From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Anaphoric macros: increase visibility Date: Sun, 15 Jan 2017 10:32:38 -0500 Message-ID: References: <87wpdyivvf.fsf@web.de> <87k29xqhqp.fsf@web.de> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1484494455 23574 195.159.176.226 (15 Jan 2017 15:34:15 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 15 Jan 2017 15:34:15 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Jan 15 16:34:12 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cSmoZ-00047a-Hq for ged-emacs-devel@m.gmane.org; Sun, 15 Jan 2017 16:33:51 +0100 Original-Received: from localhost ([::1]:51939 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cSmoe-0000LJ-0X for ged-emacs-devel@m.gmane.org; Sun, 15 Jan 2017 10:33:56 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51013) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cSmo5-0000LA-Cb for emacs-devel@gnu.org; Sun, 15 Jan 2017 10:33:22 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cSmo2-0002vd-9F for emacs-devel@gnu.org; Sun, 15 Jan 2017 10:33:21 -0500 Original-Received: from [195.159.176.226] (port=48053 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cSmo2-0002vA-2R for emacs-devel@gnu.org; Sun, 15 Jan 2017 10:33:18 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cSmnk-0008Gl-Lq for emacs-devel@gnu.org; Sun, 15 Jan 2017 16:33:00 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 13 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:TaSO9M9u8cHFNI7o2RE/LOeNl44= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:211311 Archived-At: Tino writes: >> (pcase-let ((`(,a ,b) '(1 2 3))) >> (list a b)) >> ==> (1 2) >> although the pattern doesn't match. > I can be bitten with that pitfall as well. I think the problem is in the name: it really should be called just `let`. It does not do any *match*, instead the pcase pattern is only used to specify how to *extract* the data we want. Stefan