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,UNPARSEABLE_RELAY 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 9A1361F5AE for ; Sat, 1 May 2021 12:50:31 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 72BEE12120B; Sat, 1 May 2021 21:49:22 +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 40B5C12120A for ; Sat, 1 May 2021 21:49:21 +0900 (JST) Received: by filterdrecv-6bd97c8c5f-nwkbq with SMTP id filterdrecv-6bd97c8c5f-nwkbq-1-608D4E83-45 2021-05-01 12:50:11.586715181 +0000 UTC m=+228669.296705286 Received: from herokuapp.com (unknown) by geopod-ismtpd-5-1 (SG) with ESMTP id 00bUdZEvQRGSxTPexBBfXg for ; Sat, 01 May 2021 12:50:11.494 +0000 (UTC) Date: Sat, 01 May 2021 12:50:11 +0000 (UTC) From: sawadatsuyoshi@gmail.com Message-ID: References: Mime-Version: 1.0 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Bug X-Redmine-Issue-Id: 17774 X-Redmine-Issue-Author: Davidebyzero X-Redmine-Sender: sawa 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-Redmine-MailingListIntegration-Message-Ids: 79729 X-SG-EID: =?us-ascii?Q?jFXA8Rt481sXUUIO9tYW1AJlMOZdNdlSw=2F5TfLCefGtxsITsOTvzEdAdmk0DCk?= =?us-ascii?Q?s=2Faee4+0LDmhdidV0PCC0vYJ47cbpwABThprwPk?= =?us-ascii?Q?ujxDJGl1SqdoQ0nNr=2FT+csFUJL9YiVmBMnQy2Kp?= =?us-ascii?Q?+IiXxWgbBiHmKbo4kghbDM4BXl9LPn9W7OnNp0f?= =?us-ascii?Q?neTe7F7hQ6gC26hLdkoN9TxrIp5qxwoxtIiUXx4?= =?us-ascii?Q?p1CjabsPEldcJ27vI=3D?= To: ruby-core@ruby-lang.org X-Entity-ID: b/2+PoftWZ6GuOu3b0IycA== X-ML-Name: ruby-core X-Mail-Count: 103682 Subject: [ruby-core:103682] [Ruby master Bug#17774] Quantified empty group causes regex to fail 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="utf-8" Content-Transfer-Encoding: base64 Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" SXNzdWUgIzE3Nzc0IGhhcyBiZWVuIHVwZGF0ZWQgYnkgc2F3YSAoVHN1eW9zaGkgU2F3YWRhKS4N Cg0KDQp3YW5hYmUgKF8gd2FuYWJlKSB3cm90ZSBpbiAjbm90ZS0yOg0KPiAuLi4gT25pZ3VydW1h LCBhIGRlcml2YXRpdmUgb2YgT25pZ21vDQoNCkkgYmVsaWV2ZSBpdCBpcyB0aGUgb3RoZXIgd2F5 IGFyb3VuZC4NCg0KDQotLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tDQpC dWcgIzE3Nzc0OiBRdWFudGlmaWVkIGVtcHR5IGdyb3VwIGNhdXNlcyByZWdleCB0byBmYWlsDQpo