From: Leo Alekseyev <dnquark@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: around advice: why does (and ad-do-it nil) return t?
Date: Mon, 13 Feb 2012 07:43:42 -0500 [thread overview]
Message-ID: <CADzxs1nBNR9FLrCwL3L5Au06K1DvRfBRETj2vECNPoC-01D_=g@mail.gmail.com> (raw)
Consider the following code:
(defun foobar () t)
(defadvice foobar (around foobar-advice activate)
(and ad-do-it nil))
Evaluating the advised foobar seems to return t. Why? Naively, one
expects (and [whatever] nil) to evaluate to nil!
next reply other threads:[~2012-02-13 12:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-13 12:43 Leo Alekseyev [this message]
2012-02-13 13:03 ` around advice: why does (and ad-do-it nil) return t? Jambunathan K
2012-02-14 4:18 ` Kevin Rodgers
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