From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?utf-8?Q?=C3=93scar_Fuentes?= Newsgroups: gmane.emacs.devel Subject: Re: scratch/command 064f146 1/2: Change command to interactive ... modes Date: Sun, 14 Feb 2021 17:02:33 +0100 Message-ID: <87pn12iqna.fsf@telefonica.net> References: <20210213141225.11309.86562@vcs0.savannah.gnu.org> <20210213141226.EEDFE20999@vcs0.savannah.gnu.org> <47209379-76df-4c97-e5ff-b3b04da0db1d@yandex.ru> <87zh07of0e.fsf@gnus.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="22521"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: emacs-devel@gnu.org Cancel-Lock: sha1:2e3jhS+Zx3f+zHgjTmqGfmBDxYI= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Feb 14 17:03:40 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 1lBJs4-0005lT-DM for ged-emacs-devel@m.gmane-mx.org; Sun, 14 Feb 2021 17:03:40 +0100 Original-Received: from localhost ([::1]:41314 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lBJs3-0000Cf-8d for ged-emacs-devel@m.gmane-mx.org; Sun, 14 Feb 2021 11:03:39 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44084) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lBJr8-00086m-VI for emacs-devel@gnu.org; Sun, 14 Feb 2021 11:02:43 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:40636) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lBJr7-0004xS-BE for emacs-devel@gnu.org; Sun, 14 Feb 2021 11:02:42 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lBJr4-0004dR-0G for emacs-devel@gnu.org; Sun, 14 Feb 2021 17:02:38 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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:264716 Archived-At: Lars Ingebrigtsen writes: > Dmitry Gutov writes: > >> On 13.02.2021 16:12, Lars Ingebrigtsen wrote: >>> +@defspec interactive &optional arg-descriptor &rest modes >> >> If we make it use (declare ...) instead, the feature could be made >> backward-compatible, and, for example, third-party code could take >> advantage of it to have Emacs 28 use these predicates, without >> breaking the code in Emacs 27 and earlier. > > Backwards compatibility is certainly nice, but I don't think it's a > priority when doing Emacs Lisp language design. I'm not sure if I understand this correctly, but in any case I'll mention that a change that requires a source construct incompatible with previous Emacs versions will have very limited adoption, not only among external packages, but among Emacs packages that are maintained externally (Org, C-Mode).