From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: member inconsistency? Date: Mon, 01 Feb 2016 06:04:06 -0500 Message-ID: References: <87twly2iye.fsf@nicolasgoaziou.fr> <871t929f1e.fsf@gmx.net> <87oac5s2a7.fsf@gnu.org> Reply-To: rms@gnu.org NNTP-Posting-Host: plane.gmane.org Content-Type: text/plain; charset=Utf-8 X-Trace: ger.gmane.org 1454324722 32313 80.91.229.3 (1 Feb 2016 11:05:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 1 Feb 2016 11:05:22 +0000 (UTC) Cc: emacs-devel@gnu.org To: Fabrice Popineau Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Feb 01 12:05:15 2016 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 1aQCIC-0000Wi-2M for ged-emacs-devel@m.gmane.org; Mon, 01 Feb 2016 12:05:12 +0100 Original-Received: from localhost ([::1]:51786 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aQCIB-0005HI-Eq for ged-emacs-devel@m.gmane.org; Mon, 01 Feb 2016 06:05:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37873) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aQCHr-0005AT-RQ for emacs-devel@gnu.org; Mon, 01 Feb 2016 06:04:58 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aQCHa-0004zF-39 for emacs-devel@gnu.org; Mon, 01 Feb 2016 06:04:51 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:60303) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aQCH9-0004ei-0Y; Mon, 01 Feb 2016 06:04:07 -0500 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1aQCH8-0001u3-5F; Mon, 01 Feb 2016 06:04:06 -0500 In-reply-to: (message from Fabrice Popineau on Mon, 1 Feb 2016 07:10:34 +0000 (UTC)) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e 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:199115 Archived-At: [[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] > It makes it harder to catch the bug if you > inadvertently call member with its second > argument not being a sequence ? There are two ways to look at this: * Lists should end in nil, and if they don't, functions should complain. * It is useful generality if functions accept lists that end in some other atom. I don't see that the first is obviously preferable. -- Dr Richard Stallman President, Free Software Foundation (gnu.org, fsf.org) Internet Hall-of-Famer (internethalloffame.org) Skype: No way! See stallman.org/skype.html.