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=-4.1 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,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 0C1A71F453 for ; Tue, 30 Apr 2019 17:06:23 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 6BAE1120A7F; Wed, 1 May 2019 02:06:17 +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 D8C3A12082F for ; Wed, 1 May 2019 02:06:14 +0900 (JST) Received: by filter0101p3las1.sendgrid.net with SMTP id filter0101p3las1-6852-5CC88080-34 2019-04-30 17:06:08.738242972 +0000 UTC m=+420650.814577821 Received: from herokuapp.com (unknown [3.86.82.84]) by ismtpd0038p1mdw1.sendgrid.net (SG) with ESMTP id BWyoqPa_RVOaP-rGgaHPww for ; Tue, 30 Apr 2019 17:06:08.288 +0000 (UTC) Date: Tue, 30 Apr 2019 17:06:13 +0000 (UTC) From: mame@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 67985 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 15745 X-Redmine-Issue-Author: koic X-Redmine-Sender: mame 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?EJh2gqwnyqXtd++xo=2FinyA1V0bXouTB4FkWnzNiKb4=2FJ+7fpHG0AVljewU=2FtIL?= =?us-ascii?Q?wKIUbrPsIbp7ILRO2bYtMITPL1sZQcy42dxJFNQ?= =?us-ascii?Q?SvT59K=2FEXLDZvqxcm136TABXyz16JRtmTZwyWYB?= =?us-ascii?Q?WM=2F3KiJEUa3cIMMs3Bz5FTejvRJsAJ71qHvhBVN?= =?us-ascii?Q?npOtz1lPI7B5TFb2rSybBnQvLSoa7MgjPkw=3D=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 92502 Subject: [ruby-core:92502] [Ruby trunk Bug#15745] There is no symmetry in the beginless range and the endless range using `Range#inspect` 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 #15745 has been updated by mame (Yusuke Endoh). Oops, I'm sorry, parentheses are not rendered in the result of `inspect`. Let me rephrase and include (3): (0) Keep the current behavior: `p (1..) #=> 1..`, `p (..1) #=> nil..1`, and `p (nil..nil) #=> nil..`. (1) Make all cases explicit: `p (1..) #=> 1..nil`, `p (..1) #=> nil..1`, and `p (nil..nil) #=> nil..nil`. (2) Omit all `nil`s except `(nil..nil)`: `p (1..) #=> 1..`, `p (..1) #=> ..1`, and `p (nil..nil) #=> nil..nil`. (3) Force to omit all `nil`s: `p (1..) #=> 1..`, `p (..1) #=> ..1`, and `p (nil..nil) #=> ..`. I'd like to avoid "don't care". Even if we don't care, we need to choose one of them. ---------------------------------------- Bug #15745: There is no symmetry in the beginless range and the endless range using `Range#inspect` https://bugs.ruby-lang.org/issues/15745#change-77863 * Author: koic (Koichi ITO) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.7.0dev (2019-04-03 trunk 67423) [x86_64-darwin17] * Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- The following commit introduces beginless range. https://github.com/ruby/ruby/commit/95f7992b89efd35de6b28ac095c4d3477019c583 ``` % ruby -v ruby 2.7.0dev (2019-04-03 trunk 67423) [x86_64-darwin17] ``` There is no symmetry with endless range when using `Range#inspect` method. ``` (1..).inspect # => "1.." (..5).inspect # => "nil..5" ``` How about unifying whether it represents `nil`? -- https://bugs.ruby-lang.org/