From: David Kastrup <dak@gnu.org>
Subject: Re: Modifying a hook while it's being executed
Date: Mon, 08 Aug 2005 22:55:17 +0200 [thread overview]
Message-ID: <854qa0174a.fsf@lola.goethe.zz> (raw)
In-Reply-To: mailman.3053.1123533819.20277.help-gnu-emacs@gnu.org
Henrik Enberg <henrik.enberg@telia.com> writes:
>> From: kcin@mytrashmail.com
>> Date: 8 Aug 2005 13:21:13 -0700
>>
>> rgb wrote:
>> >
>> > This line appears in remove-hook.
>> >
>> > (setq hook-value (delete function (copy-sequence hook-value)))
>> >
>> > It makes me think that a change to the hook's value will not
>> > be visible to the present execution of the run-hooks command.
>> > So I'd say it appears to be perfectly safe.
>>
>> Yes, it seems OK. However I wonder why it is not simply
>>
>> (setq hook-value (remove function hook-value))
>>
>> remove also returns a copy. Is there a difference?
>
> `remove' is part of the cl library which isn't supposed to be used in
> core Emacs.
remove is a compiled Lisp function in `subr'.
(remove ELT SEQ)
Return a copy of SEQ with all occurrences of ELT removed.
SEQ must be a list, vector, or string. The comparison is done with `equal'.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
next prev parent reply other threads:[~2005-08-08 20:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-08 15:32 Modifying a hook while it's being executed PT
2005-08-08 15:42 ` J. David Boyd
[not found] ` <mailman.3028.1123516720.20277.help-gnu-emacs@gnu.org>
2005-08-08 18:51 ` rgb
2005-08-08 20:21 ` kcin
2005-08-08 20:34 ` Henrik Enberg
[not found] ` <mailman.3053.1123533819.20277.help-gnu-emacs@gnu.org>
2005-08-08 20:55 ` David Kastrup [this message]
2005-08-08 21:08 ` Henrik Enberg
[not found] ` <mailman.3058.1123535725.20277.help-gnu-emacs@gnu.org>
2005-08-08 21:32 ` David Kastrup
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