From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#19670: 24.4; pcase-let bug? Date: Sat, 24 Jan 2015 00:07:41 -0500 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1422076095 11931 80.91.229.3 (24 Jan 2015 05:08:15 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 24 Jan 2015 05:08:15 +0000 (UTC) Cc: 19670@debbugs.gnu.org To: Leo Liu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Jan 24 06:08:14 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1YEsxA-0008AD-S0 for geb-bug-gnu-emacs@m.gmane.org; Sat, 24 Jan 2015 06:08:13 +0100 Original-Received: from localhost ([::1]:34020 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YEsx9-0000lK-RH for geb-bug-gnu-emacs@m.gmane.org; Sat, 24 Jan 2015 00:08:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55093) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YEsx6-0000lD-KX for bug-gnu-emacs@gnu.org; Sat, 24 Jan 2015 00:08:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YEsx1-0006xr-D9 for bug-gnu-emacs@gnu.org; Sat, 24 Jan 2015 00:08:08 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:36027) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YEsx1-0006xi-9i for bug-gnu-emacs@gnu.org; Sat, 24 Jan 2015 00:08:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1YEsx0-0001tw-Cb for bug-gnu-emacs@gnu.org; Sat, 24 Jan 2015 00:08:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 24 Jan 2015 05:08:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19670 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 19670-submit@debbugs.gnu.org id=B19670.14220760677283 (code B ref 19670); Sat, 24 Jan 2015 05:08:02 +0000 Original-Received: (at 19670) by debbugs.gnu.org; 24 Jan 2015 05:07:47 +0000 Original-Received: from localhost ([127.0.0.1]:54719 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YEswk-0001tP-SD for submit@debbugs.gnu.org; Sat, 24 Jan 2015 00:07:47 -0500 Original-Received: from chene.dit.umontreal.ca ([132.204.246.20]:44167) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YEswi-0001tF-T0 for 19670@debbugs.gnu.org; Sat, 24 Jan 2015 00:07:45 -0500 Original-Received: from ceviche.home (lechon.iro.umontreal.ca [132.204.27.242]) by chene.dit.umontreal.ca (8.14.1/8.14.1) with ESMTP id t0O57f9f021353; Sat, 24 Jan 2015 00:07:41 -0500 Original-Received: by ceviche.home (Postfix, from userid 20848) id 7349666100; Sat, 24 Jan 2015 00:07:41 -0500 (EST) In-Reply-To: (Leo Liu's message of "Sat, 24 Jan 2015 10:42:33 +0800") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) X-NAI-Spam-Flag: NO X-NAI-Spam-Threshold: 5 X-NAI-Spam-Score: 0 X-NAI-Spam-Rules: 1 Rules triggered RV5195=0 X-NAI-Spam-Version: 2.3.0.9393 : core <5195> : inlines <1940> : streams <1378470> : uri <1843587> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:98664 Archived-At: > 1 produces (1) and 2 nil. Bug? Feature: the `pcase' form can have several branches (and defaults to nil if no branch matches), whereas the `pcase-let' form doesn't have the luxury of a "default case if it doesn't match", so we have to choose between "signal an error if it doesn't match" or "pretend it matched". I opted for the second choice. Stefan