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.devel Subject: Re: Code for cond* Date: Sun, 04 Feb 2024 08:58:28 -0500 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="14680"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: emacs-devel@gnu.org To: Richard Stallman Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Feb 04 14:59:22 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 1rWd1m-0003cF-9n for ged-emacs-devel@m.gmane-mx.org; Sun, 04 Feb 2024 14:59:22 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rWd17-0007Ey-24; Sun, 04 Feb 2024 08:58:41 -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 1rWd11-0007Ed-6Y for emacs-devel@gnu.org; Sun, 04 Feb 2024 08:58:35 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rWd0z-0005vR-6z; Sun, 04 Feb 2024 08:58:34 -0500 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 8710F100390; Sun, 4 Feb 2024 08:58:31 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1707055110; bh=61J2YhsbJtTQKAYqcAIAQ07OLmDm9tGAXC2c6n/PAvQ=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=S+Pj53D3Zlff/8TlOQCxQr70wnAG3C0JYSkswov11a3iU7sRBNEZgAf+psHw0Y+Ut TzAbopY/GJf1KYMZe8w6tzgt9aLIeNWOzUkz7SAMowGXP4UuZh4Z/95fk9ATR4JZfu 3coOb2oxe77oz1u45icZBEgbRkOw/Bsg+2cMngNVP0oh81cJhgh/8pmYZw2roSzN3N D4TDKsIAZXkxzxJVPa8ZS3GIiAQhQygT100NqqqB2lM/NsMH07eaRZVjnnY1+xwMvM dKeDEj3fPq6wToQYaM5wWWD5BV8JegNaT0SoTTg8kCANkOtEa0hPdQJ/FvZrl31cnk eRJY34axKhWKQ== Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id A3CA6100301; Sun, 4 Feb 2024 08:58:30 -0500 (EST) Original-Received: from pastel (69-165-153-17.dsl.teksavvy.com [69.165.153.17]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 7D2D712026C; Sun, 4 Feb 2024 08:58:30 -0500 (EST) In-Reply-To: (Richard Stallman's message of "Sat, 03 Feb 2024 23:46:29 -0500") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:315863 Archived-At: > > I don't think so. The primitive patterns were carefully chosen so it > > shouldn't be needed. E.g.: > > > (pcase-defmacro constrain (symbol exp) `(and ,symbol (guard ,exp))) > > You're talking about one of the two kinds of constrained variables -- > the more compex and general kind. The simple kind is (PREDICATE VAR > OTHER-ARGS). I am pretty sure a simple macro facility can't handle > tha because it isn't identified by pne specific symbol at the start, That's true. It would be a simple change. But we could provide the same facility with a different syntax which does come with a specific symbol at the start. Stefan