From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: lexical-binding is turned on in more use cases Date: Sun, 08 Mar 2020 15:39:27 -0400 Message-ID: References: <83pndo9zeb.fsf@gnu.org> <83o8t6bx2p.fsf@gnu.org> <83k13ubv3g.fsf@gnu.org> <83imjebsrh.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/x-markdown; coding=UTF-8 Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="102118"; 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: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Mar 08 20:40:19 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 1jB1mc-000QRC-2q for ged-emacs-devel@m.gmane-mx.org; Sun, 08 Mar 2020 20:40:18 +0100 Original-Received: from localhost ([::1]:32840 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jB1mb-0000Q1-4w for ged-emacs-devel@m.gmane-mx.org; Sun, 08 Mar 2020 15:40:17 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37873) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jB1lv-0008LA-FG for emacs-devel@gnu.org; Sun, 08 Mar 2020 15:39:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jB1lt-0003Mq-3D for emacs-devel@gnu.org; Sun, 08 Mar 2020 15:39:34 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:45340) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jB1lr-0003L6-6F; Sun, 08 Mar 2020 15:39:31 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 653AD81244; Sun, 8 Mar 2020 15:39:30 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id B8D0A80E46; Sun, 8 Mar 2020 15:39:28 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1583696368; bh=M/IKGHCAHs50muP2dsGtSj1NMVrDCHQjUUZC8IjOaSk=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=Eb7bYTwgwhZDRmYJVPZqAKBe29MmjXOrWWtPcXbpH7aZV/1x2hSj86rlqpvv28SFz P229WqOLdxs1OI6HZ9DLwF62BZqjfwJfhX3ytVPv37FQ0lgAd0a+hVfd6gq0MhoS9d qxqmELmCR2Q1oAPoupPkndIdJMMqYNBZCSC+QxRDh3Ly9wKsz5aD+iylQN+w8BcG4Y H6w7DuUDUsm+XpYFTe/oubbJ0SPvdzIHDbicCIDvLw0wmFQI4M73Bzg8hZaSdZ/nA/ L057LZ9dboZnd7Egi67suR7F4uzPHi8WXjrUU5WCuwpkBcAxMeHX0UsVwSxVrC0Zug 5u4L4pj2vugfA== Original-Received: from pastel (unknown [216.154.50.221]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 7EE4B12004D; Sun, 8 Mar 2020 15:39:28 -0400 (EDT) In-Reply-To: <83imjebsrh.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 08 Mar 2020 20:34:10 +0200") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 132.204.25.50 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:245360 Archived-At: >> We could say that to recover the original behavior, instead of >> >> --eval "" >> >> the command could use >> >> --eval "(eval ')" > > And the same for M-:? Right. These are not *good* solutions, but they're expedient. A way to kick the can a bit further down (I hope the non-lexical-binding mode will disappear before next century). The right solution is to fix the code so it works correctly with lexical-binding, which is usually a matter of adding a few `defvar`s or `require`s, but it takes more effort and knowledge. Of course, in the vast majority of cases the old code should work identically with lexical-binding as it did before. Stefan