Problem when run-hook-with-args with closure
Date: Fri, 19 Dec 2014 09:11:45 -0500 [thread overview]
Message-ID: <jwvoaqzn326.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: CAJnfWeFmL-xcp54vvz4R40-DZ199trj05_6UgH=7eS1tnz+wEw@mail.gmail.com
> (setq foo
> (lambda (y)
> (message "x+y=%d" (+ x y)))))
> (run-hook-with-args 'foo 1)
Hooks should contain *lists* of functions. The fact that they can also
just contain a function is an old backward compatibility hack: better
not rely on it.
So, if you do it right, you won't hit the bug:
(setq foo
(list (lambda (y)
(message "x+y=%d" (+ x y))))))
(run-hook-with-args 'foo 1)
Or better yet:
(add-hook 'foo
(lambda (y)
(message "x+y=%d" (+ x y))))))
(run-hook-with-args 'foo 1)
-- Stefan
next prev parent reply other threads:[~2014-12-19 14:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-18 6:57 Problem when run-hook-with-args with closure Zhongwei Yao
2014-12-19 9:09 ` Michael Heerdegen
2014-12-19 9:56 ` Zhongwei Yao
2014-12-19 11:13 ` Michael Heerdegen
2014-12-19 9:10 ` Michael Heerdegen
2014-12-19 14:11 ` Stefan Monnier [this message]
2014-12-22 11:20 ` Zhongwei Yao
2014-12-22 19:07 ` incremental search for "OK " matches "OK" followed by ^M for CR !? ISHIKAWA,Chiaki
2014-12-22 19:10 ` Drew Adams
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