From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#47261: Destructuring with Pcase without assigning values Date: Fri, 16 Apr 2021 23:22:57 -0400 Message-ID: References: <08c47ffc-58a3-d4f9-eae1-61a672d45b44@protonmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34267"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 47261@debbugs.gnu.org To: Okam Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Apr 17 05:24:09 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1lXbZ3-0008o8-Fq for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 17 Apr 2021 05:24:09 +0200 Original-Received: from localhost ([::1]:38188 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lXbZ2-00031j-8C for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 16 Apr 2021 23:24:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39750) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lXbYw-00031d-68 for bug-gnu-emacs@gnu.org; Fri, 16 Apr 2021 23:24:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:58701) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lXbYv-0004el-VN for bug-gnu-emacs@gnu.org; Fri, 16 Apr 2021 23:24:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lXbYv-0007bE-PM for bug-gnu-emacs@gnu.org; Fri, 16 Apr 2021 23:24:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 17 Apr 2021 03:24:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 47261 X-GNU-PR-Package: emacs Original-Received: via spool by 47261-submit@debbugs.gnu.org id=B47261.161862980129166 (code B ref 47261); Sat, 17 Apr 2021 03:24:01 +0000 Original-Received: (at 47261) by debbugs.gnu.org; 17 Apr 2021 03:23:21 +0000 Original-Received: from localhost ([127.0.0.1]:42014 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lXbYD-0007aH-Nd for submit@debbugs.gnu.org; Fri, 16 Apr 2021 23:23:21 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:15211) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lXbY7-0007Zz-NS for 47261@debbugs.gnu.org; Fri, 16 Apr 2021 23:23:16 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 3C3BF80931; Fri, 16 Apr 2021 23:23:06 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 4A029801F1; Fri, 16 Apr 2021 23:23:04 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1618629784; bh=XMNJcte6IC57C3ttyGSutfZzgyft6xj6i9naEH9YCIc=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=WqG9QdrSp5k+LaitwTab7UzY4yVVJO+tWgibphxBn4frwzYFSfINwaZv9HLhuph3d x3EKl8PPF9rgWQYitCYEumKSXaYbNUmYGAnGqVrQm2Kc+rD9Kvi9Z7QikDyqFHgcUD UZXK2qVxMCLkZppHGDLJP9wevUecuHALpx2kfUrg3kk5Y+ly3zBdmm8HAt0JD6k5sN rYq3bRuSen/W6ADa8VtukPHIGNLiMT/sRIrkXi/cvkkvB2B/cBNdRgVmtCcSmHwaZ0 nA/ALdNi7Ds7zpR9AiQZXnCEF/FVDIgy4kRweJ2PhkR/+N5j/X1zatyJS6Yj3B2A7m EbwyteuNRbCXw== Original-Received: from alfajor (104-222-126-84.cpe.teksavvy.com [104.222.126.84]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 06960120329; Fri, 16 Apr 2021 23:23:03 -0400 (EDT) In-Reply-To: <08c47ffc-58a3-d4f9-eae1-61a672d45b44@protonmail.com> (Okam's message of "Sat, 17 Apr 2021 01:24:11 +0000") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:204169 Archived-At: >> The `pcase` macro itself uses this function, so it should hopefully be >> "good enough", but let me know if it's causing you trouble. > This seems to work well for my use case. Thank you for making this change. You're welcome. It was actually a good change for the code's readability as well. > Are the variables always given in the order that they appear in the > pattern? I don't know. Why? > If not, is finding elements of the form "(\, SYMBOL)" enough to > identify variables in a Pcase pattern? No. , is not even one of the core pcase patterns, it's only something used within the ` pattern (which is not a core pattern either; it is defined via `pcase-defmacro`). Stefan