From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jim Porter Newsgroups: gmane.emacs.bugs Subject: bug#66756: 30.0.50; [PATCH] Improve discussion of 'let' in Elisp Introduction manual Date: Sat, 18 Nov 2023 21:25:42 -0800 Message-ID: <381836df-c16f-b3e7-d0c4-473290e165de@gmail.com> References: <3ade119d-0f0d-e60e-1bdc-9c7e02c1559c@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------XQdsTGiwCBg1kuAdtZ080FQu" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6320"; mail-complaints-to="usenet@ciao.gmane.io" Cc: eliz@gnu.org, 66756@debbugs.gnu.org To: rms@gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Nov 19 06:26:26 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1r4aKA-0001Sm-CP for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 19 Nov 2023 06:26:26 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r4aJn-0006fr-EH; Sun, 19 Nov 2023 00:26:03 -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 1r4aJl-0006fY-9B for bug-gnu-emacs@gnu.org; Sun, 19 Nov 2023 00:26:01 -0500 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r4aJk-0006Ya-VX for bug-gnu-emacs@gnu.org; Sun, 19 Nov 2023 00:26:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1r4aJl-0000py-Ov for bug-gnu-emacs@gnu.org; Sun, 19 Nov 2023 00:26:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Jim Porter Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 19 Nov 2023 05:26:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 66756 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 66756-submit@debbugs.gnu.org id=B66756.17003715573207 (code B ref 66756); Sun, 19 Nov 2023 05:26:01 +0000 Original-Received: (at 66756) by debbugs.gnu.org; 19 Nov 2023 05:25:57 +0000 Original-Received: from localhost ([127.0.0.1]:49752 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r4aJg-0000pe-RM for submit@debbugs.gnu.org; Sun, 19 Nov 2023 00:25:57 -0500 Original-Received: from mail-oo1-xc2d.google.com ([2607:f8b0:4864:20::c2d]:57609) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r4aJa-0000pJ-7V for 66756@debbugs.gnu.org; Sun, 19 Nov 2023 00:25:55 -0500 Original-Received: by mail-oo1-xc2d.google.com with SMTP id 006d021491bc7-58786e23d38so2100021eaf.3 for <66756@debbugs.gnu.org>; Sat, 18 Nov 2023 21:25:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700371543; x=1700976343; darn=debbugs.gnu.org; h=in-reply-to:from:references:cc:to:content-language:subject :mime-version:date:message-id:from:to:cc:subject:date:message-id :reply-to; bh=DJHwToCv8+OIkkeHFm5DIUnjG/WHnnYnaRsXwmURpjE=; b=WFeBiMtUDGughp/nSv+qkHXS1gAGSEgMG7dqBvW3cm6BPx2UTFbiAnsdrmYaa4dMt8 HwYabYcckMnTpSHn+KLlaB2LCa5rFinMViJR5WODjg9RCqizGJpkbH2lPfjIdKYNfZXt hiUx3mjhlwYCUYgxfmxB7aMw6vKJZdGemVp24l+CWRLfZf6jiVtSRO+F8xKyXC6MDiyd IzTL0FiWv93PthT9R+YPAQaHCpA4981ySxFc+b9KJ/BI3AGCIMGxiZ2ikQJYNFyIP9/N XvpuOUcW7DMTPaH65XQ+5MW1zF1rMtMtclpaJ2NDBH9cdP3RwpGy6BGUHd6pQPTkeQ83 U46g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700371543; x=1700976343; h=in-reply-to:from:references:cc:to:content-language:subject :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=DJHwToCv8+OIkkeHFm5DIUnjG/WHnnYnaRsXwmURpjE=; b=ZlbhaRuS+08LMVwMtNkJvMpf+dDAGd8KwBhsjm68AtWLrW7aeZAS/C6FWNx5rgOmEL G14O2gaS8N96BAjO/1trztXisRuMfm0k4GfJ4TIphSXzJkuoV3HVxMISRj64IWil5efv aJnVSuHEUgWfQUI3DbRWFb55FK3uHTMMdkGMZ92n1ZSGnyRTZVl6GHseXk0EDkdl61Rk 7mlKu6rh0802tTqRA+xX79aYXsrA5il30K3GY7pWiYDGKGB2TWsqtUGpunkRq6ZBI+Av