From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andrea Corallo via "Emacs development discussions." Newsgroups: gmane.emacs.devel Subject: Re: Are "proper" closures used in Emacs sources? Date: Tue, 12 Jan 2021 16:48:20 +0000 Message-ID: References: <875z42s1r3.fsf@mbork.pl> Reply-To: Andrea Corallo Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32229"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: "emacs-devel@gnu.org" To: Marcin Borkowski Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jan 12 17:52:25 2021 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 1kzMu9-0008G8-Lz for ged-emacs-devel@m.gmane-mx.org; Tue, 12 Jan 2021 17:52:25 +0100 Original-Received: from localhost ([::1]:48982 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kzMu8-0005HS-Lp for ged-emacs-devel@m.gmane-mx.org; Tue, 12 Jan 2021 11:52:24 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56510) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kzMqU-0002Qg-H2 for emacs-devel@gnu.org; Tue, 12 Jan 2021 11:48:38 -0500 Original-Received: from mx.sdf.org ([205.166.94.24]:63816) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kzMqP-0003a2-Ou for emacs-devel@gnu.org; Tue, 12 Jan 2021 11:48:38 -0500 Original-Received: from mab (ma.sdf.org [205.166.94.33]) by mx.sdf.org (8.15.2/8.14.5) with ESMTP id 10CGmKxX007228; Tue, 12 Jan 2021 16:48:20 GMT In-Reply-To: <875z42s1r3.fsf@mbork.pl> (Marcin Borkowski's message of "Tue, 12 Jan 2021 14:50:24 +0100") Received-SPF: pass client-ip=205.166.94.24; envelope-from=akrl@sdf.org; helo=mx.sdf.org X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.devel:263002 Archived-At: Marcin Borkowski writes: > Hi all, > > it's been quite some time since lexical binding was introduced to > Elisp. Apart from possible optimizations and being less error-prone, it > allows for all the cool tricks with closures. Are there any places in > Emacs core where "proper" closures are actually used? (By "proper", > I mean closures with non-empty lexical environment, actually using said > environment.) I've put a print in `byte-compile-make-closure' and did a bootstrap. I'm counting 7289 occurrences in the Emacs code base. Is this a correct estimation? Andrea