From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Philip Kaludercic Newsgroups: gmane.emacs.devel Subject: Re: Proposal: Forwards-Compatibility Library for Emacs Date: Tue, 21 Sep 2021 21:06:41 +0000 Message-ID: <87o88lr63i.fsf@posteo.net> References: <877dfavmzw.fsf@posteo.net> <87czp2c6qd.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="36171"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Lars Ingebrigtsen , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Sep 21 23:07:26 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 1mSmz8-0009CP-GQ for ged-emacs-devel@m.gmane-mx.org; Tue, 21 Sep 2021 23:07:26 +0200 Original-Received: from localhost ([::1]:53472 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mSmz7-0002Ad-29 for ged-emacs-devel@m.gmane-mx.org; Tue, 21 Sep 2021 17:07:25 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52894) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSmyW-0001Vh-HC for emacs-devel@gnu.org; Tue, 21 Sep 2021 17:06:48 -0400 Original-Received: from mout01.posteo.de ([185.67.36.65]:40801) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSmyU-000843-BW for emacs-devel@gnu.org; Tue, 21 Sep 2021 17:06:48 -0400 Original-Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id 1E8DE240029 for ; Tue, 21 Sep 2021 23:06:43 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1632258403; bh=/eaaYeatC0Tj5F4g8GzXvFNH1W57xHn17yW24655GZ8=; h=From:To:Cc:Subject:Autocrypt:Date:From; b=HJwSu+oyzObqZiejeSdxA/sGiDSf7B7hREzy5z68wigLlRYetSDY74GIhCsHsGdPY gVUZCv8uSbboDNOsESBwklLwAbl4SSx5aAJ+DZQz4kApMy1yTmOy12A4l7r5w8LkoF vap1eT01EveOQbztdxaQcg3mu2J5dIEZYihA396cVJiQAw9CtOR0xe7fcAqw8DJMro oXR1htK9ve1uMPmU5Odj9kDFITJ0R/xsl/WupWNeoQcZbu3ZGkRExxIpDR9SXG9jqT JBdnLJabRrlMC5Z7Wkr95MSZ3sXdKgC0Gs6RgUrjUC0h81SPJB371L0fay3Xgz438l 26AyY6FF4GRvw== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4HDYrf2w2hz6tm4; Tue, 21 Sep 2021 23:06:42 +0200 (CEST) Autocrypt: addr=philipk@posteo.net; prefer-encrypt=nopreference; keydata= mDMEYHHqUhYJKwYBBAHaRw8BAQdAp3GdmYJ6tm5McweY6dEvIYIiry+Oz9rU4MH6NHWK0Ee0QlBo aWxpcCBLYWx1ZGVyY2ljIChnZW5lcmF0ZWQgYnkgYXV0b2NyeXB0LmVsKSA8cGhpbGlwa0Bwb3N0 ZW8ubmV0PoiQBBMWCAA4FiEEDM2H44ZoPt9Ms0eHtVrAHPRh1FwFAmBx6lICGwMFCwkIBwIGFQoJ CAsCBBYCAwECHgECF4AACgkQtVrAHPRh1FyTkgEAjlbGPxFchvMbxzAES3r8QLuZgCxeAXunM9gh io0ePtUBALVhh9G6wIoZhl0gUCbQpoN/UJHI08Gm1qDob5zDxnIHuDgEYHHqUhIKKwYBBAGXVQEF AQEHQNcRB+MUimTMqoxxMMUERpOR+Q4b1KgncDZkhrO2ql1tAwEIB4h4BBgWCAAgFiEEDM2H44Zo Pt9Ms0eHtVrAHPRh1FwFAmBx6lICGwwACgkQtVrAHPRh1Fw1JwD/Qo7kvtib8jy7puyWrSv0MeTS g8qIxgoRWJE/KKdkCLEA/jb9b9/g8nnX+UcwHf/4VfKsjExlnND3FrBviXUW6NcB In-Reply-To: (Stefan Monnier's message of "Tue, 21 Sep 2021 15:24:02 -0400") Received-SPF: pass client-ip=185.67.36.65; envelope-from=philipk@posteo.net; helo=mout01.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, 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:275271 Archived-At: Stefan Monnier writes: >> The point here is to not to have any separate namespace, so that you can >> just can put core packages into ELPA without doing any rewrites. >> What's the concrete risk here? > > I think in practice it's usually not a problem, but I'd be surprised if > there aren't counter examples. So for a library that wants to do it in > a somewhat predictable/systematic way, I think it's much simple to have > all the definitions in a specific namespace (like `compat28-`), and then > it's a small matter of have a trivial `compat28.el` library that comes > with Emacs-28 which has a bunch of `defalias`. I am not sure how this would help provide forwards compatibility for older versions? Are you proposing that instead of using file-name-concat, libraries use compat28-file-name-concat that is defined in a library for older versions? My intuition would be that this wouldn't be worth the effort, seeing as most people would probably hesitate to use such long names. > The main advantage is that we then don't need to assess the possible > risks at all, so we're free to think about the things that actually matter. > > > Stefan -- Philip Kaludercic