From: Andreas Schwab <schwab@suse.de>
Cc: emacs-devel@gnu.org
Subject: Re: Strange behavior of macro
Date: Tue, 30 May 2006 12:23:49 +0200 [thread overview]
Message-ID: <jeirnng6a2.fsf@sykes.suse.de> (raw)
In-Reply-To: <BAY112-F6041A897C6A278835FE51DA920@phx.gbl> (Herbert Euler's message of "Tue, 30 May 2006 16:56:56 +0800")
"Herbert Euler" <herberteuler@hotmail.com> writes:
> Is the following in Emacs a expected behavior of macro?
>
> (defmacro m1 (v)
> (let ((len (length (eval v))))
> `(quote ,len)))
> => m1
[...]
> (m1 v)
> => error: (wrong-type-argument sequencep v)
See (elisp)Eval During Expansion.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2006-05-30 10:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-30 8:56 Strange behavior of macro Herbert Euler
2006-05-30 9:34 ` David Kastrup
2006-05-30 10:23 ` Andreas Schwab [this message]
2006-05-30 10:31 ` Herbert Euler
2006-05-30 10:35 ` Andreas Schwab
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