From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Yuri Khan Newsgroups: gmane.emacs.help Subject: Re: [OFFTOPIC] Semver Date: Tue, 6 Jul 2021 16:28:05 +0700 Message-ID: References: <87sg147b7g.fsf@yandex.com> <87sg12ocse.fsf@cock.li> <87o8bp9e72.fsf@zoho.eu> <87v95v5dzy.fsf@zoho.eu> <87zgv0bg9s.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="37415"; mail-complaints-to="usenet@ciao.gmane.io" To: Emanuel Berg , help-gnu-emacs Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Jul 06 11:28:48 2021 Return-path: Envelope-to: geh-help-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 1m0hNn-0009aC-8l for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 06 Jul 2021 11:28:47 +0200 Original-Received: from localhost ([::1]:48878 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0hNm-0002gm-97 for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 06 Jul 2021 05:28:46 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34662) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0hNL-0002fg-Rh for help-gnu-emacs@gnu.org; Tue, 06 Jul 2021 05:28:19 -0400 Original-Received: from mail-vs1-xe2e.google.com ([2607:f8b0:4864:20::e2e]:33601) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m0hNK-0004y7-9k for help-gnu-emacs@gnu.org; Tue, 06 Jul 2021 05:28:19 -0400 Original-Received: by mail-vs1-xe2e.google.com with SMTP id j8so11575718vsd.0 for ; Tue, 06 Jul 2021 02:28:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :content-transfer-encoding; bh=b7GI+ojfHEn08bRF4vshCJ3onBUBlubVPhoJaDk+DvA=; b=YwUvoFCdSjcNSh85SMmjQA8Z9/8Avwg3FhhV0KfCHJ4jYfc5MqnHzJxYudf//0qf7B UTXZjbOIwtSZtzG5Hp3yR1jvgQ9UY9QT5YqKf11myJ7Y13rR1VZ8dBKa8PCxCHjmPbqH obuy/v8zucBf5dThIR+klaQnHrqlib42My0Ru8vKfuW1RXaiCpsUEVZEEW4EiOcslMwl 71XT4QZnUTCAwkzIz6VQFNALmAyQZVctfCBwGEWLilAYTQTu5A7zxX3V/S0A/1hgl8g1 F7awPEWKiJwWX3MdNa/gfyERav+SR5vKPabvjA3KZMLpt+/DO59Jt0bdnCEPPjiQxDoa 5xpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:content-transfer-encoding; bh=b7GI+ojfHEn08bRF4vshCJ3onBUBlubVPhoJaDk+DvA=; b=PCazybeBild1IwYqmEyvHketIxSMIfT2l0QMuMh9PYzwS16rvOosHo/6d8jsGzUs/u A1cEjig2UPkgChCQJWGEtq1/RT+sQplfp72GpGH6zRfYg8EMt5n1O+JbubocWKDP5i5T 3HaNn4sTLnUET9NzdAFae+wAfsIlY0yVdtMZ9r/c2gYjZz8fnD4ZQ8MbKiyVBS/a3iaP 3HTpqGQNF0nIKXunfTkRBLTkMDCDazHox+5vxwh7Iq2pL+JP76E5XvZjnwBToQoC3+An POCLJ/NfIBp10P6phzopbPArIoEY9Jli+W/Fq5JAl5Xqm/jNrQpPCoFraowIEVHQFUhc fuGw== X-Gm-Message-State: AOAM533zMsctk3hzP0Jhn0R3+UsJeCtGkOY+wF46+IBsRKoSIHEoi1n6 G9HaGtNHEYLQpJcS80ixsy5Dx301stflZLAMDVM= X-Google-Smtp-Source: ABdhPJyanNEIBCBOzB8BkUrb6rNNShqwx9ARVXyjllZwoMZT/ZMNTHytcO9VkUFh0n80oXu7ZomXHYHz8IYN6tljd+g= X-Received: by 2002:a67:1d06:: with SMTP id d6mr13825337vsd.31.1625563697287; Tue, 06 Jul 2021 02:28:17 -0700 (PDT) In-Reply-To: <87zgv0bg9s.fsf@zoho.eu> Received-SPF: pass client-ip=2607:f8b0:4864:20::e2e; envelope-from=yurivkhan@gmail.com; helo=mail-vs1-xe2e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:131551 Archived-At: On Tue, 6 Jul 2021 at 04:30, Emanuel Berg via Users list for the GNU Emacs text editor wrote: > >> But what do you do to preserve/break forward compatibility? > > > > Strictly speaking, any change to the code can break > > something somewhere > > but the general rule to preserve forward compatibility is > > "don't introduce new features". > So, new features -> major, drop support -> minor (forward > OK but not backward), and bugfix -> micro/patch (forward OK, > backward OK) ? No, you=E2=80=99ve got it backward. When we say =E2=80=9Cversion 4.5 is backward-compatible with 4.2=E2=80=9D, = we mean =E2=80=9CAny software that works correctly with our version 4.2 will also w= ork correctly with version 4.5=E2=80=9D. This means no features were removed th= at you=E2=80=99d miss if you upgrade, and no incompatible changes have been introduced (but some new features may have been added). When we say =E2=80=9Cversion 4.5.3 is forward-compatible with 4.5.1=E2=80= =9D, we mean =E2=80=9CAny software that works with 4.5.3 will also work with 4.5.1=E2=80= =9D. This means there are no new features in 4.5.3 that you=E2=80=99d miss if you downgrade (except that you may encounter old bugs). Bug fixes only: increment patch, compatible both ways. Feature additions: increment minor, backward compatibility only. Feature removals: increment major, no compatibility guaranteed. Dependent software must review changes and integration notes before upgrading.