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: AS22989 209.51.188.0/24 X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id B2FC71F5AE for ; Wed, 16 Jun 2021 10:13:52 +0000 (UTC) Received: from localhost ([::1]:40598 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ltSYR-0003q9-Gh for normalperson@yhbt.net; Wed, 16 Jun 2021 06:13:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54378) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ltSYO-0003ph-EY for bug-gnulib@gnu.org; Wed, 16 Jun 2021 06:13:48 -0400 Received: from vmicros1.altlinux.org ([194.107.17.57]:41480) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ltSYM-0007td-Ki for bug-gnulib@gnu.org; Wed, 16 Jun 2021 06:13:48 -0400 Received: from mua.local.altlinux.org (mua.local.altlinux.org [192.168.1.14]) by vmicros1.altlinux.org (Postfix) with ESMTP id 715EA72C8B0; Wed, 16 Jun 2021 13:13:39 +0300 (MSK) Received: by mua.local.altlinux.org (Postfix, from userid 508) id 617147CC8B5; Wed, 16 Jun 2021 13:13:39 +0300 (MSK) Date: Wed, 16 Jun 2021 13:13:39 +0300 From: "Dmitry V. Levin" To: Egor Ignatov Subject: Re: [PATCH] regex: fix backreference matching Message-ID: <20210616101339.GA8379@altlinux.org> References: <20210607011027.GA18724@altlinux.org> <20210616094615.186681-1-egori@altlinux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210616094615.186681-1-egori@altlinux.org> Received-SPF: pass client-ip=194.107.17.57; envelope-from=ldv@altlinux.org; helo=vmicros1.altlinux.org X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: bug-gnulib@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Gnulib discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Eggert , bug-gnulib@gnu.org Errors-To: bug-gnulib-bounces+normalperson=yhbt.net@gnu.org Sender: "bug-gnulib" On Wed, Jun 16, 2021 at 12:46:15PM +0300, Egor Ignatov wrote: > This fixes a bug described in 70b673eb7. [...] > - { "^(a*)*(.)", "ab", REG_EXTENDED, 3, { { 0, 2 }, { 0, 1 }, { 1, 2 } } }, > + { "^(a*)*(.)", "ab", REG_EXTENDED, 3, { { 0, 2 }, { 1, 1 }, { 1, 2 } } }, Sorry, but how this could be correct? Since the expression consists of two consequent parts, the whole match should also consist of two consequent substring matches, shouldn't it? -- ldv