From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id D88C91F670 for ; Fri, 20 Nov 2020 06:17:07 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 4E74B120B28; Fri, 20 Nov 2020 15:16:19 +0900 (JST) Received: from xtrwkhkc.outbound-mail.sendgrid.net (xtrwkhkc.outbound-mail.sendgrid.net [167.89.16.28]) by neon.ruby-lang.org (Postfix) with ESMTPS id 97831120B1A for ; Fri, 20 Nov 2020 15:16:17 +0900 (JST) Received: by filterdrecv-p3iad2-5dc87598f5-lqvwh with SMTP id filterdrecv-p3iad2-5dc87598f5-lqvwh-19-5FB75F54-3C 2020-11-20 06:16:52.948190202 +0000 UTC m=+294371.538439311 Received: from herokuapp.com (unknown) by ismtpd0033p1mdw1.sendgrid.net (SG) with ESMTP id b4OTWPBBQ4u0yDASjVPD4A for ; Fri, 20 Nov 2020 06:16:52.868 +0000 (UTC) Date: Fri, 20 Nov 2020 06:16:52 +0000 (UTC) From: matz@ruby.or.jp Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 76832 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Bug X-Redmine-Issue-Id: 10845 X-Redmine-Issue-Author: sawa X-Redmine-Issue-Assignee: matz X-Redmine-Sender: matz X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: =?us-ascii?Q?bXEIHGfdFwsIlBTndiToCp=2Fmc2rfxRD2sZAksRKJIHXSUxkitDkltUV0z7PsTr?= =?us-ascii?Q?sDs4Oatk9tdm+7dMzsL7H=2F9i3LJSO99V05SrQOV?= =?us-ascii?Q?c181QW3Tvp8jtiTI9HU5TSPJL1f1cWAzZ9ZRRVI?= =?us-ascii?Q?0UgnKTmYvIqzKPmYlnTWMylKTsKbUgvrSnAz36Q?= =?us-ascii?Q?FCsj1sYdhsKcmxYEz6ktDn3yZGTWH2Oc6TczI7m?= =?us-ascii?Q?hk=2F5dY7BHctLhlZRE=3D?= To: ruby-core@ruby-lang.org X-Entity-ID: b/2+PoftWZ6GuOu3b0IycA== X-ML-Name: ruby-core X-Mail-Count: 100958 Subject: [ruby-core:100958] [Ruby master Bug#10845] Subclassing String X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #10845 has been updated by matz (Yukihiro Matsumoto). I am OK with experimenting. But I've heard Rails relies on the old behavior (`SafeStringBuffer`?). In that case, it might be hard to apply this. Matz. ---------------------------------------- Bug #10845: Subclassing String https://bugs.ruby-lang.org/issues/10845#change-88615 * Author: sawa (Tsuyoshi Sawada) * Status: Open * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * ruby -v: 2.2 * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN ---------------------------------------- If I make a subclass of `String`, the method `*` returns an instance of that class. ~~~ruby class MyString < String end MyString.new("foo").*(2).class #=> MyString ~~~ This is different from other similar operations like `+` and `%`, which return a `String` instance. ~~~ruby MyString.new("foo").+("bar").class #=> String MyString.new("%{foo}").%(foo: "bar").class #=> String ~~~ I don't see clear reason why `*` is to be different from `+` and `%`, and thought that perhaps either the behaviour with `*` is a bug, or the behaviour with `+` and `%` is a bug. Or, is a reason why they are different? -- https://bugs.ruby-lang.org/