dHRwczovL2J1Z3MucnVieS1sYW5nLm9yZy9pc3N1ZXMvMTc3NzQjY2hhbmdlLTkxNzc3DQoNCiog QXV0aG9yOiBEYXZpZGVieXplcm8gKERhdmlkIEVsbHN3b3J0aCkNCiogU3RhdHVzOiBPcGVuDQoq IFByaW9yaXR5OiBOb3JtYWwNCiogcnVieSAtdjogcnVieSAyLjcuMnAxMzcgKDIwMjAtMTAtMDEg cmV2aXNpb24gNTQ0NWUwNDM1MikgW3g4Nl82NC1tc3lzXQ0KKiBCYWNrcG9ydDogMi41OiBVTktO T1dOLCAyLjY6IFVOS05PV04sIDIuNzogVU5LTk9XTiwgMy4wOiBVTktOT1dODQotLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tDQpUaGUgcmVnZXggYF4oKHgqKSg/PVwyJCkp KngkYCBtYXRjaGVzIHBvd2VycyBvZiAyIGluIHVuYXJ5LCBleHByZXNzZWQgYXMgc3RyaW5ncyBv ZiBgeGAgY2hhcmFjdGVycyB3aG9zZSBsZW5ndGggaXMgdGhlIG51bWJlci4NCg0KQWRkaW5nIGFu IGVtcHR5IGdyb3VwIGAoKWAgaW4gdGhlIG1pZGRsZSBvZiBpdCBzaG91bGQgaGF2ZSBubyBlZmZl Y3Qgb24gaXRzIG9wZXJhdGlvbiwgYW5kIGluZGVlZCBpdCBkb2VzIG5vdC4gYF4oKHgqKSgpKD89 XDIkKSkqeCRgIHN0aWxsIG1hdGNoZXMgcG93ZXJzIG9mIDIganVzdCBmaW5lLiAgDQpRdWFudGlm eWluZyB0aGF0IGVtcHR5IGdyb3VwLCBgKCl7NH1gLCBzaG91bGQgc3RpbGwgaGF2ZSBubyBlZmZl Y3QuIEFuZCBpbmRlZWQsIGBeKCh4KikoKXs0fSg/PVwyJCkpKngkYCBzdGlsbCBtYXRjaGVzIHBv d2VycyBvZiAyLiBCdXQgcXVhbnRpZnkgdGhhdCB0byBgKCl7NX1gLCBhbmQgc3VkZGVubHkgaXQg ZmFpbHMuDQoNClRoZSBmb2xsb3dpbmcgY29tbWFuZCBsaW5lIHNob3VsZCBwcmludCBgMWAsIGJ1 dCBpbnN0ZWFkIHByaW50cyBub3RoaW5nOg0KYGBgDQpydWJ5IC1lICdwcmludCAxIGlmICJ4Iioz MiA9fiAvXigoeCopKCl7NX0oPz1cMiQpKSp4JC8nDQpgYGANCkhvd2V2ZXIgdGhpcyBvbmUgZG9l cyBwcmludCBgMWA6DQpgYGANCnJ1YnkgLWUgJ3ByaW50IDEgaWYgIngiKjMyID1+IC9eKCh4Kiko KXs0fSg/PVwyJCkpKngkLycNCmBgYA0KDQpCdWcgZm91bmQgdG8gb2NjdXIgb24gW1RyeSBJdCBP bmxpbmVdKGh0dHBzOi8vdGlvLnJ1bi8pOiBgcnVieSAyLjUuNXAxNTcgKDIwMTktMDMtMTUgcmV2 aXNpb24gNjcyNjApIFt4ODZfNjQtbGludXhdYA0KQnVnIGNvbmZpcm1lZCB0byBoYXBwZW4gb24g bXkgb3duIG1hY2hpbmU6IGBydWJ5IDIuNy4ycDEzNyAoMjAyMC0xMC0wMSByZXZpc2lvbiA1NDQ1 ZTA0MzUyKSBbeDg2XzY0LW1zeXNdYA0KDQpTb2x2aW5nIHRoZSBjaGFsbGVuZ2UgW0lzIHRoYXQg bnVtYmVyIGEgVHdvIEJpdCBOdW1iZXLihKLvuI8/XShodHRwczovL2NvZGVnb2xmLnN0YWNrZXhj aGFuZ2UuY29tL3F1ZXN0aW9ucy8yMTE4NDAvaXMtdGhhdC1udW1iZXItYS10d28tYml0LW51bWJl ciVlZiViOCU4Zi8yMjI3OTIjMjIyNzkyKSBvbiBDb2RlIEdvbGYgU3RhY2sgRXhjaGFuZ2UgaXMg d2hhdCBsZWQgbWUgdG8gZGlzY292ZXIgdGhpcyBidWcuDQoNCg0KDQotLSANCmh0dHBzOi8vYnVn cy5ydWJ5LWxhbmcub3JnLw0K