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: Distinguishing `consp` and `functionp` Date: Fri, 26 Jan 2024 18:55:46 -0500 Message-ID: References: <86msssble8.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4076"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Eli Zaretskii , emacs-devel To: =?windows-1252?B?Sm/jbyBU4XZvcmE=?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Jan 27 00:56:47 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 1rTW3y-0000kk-Ov for ged-emacs-devel@m.gmane-mx.org; Sat, 27 Jan 2024 00:56:46 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rTW3A-0003cx-61; Fri, 26 Jan 2024 18:55:56 -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 1rTW38-0003cn-D7 for emacs-devel@gnu.org; Fri, 26 Jan 2024 18:55:54 -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 1rTW36-0005U8-4x; Fri, 26 Jan 2024 18:55:53 -0500 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 6924244471B; Fri, 26 Jan 2024 18:55:49 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1706313348; bh=oj/uwBQsBigbV/EnKzMwFvP81GEJKynAajHTI3WfIxw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=E5KXHzNTPB/f94GQWugqoJzJXK4RJgjowJCQ67/29IfVhTMbPl+FA0uE8cawtMUZe eV3SplUU3xeuJjNPBlvJEapZ06k7ZITlDdeUKrm2PZQq1wWWGCM0nSmqtjq87wIB3L fbWHzwG6F094sjoJKbNgJA8ghTZAVp+LGjw4Q0z6NJPGRf/eCpf0JgOTMzCIOl/KDm 0s4qDNz4SVisNB+Ipeap2ZISsY/0H/G3Co1R00ucxFVc9lvrWBI3VicQVIaaNv2kVS fzWeVXkCdKqjrLjRu9EcEnmilMJRvINv0zdrs+Db6u/IAnjj09viQs6Ys1zk7AyBzG B+dCyr2YarQIQ== Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 27A5C444718; Fri, 26 Jan 2024 18:55:48 -0500 (EST) Original-Received: from pastel (unknown [45.72.206.68]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id EDD4F120984; Fri, 26 Jan 2024 18:55:47 -0500 (EST) In-Reply-To: (=?windows-1252?Q?=22Jo=E3o_T=E1vora=22's?= message of "Fri, 26 Jan 2024 21:50:26 +0000") 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:315445 Archived-At: >> Rather I'm annoyed at the corner cases where >> >> (functionp (mapcar ...)) >> >> can occasionally return t, simply because the returned list happens to >> start with the symbol `closure` or `lambda`. > > So you want this to return nil, but still allow 'funcall' of > said returned lists? That's right: for compatibility reasons, I think we have to support the `funcall` case for the foreseeable future (and really, it costs very little to do so), but I think the `functionp` case doesn't need that level of backward compatibility. Tho, you'll note that my patch doesn't actually change `functionp`: that would be presumably done in a subsequent step. Stefan