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 27EC71F463 for ; Thu, 2 Jan 2020 18:10:13 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 7970F120A45; Fri, 3 Jan 2020 03:09:59 +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 6F2B212092C for ; Fri, 3 Jan 2020 03:09:57 +0900 (JST) Received: by filterdrecv-p3mdw1-56c97568b5-zwhxv with SMTP id filterdrecv-p3mdw1-56c97568b5-zwhxv-19-5E0E31FA-58 2020-01-02 18:10:02.453057462 +0000 UTC m=+1445215.350750158 Received: from herokuapp.com (unknown [3.89.196.85]) by ismtpd0103p1mdw1.sendgrid.net (SG) with ESMTP id wLBWSYasRgWqLGg7ddO33Q for ; Thu, 02 Jan 2020 18:10:02.390 +0000 (UTC) Date: Thu, 02 Jan 2020 18:10:02 +0000 (UTC) From: merch-redmine@jeremyevans.net Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 72295 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?BIM2My8OkVLS3nmWBJQvSEjh3+J6+AkNKSp53uq?= =?us-ascii?Q?4c53dzHXrqvhqBTNyfx7baB0YdWPO4qVwxWs+2M?= =?us-ascii?Q?5R7BNy4MfDsgK8Io+zgx4vne=2F8idf2lCwL7ipbP?= =?us-ascii?Q?65ijOB7Va=2FFfRJxQLz24SCsnk7OA1m7ef2Z3hrB?= =?us-ascii?Q?6g64GenASBQhe=2FfQo=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 96633 Subject: [ruby-core:96633] [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). puchuu (Andrew Aladjev) wrote: > @jeremyevans0, what will be the right way to bypass keyword arguments? As mentioned earlier, you should probably use `ruby2_keywords`. In this particular case, even if you don't want to support earlier Ruby versions, because you don't want the positional hash argument being interpreted as keywords by `non_kw`. ---------------------------------------- Bug #16473: New deprecated warning disallows keyword arguments bypassing https://bugs.ruby-lang.org/issues/16473#change-83603 * 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/