uq/eon30tiSF1ddSsXlTef6X+eNgdu97ATob43O4eaGkpOEWESKnVIfx5ZkMEk4PWfeH m4ww== X-Gm-Message-State: AOJu0Yw7lh4BWzcVisSml83VLvKcQS9QiFna4RAGdlwYGP3TK0Ngm6EP OYpJrj0Gh9ZTD6LueOta328= X-Google-Smtp-Source: AGHT+IEHUEXPFbyqQXbvQ+YFObbwCR0F0MGh67A70C7qDih21MCTOKnM88tkac3up8p+on6l+FnBFg== X-Received: by 2002:a05:6358:709:b0:168:e7ab:6877 with SMTP id e9-20020a056358070900b00168e7ab6877mr4540099rwj.6.1700371543049; Sat, 18 Nov 2023 21:25:43 -0800 (PST) Original-Received: from [192.168.1.2] (cpe-76-168-148-233.socal.res.rr.com. [76.168.148.233]) by smtp.googlemail.com with ESMTPSA id p18-20020a63fe12000000b0058988954686sm3783753pgh.90.2023.11.18.21.25.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 18 Nov 2023 21:25:42 -0800 (PST) Content-Language: en-US In-Reply-To: X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:274583 Archived-At: This is a multi-part message in MIME format. --------------XQdsTGiwCBg1kuAdtZ080FQu Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11/18/2023 7:39 PM, Richard Stallman wrote: > > +parts a ``scope''). For historical reasons, Emacs Lisp uses a form of > > +variable binding called ``dynamic binding'' by default. However, in > > +this manual, we discuss the preferred form of binding, called > > +``lexical binding'' (if you have programmed in other languages before, > > +you're likely already familiar with how lexical binding behaves). In > > +order to use lexical binding in a program, you should add this to the > > +first line of your Emacs Lisp file: > > + > > +@example > > +;;; -*- lexical-binding: t -*- > > +@end example > > + > > +For more information about this, @pxref{Selecting Lisp Dialect, , , > > +elisp, The Emacs Lisp Reference Manual}. > > Do we want to change the default some day to lexical binding:? If so, > we should say so somewhere in this manual -- perhaps here, perhaps > elsewhere, I believe that's the goal, yes. I've added a note that the maintainers eventually plan on making lexical binding the default. > > +If we instead change @code{lexical-binding} to have a value of > > +@code{nil}, we will get a different result here. > > "Get a different result" is vague -- it would be clearer if it said > concretely what will happen. > > I suggest you show the dynamci situation in the same way you show the lexical > situation. That will help people compare the two. Done. I've also expanded the prose explanation at the end in order to re-emphasize the differences between the two. --------------XQdsTGiwCBg1kuAdtZ080FQu Content-Type: text/plain; charset=UTF-8; name="0001-Introduce-let-using-lexical-binding-in-the-Lisp-Intr.patch" Content-Disposition: attachment; filename*0="0001-Introduce-let-using-lexical-binding-in-the-Lisp-Intr.pa"; filename*1="tch" Content-Transfer-Encoding: base64 RnJvbSBmODA1ZWJmNjVkYzIxOGM3YWU2MzI1MWEzNTdhNGRlYWFmNDVkNzUyIE1vbiBTZXAg MTcgMDA6MDA6MDAgMjAwMQpGcm9tOiBKaW0gUG9ydGVyIDxqcG9ydGVyYnVnc0BnbWFpbC5j b20+CkRhdGU6IFdlZCwgMjUgT2N0IDIwMjMgMjA6NDM6NTcgLTA3MDAKU3ViamVjdDogW1BB VENIXSBJbnRyb2R1Y2UgJ2xldCcgdXNpbmcgbGV4aWNhbCBiaW5kaW5nIGluIHRoZSBMaXNw CiBJbnRyb2R1Y3Rpb24KCkJ1ZyM2Njc1Ni4KCiogZG9jL2xpc3BpbnRyby9lbWFjcy1saXNw LWludHJvLnRleGkgKFByZXZlbnQgY29uZnVzaW9uKTogUmV3b3JrIHRoZQpleHBsYW5hdGlv biB0byBkaXNjdXNzIGhvdyB0aGluZ3Mgd29yayB1bmRlciBsZXhpY2FsIGJpbmRpbmcuCihI 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