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: [PATCH] hack-one-local-variable use lexical-binding Date: Sun, 29 Nov 2020 15:38:11 -0500 Message-ID: References: <8E2B73D4-1269-4D0A-B572-7B6B47C46924@gnu.org> <83blfkqisb.fsf@gnu.org> <83wny4kw4b.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="6165"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Eli Zaretskii , Stefan Kangas , emacs-devel@gnu.org To: Tom Gillespie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Nov 29 21:39:45 2020 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 1kjTU0-000170-GG for ged-emacs-devel@m.gmane-mx.org; Sun, 29 Nov 2020 21:39:44 +0100 Original-Received: from localhost ([::1]:39428 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kjTTg-0006pQ-4D for ged-emacs-devel@m.gmane-mx.org; Sun, 29 Nov 2020 15:39:24 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55622) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kjTSj-0006Np-43 for emacs-devel@gnu.org; Sun, 29 Nov 2020 15:38:25 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:38792) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kjTSg-00010o-Sy; Sun, 29 Nov 2020 15:38:24 -0500 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 20C2F10021D; Sun, 29 Nov 2020 15:38:21 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 8F4C9100091; Sun, 29 Nov 2020 15:38:12 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1606682292; bh=ygoJtYzkuwfG1V3pYoTgH7Byz7fFR2DestGl0Kp9jG4=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=DUiqzVh9DyM8Tve3+sasQVjA2gC8Xiomhjgz8xuXqXOs7MTFuog0cfRshjfpv5rOy a/h5tQMhx0rXgoZHMiTqLSZYg+qRgqaS5gksC2LGRITgjq8wxyvLWaf/nJq3H7uURp BUfoqkyEnS2fPZU94pLbxfaGf9TxfNH2XVRouS09cML+zf+XDBDT8mnjorBPkFtAhd efXnJeIVGAEP8Y0su0CD6qWDINcUqb3A7I/SB/0T56JxNYal94AX9Efi9d3Lohk7HO CCvSvcb8DFgnUvJ5sJB3uBMvoTNeV0GC37W87OrVr+YzPGBuVpSY87rQWazBxan2Yt 4AcDSl83tOCdQ== Original-Received: from alfajor (69-165-136-52.dsl.teksavvy.com [69.165.136.52]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 4D5541201A6; Sun, 29 Nov 2020 15:38:12 -0500 (EST) In-Reply-To: (Tom Gillespie's message of "Sun, 29 Nov 2020 14:50:35 -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 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:260036 Archived-At: > The only outstanding question to me is whether users would be able to > control whether the eval local variable uses lexical binding at all > even in the future. I can imagine that when the switch to > lexical-binding being t by default happens there will be a need for an > escape hatch The lexical-binding dialect of ELisp already offers both dynamically scoped bindings and statically scoped bindings (controlled by the use of things like `defvar` and `dlet` to declare that a var should use dynamic scoping). Stefan