From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: Code for cond* - cond*-match, cond*-subpat and backtrack-aliases Date: Sat, 03 Feb 2024 23:42:27 -0500 Message-ID: References: <87FCC950-68F3-4BE1-9ADC-FE1AB6C2BEC9@gmail.com> Reply-To: rms@gnu.org Content-Type: text/plain; charset=Utf-8 Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="2592"; mail-complaints-to="usenet@ciao.gmane.io" Cc: acm@muc.de, emacs-devel@gnu.org To: JD Smith Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Feb 04 05:43:23 2024 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 1rWULi-0000US-U5 for ged-emacs-devel@m.gmane-mx.org; Sun, 04 Feb 2024 05:43:23 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rWUKs-0007qb-0G; Sat, 03 Feb 2024 23:42:30 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rWUKq-0007qP-PV for emacs-devel@gnu.org; Sat, 03 Feb 2024 23:42:28 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rWUKp-0000JB-V3; Sat, 03 Feb 2024 23:42:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=Date:References:Subject:In-Reply-To:To:From: mime-version; bh=YENVsCicMzhPvZSkhaSSYxw8IpGpo3Z4tfGNrFHUCqA=; b=dS9nBrTN9ZLg nP3O/7GMsi0fUnHQGZ2IDncHdPS8j99U6rvEahqtq3O1adfpPWaBD3PMIP+DQYoIKumfYdYN/o2ZX bW3xV5iCRm9vBT3jLG7eCESApYXpt/8k6tpvV9YkLUM6H9XaGQ2V1SJPYk3qFVrjGFT8el5QLVv2F osN0wLd7Neo/aXl71qQFgjID96AWd4C1ZZpeXzVt7CwKMbcgjzDvLxxYbkKJdr0LEyY8PDI2uMBNN 8jiMO4nzLOUcI2ZJYJVEfo3KRHoja3pghbNauKh2aCh9C6w1NWxrR3NVKDJoax3RJg2hy2JxyTE4O heMInOe4IO9+WSuu0tefkA==; Original-Received: from rms by fencepost.gnu.org with local (Exim 4.90_1) (envelope-from ) id 1rWUKp-000861-76; Sat, 03 Feb 2024 23:42:27 -0500 In-Reply-To: (message from JD Smith on Thu, 1 Feb 2024 09:54:28 -0500) 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:315846 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. ]]] > A typical logical paths might be: > Is some variable non-nil? > Is it a plist? > Does that plist has a :foobar element? > Is that :foobar element's value a vector. > Is slot 4 of that vector non-nil? Call it `result'. > If all of the above are true, (do-something-with result) Maybe that should be another form of cond* clause. I will think about it. Any concrete ideas? -- Dr Richard Stallman (https://stallman.org) Chief GNUisance of the GNU Project (https://gnu.org) Founder, Free Software Foundation (https://fsf.org) Internet Hall-of-Famer (https://internethalloffame.org)