From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Leo Liu <sdl.web@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: [Emacs-diffs] trunk r117274: * emacs-lisp/cl-macs.el (cl-macrolet): Avoid excessive progn's.
Date: Thu, 05 Jun 2014 17:02:29 -0400 [thread overview]
Message-ID: <jwvk38vxebn.fsf-monnier+emacsdiffs@gnu.org> (raw)
In-Reply-To: <E1WsbCj-0006W7-Hk@vcs.savannah.gnu.org> (Leo Liu's message of "Thu, 05 Jun 2014 17:11:53 +0000")
> + (let ((progn-maybe (lambda (body)
> + (if (cdr body) (cons 'progn body) (car body)))))
This is called macroexp-progn.
And instead of
(let ((foo (lambda ...)))
... (funcall foo body) ...
... (funcall foo body) ...)
better do
(let ((body-exp ...))
... body-exp ...
... body-exp ...)
-- Stefan
next parent reply other threads:[~2014-06-05 21:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1WsbCj-0006W7-Hk@vcs.savannah.gnu.org>
2014-06-05 21:02 ` Stefan Monnier [this message]
2014-06-05 23:03 ` [Emacs-diffs] trunk r117274: * emacs-lisp/cl-macs.el (cl-macrolet): Avoid excessive progn's Leo Liu
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