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-ASN: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-2.6 required=3.0 tests=AWL,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=no 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 AF2781F463 for ; Wed, 25 Dec 2019 11:15:59 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 838E1120940; Wed, 25 Dec 2019 20:15:46 +0900 (JST) Received: from o1678948x4.outbound-mail.sendgrid.net (o1678948x4.outbound-mail.sendgrid.net [167.89.48.4]) by neon.ruby-lang.org (Postfix) with ESMTPS id 2E84612093B for ; Wed, 25 Dec 2019 20:15:43 +0900 (JST) Received: by filterdrecv-p3las1-5bf99c48d-527wg with SMTP id filterdrecv-p3las1-5bf99c48d-527wg-18-5E0344E4-E 2019-12-25 11:15:48.244160828 +0000 UTC m=+728998.979660546 Received: from herokuapp.com (unknown [3.83.106.33]) by ismtpd0001p1iad1.sendgrid.net (SG) with ESMTP id Bl71Uht7TWWIBzitkm1pdA for ; Wed, 25 Dec 2019 11:15:48.165 +0000 (UTC) Date: Wed, 25 Dec 2019 11:15:48 +0000 (UTC) From: eregontp@gmail.com Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 72124 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 15973 X-Redmine-Issue-Author: alanwu X-Redmine-Issue-Assignee: matz X-Redmine-Sender: Eregon 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?KippOI8ZHtTweq7XfQzW93937kJ4QNWwSBuHnaMEcr3HEWH5BBzILL0S0mHFGu?= =?us-ascii?Q?qbtdIvST802SykQsMr0k8VxHpTY+=2FDkYnaN+1da?= =?us-ascii?Q?zuIR1vN+faypbOjN76wNcvz3HJ8RibJDLcq1LTT?= =?us-ascii?Q?G89HULVxt9NyiOwvlgLin9EvWjQLeb=2FXx5gNYEW?= =?us-ascii?Q?oCiWSKRLWU7YJIshKf0heJoES3iB8fqqtr+nonA?= =?us-ascii?Q?K2HjgSmNa+h1XfH0Y=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 96465 Subject: [ruby-core:96465] [Ruby master Feature#15973] Let Kernel#lambda always return a lambda 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 #15973 has been updated by Eregon (Benoit Daloze). On a related note I think we should also prohibit `define_method(&non_lambda)` because that confusingly treats the same block body differently (e.g., the same `return` in the code means something different). ---------------------------------------- Feature #15973: Let Kernel#lambda always return a lambda https://bugs.ruby-lang.org/issues/15973#change-83393 * Author: alanwu (Alan Wu) * Status: Assigned * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * Target version: 2.8 ---------------------------------------- When Kernel#lambda receives a Proc that is not a lambda, it returns it without modification. l propose to change `Kernel#lambda` so it always returns a lambda. Calling a method called lambda and having it do nothing in effect is not very intuitive. https://github.com/ruby/ruby/pull/2262 Judging from marcandre's investigation here: https://bugs.ruby-lang.org/issues/15620#note-1, changing the behavior should not cause much breakage, if any. This also happens to fix [Bug #15620] -- https://bugs.ruby-lang.org/