From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: 7 logical-xor implementations in source tree Date: Thu, 25 Jul 2019 10:28:47 -0700 Organization: UCLA Computer Science Department Message-ID: <93624180-bd67-926a-dd8c-757772e14eeb@cs.ucla.edu> References: <87tvbd9a8p.fsf@oremacs.com> <87pnm14u95.fsf@tcd.ie> <87sgqvoz5c.fsf@tcd.ie> <87d0hz2e11.fsf@tcd.ie> <5B633129-B795-4BFA-AE81-FE9FD0A24CE9@acm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="108892"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 Cc: emacs-devel@gnu.org, Stefan Monnier , Oleh Krehel To: =?UTF-8?Q?Mattias_Engdeg=c3=a5rd?= , "Basil L. Contovounesios" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Jul 25 19:28:55 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hqhXy-000SCw-7g for ged-emacs-devel@m.gmane.org; Thu, 25 Jul 2019 19:28:54 +0200 Original-Received: from localhost ([::1]:34332 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqhXx-0002qx-3F for ged-emacs-devel@m.gmane.org; Thu, 25 Jul 2019 13:28:53 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60258) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hqhXu-0002qm-QJ for emacs-devel@gnu.org; Thu, 25 Jul 2019 13:28:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hqhXt-0003Ce-Q5 for emacs-devel@gnu.org; Thu, 25 Jul 2019 13:28:50 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:45222) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hqhXt-0003Am-Jx for emacs-devel@gnu.org; Thu, 25 Jul 2019 13:28:49 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 6F55416007D; Thu, 25 Jul 2019 10:28:48 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id rXg64nMlFKTq; Thu, 25 Jul 2019 10:28:47 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id C0D58162717; Thu, 25 Jul 2019 10:28:47 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id NDJNDHrKta7Y; Thu, 25 Jul 2019 10:28:47 -0700 (PDT) Original-Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 9393916007D; Thu, 25 Jul 2019 10:28:47 -0700 (PDT) In-Reply-To: <5B633129-B795-4BFA-AE81-FE9FD0A24CE9@acm.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 131.179.128.68 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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:238893 Archived-At: Mattias Engdeg=C3=A5rd wrote: > there are many ways of open-coding the logic depending on the circumsta= nces. (Examples from a simple pattern search at the end.) Thanks for those examples: they form a compelling argument for adding bot= h=20 'equiv' and 'xor' (under whatever names we choose).