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=-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 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 D9BC81F463 for ; Thu, 2 Jan 2020 17:31:25 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id F018B120A2B; Fri, 3 Jan 2020 02:31:12 +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 AC3BE120A28 for ; Fri, 3 Jan 2020 02:31:10 +0900 (JST) Received: by filterdrecv-p3mdw1-56c97568b5-fkvrs with SMTP id filterdrecv-p3mdw1-56c97568b5-fkvrs-20-5E0E28E3-1E 2020-01-02 17:31:15.225272673 +0000 UTC m=+1442886.599838833 Received: from herokuapp.com (unknown [3.89.196.85]) by ismtpd0115p1mdw1.sendgrid.net (SG) with ESMTP id UMYD3RvUQUi7yWb51bTmfg for ; Thu, 02 Jan 2020 17:31:15.152 +0000 (UTC) Date: Thu, 02 Jan 2020 17:31:15 +0000 (UTC) From: merch-redmine@jeremyevans.net Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 72293 X-Redmine-Project: ruby-master X-Redmine-Issue-Id: 16473 X-Redmine-Issue-Author: puchuu X-Redmine-Sender: jeremyevans0 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?RVE3t853K5scBhbmJHUzZTFFeVC=2FZSUmHZ0Dc+26wcEi2CTgsF1oz0wTSSxGGN?= =?us-ascii?Q?BI6eZtWzs+jHvoarwdJrT=2FXlqTmbWSQ+9pjiR6Z?= =?us-ascii?Q?n89qXO8BuAJ8AEw0iNXeiaQgGXdEqtw2V=2FizmGB?= =?us-ascii?Q?ZvonL7WtyKH+xljbZq39vACw+kjO5FgU0t50JQF?= =?us-ascii?Q?Ql63xBpBSPoFPruXwvBMOV8x8jDwzn57uv7r7aZ?= =?us-ascii?Q?x6rXc5z7knk3uXxag=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 96631 Subject: [ruby-core:96631] [Ruby master Bug#16473] New deprecated warning disallows keyword arguments bypassing 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 #16473 has been updated by jeremyevans0 (Jeremy Evans). Status changed from Open to Rejected This behavior is expected. The positional hash argument is converted to keyword arguments when `kw` is called. That is not going to work in Ruby 3 (see #14183), hence the warning. For delegating argument to a method that accepts keywords, you should probably use `ruby2_keywords` (if you also need to support older ruby versions): ```ruby ruby2_keywords :non_kw if respond_to?(:ruby2_keywords, true) ``` ---------------------------------------- Bug #16473: New deprecated warning disallows keyword arguments bypassing https://bugs.ruby-lang.org/issues/16473#change-83601 * Author: puchuu (Andrew Aladjev) * Status: Rejected * Priority: Normal * Assignee: * Target version: * ruby -v: 2.7.0 * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- Hello. I see that ruby 2.7.0 prints unnecessary deprecated warning during arguments bypassing. ```ruby def kw(a: 1) puts "kw #{a}" end def non_kw(a = {}, *args) puts "non kw #{a}" kw *args end non_kw({ :a => 2 }, :a => 2) non_kw({ :a => 3 }) non_kw ``` The right output is: ``` non kw {:a=>2} kw 2 non kw {:a=>3} kw 1 non kw {} kw 1 ``` Ruby 2.7.0 provides deprecated warning: ```ruby warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call ``` `*args` is bypassing arguments without any conversion. It looks like ruby converts last hash to keywords and than converts it back to hash. I think it is a bug. -- https://bugs.ruby-lang.org/