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: Three questions about pcase for Stefan Date: Sat, 23 Jan 2016 23:52:02 -0500 Message-ID: References: <87r3h8zfd4.fsf@web.de> <87mvrw8flb.fsf@web.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1453611333 20452 80.91.229.3 (24 Jan 2016 04:55:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 24 Jan 2016 04:55:33 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Jan 24 05:55:25 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 1aNChv-0006aQ-1J for ged-emacs-devel@m.gmane.org; Sun, 24 Jan 2016 05:55:23 +0100 Original-Received: from localhost ([::1]:59204 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNChu-0000Fc-5x for ged-emacs-devel@m.gmane.org; Sat, 23 Jan 2016 23:55:22 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56434) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNChh-0000FT-Ma for emacs-devel@gnu.org; Sat, 23 Jan 2016 23:55:10 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aNChe-0001uO-Gg for emacs-devel@gnu.org; Sat, 23 Jan 2016 23:55:09 -0500 Original-Received: from plane.gmane.org ([80.91.229.3]:58254) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNChe-0001to-9R for emacs-devel@gnu.org; Sat, 23 Jan 2016 23:55:06 -0500 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1aNChb-0006RY-Eo for emacs-devel@gnu.org; Sun, 24 Jan 2016 05:55:03 +0100 Original-Received: from 108.161.125.56 ([108.161.125.56]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 24 Jan 2016 05:55:03 +0100 Original-Received: from monnier by 108.161.125.56 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 24 Jan 2016 05:55:03 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 16 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 108.161.125.56 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) Cancel-Lock: sha1:2VGwnrty1htiEU3VlJAYdoooPns= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 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:198683 Archived-At: >> And to tell you the truth, I don't think it's a great idea to make nil >> and t match themselves. > Why? It would be quite useful in practice, and fit perfectly into the > rest of the semantics. Because, as history has shown, there are other "intuitive/natural" semantics for t and nil here, so I think it's better to just reject those patterns and avoid any possible confusion. > Of course one can still quote them... Indeed, and it's so easy to do, that I don't see much benefit in letting people drop the quote. Stefan