From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Phil Sainty Newsgroups: gmane.emacs.devel Subject: Re: [C source] Inconsistent comments on preprocessor conditionals Date: Sat, 09 Jul 2022 02:21:40 +1200 Message-ID: References: <87sfnb3h5m.fsf@disroot.org> <8335fb4vc7.fsf@gnu.org> <6feb2ce2c5e249b74e836edd3ba0c7a0@webmail.orcon.net.nz> <83y1x33eum.fsf@gnu.org> <875yk73e12.fsf@disroot.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30978"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Orcon Webmail Cc: Eli Zaretskii , emacs-devel@gnu.org To: Akib Azmain Turja Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Jul 08 16:22:22 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1o9os9-0007uR-SP for ged-emacs-devel@m.gmane-mx.org; Fri, 08 Jul 2022 16:22:21 +0200 Original-Received: from localhost ([::1]:47172 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o9os8-0004Iz-E7 for ged-emacs-devel@m.gmane-mx.org; Fri, 08 Jul 2022 10:22:20 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51896) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o9ora-0003cp-5N for emacs-devel@gnu.org; Fri, 08 Jul 2022 10:21:46 -0400 Original-Received: from smtp-4.orcon.net.nz ([60.234.4.59]:36021) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o9orY-00063m-AV; Fri, 08 Jul 2022 10:21:45 -0400 Original-Received: from [10.253.37.70] (port=34633 helo=webmail.orcon.net.nz) by smtp-4.orcon.net.nz with esmtpa (Exim 4.90_1) (envelope-from ) id 1o9orU-0007m8-JW; Sat, 09 Jul 2022 02:21:40 +1200 Original-Received: from ip-116-251-140-135.kinect.net.nz ([116.251.140.135]) via [10.253.37.253] by webmail.orcon.net.nz with HTTP (HTTP/1.1 POST); Sat, 09 Jul 2022 02:21:40 +1200 In-Reply-To: <875yk73e12.fsf@disroot.org> X-Sender: psainty@orcon.net.nz X-GeoIP: -- Received-SPF: pass client-ip=60.234.4.59; envelope-from=psainty@orcon.net.nz; helo=smtp-4.orcon.net.nz X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:291971 Archived-At: On 2022-07-09 01:55, Akib Azmain Turja wrote: > #ifndef FOO > #else /* not !FOO */ > #endif /* not !FOO */ > > Very confusing though. It could be confusing to have an else clause with an "if not" in the first place (that double-negative is there regardless of whether it's commented that way too); but of course Eli is right -- my logic doesn't hold for that scenario.