From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Replace trivial pcase occurrences in the Emacs sources Date: Wed, 31 Oct 2018 16:03:55 -0400 Message-ID: References: <83tvlcsnee.fsf@gnu.org> <20181029134722.GC4195@ACM> <87lg6gifnb.fsf@web.de> <87muqwxs7m.fsf@ericabrahamsen.net> <83h8h3jlyd.fsf@gnu.org> <8b897e43-679b-d38c-e185-0efe19c09342@yandex.ru> <83y3aei08p.fsf@gnu.org> <83o9bahz6i.fsf@gnu.org> <83in1ihtox.fsf@gnu.org> <83h8h2hsoe.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1541016174 19729 195.159.176.226 (31 Oct 2018 20:02:54 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 31 Oct 2018 20:02:54 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 31 21:02:50 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gHwhW-0004zu-81 for ged-emacs-devel@m.gmane.org; Wed, 31 Oct 2018 21:02:50 +0100 Original-Received: from localhost ([::1]:33279 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gHwjc-0008DC-By for ged-emacs-devel@m.gmane.org; Wed, 31 Oct 2018 16:05:00 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56935) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gHwit-0008D7-GM for emacs-devel@gnu.org; Wed, 31 Oct 2018 16:04:16 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gHwin-0004qo-Bz for emacs-devel@gnu.org; Wed, 31 Oct 2018 16:04:14 -0400 Original-Received: from [195.159.176.226] (port=43673 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gHwil-0004mi-CN for emacs-devel@gnu.org; Wed, 31 Oct 2018 16:04:08 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1gHwgY-0003tR-Ui for emacs-devel@gnu.org; Wed, 31 Oct 2018 21:01:50 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 15 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:rtHLBalpQBtZ+u4O6JqkEau8PXQ= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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:230910 Archived-At: > A thing can be called "destructuring" if it destructures something. > It's like a "flying carpet": the carpet that flies. But in our case > the patterns don't destructure anything, they are a means for > destructuring. And let's not forget that what I used this term currently is to talk about the specific way pcase patterns are used within pcase-let (i.e. the way pcase-let and friends skip the tests to verify that the pattern does match). So maybe we should just say "a pattern used to destructure" to clarify that it's not a property of the pattern but of the way it's being used. Stefan