From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel 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 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1402002213 25250 80.91.229.3 (5 Jun 2014 21:03:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 5 Jun 2014 21:03:33 +0000 (UTC) Cc: emacs-devel@gnu.org To: Leo Liu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Jun 05 23:03:25 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wseoj-0002eW-Vt for ged-emacs-devel@m.gmane.org; Thu, 05 Jun 2014 23:03:22 +0200 Original-Received: from localhost ([::1]:43769 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wseoj-0002La-KA for ged-emacs-devel@m.gmane.org; Thu, 05 Jun 2014 17:03:21 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:34247) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WseoY-0002L8-RH for emacs-devel@gnu.org; Thu, 05 Jun 2014 17:03:18 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WseoJ-0007Re-NW for emacs-devel@gnu.org; Thu, 05 Jun 2014 17:03:10 -0400 Original-Received: from mercure.iro.umontreal.ca ([132.204.24.67]:48024) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WseoJ-0007RG-ID for emacs-devel@gnu.org; Thu, 05 Jun 2014 17:02:55 -0400 Original-Received: from hidalgo.iro.umontreal.ca (hidalgo.iro.umontreal.ca [132.204.27.50]) by mercure.iro.umontreal.ca (Postfix) with ESMTP id 8490784E14; Thu, 5 Jun 2014 17:02:54 -0400 (EDT) Original-Received: from lechon.iro.umontreal.ca (lechon.iro.umontreal.ca [132.204.27.242]) by hidalgo.iro.umontreal.ca (Postfix) with ESMTP id 7830C1E5838; Thu, 5 Jun 2014 17:02:29 -0400 (EDT) Original-Received: by lechon.iro.umontreal.ca (Postfix, from userid 20848) id 596F0B4167; Thu, 5 Jun 2014 17:02:29 -0400 (EDT) In-Reply-To: (Leo Liu's message of "Thu, 05 Jun 2014 17:11:53 +0000") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) X-DIRO-MailScanner-Information: Please contact the ISP for more information X-DIRO-MailScanner: Found to be clean X-DIRO-MailScanner-SpamCheck: n'est pas un polluriel, SpamAssassin (score=-2.82, requis 5, autolearn=not spam, ALL_TRUSTED -2.82, MC_TSTLAST 0.00) X-DIRO-MailScanner-From: monnier@iro.umontreal.ca X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 132.204.24.67 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:172377 Archived-At: > + (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