From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.bugs Subject: bug#34910: 27.0.50; Too much matching reentrancy Date: Sat, 30 Mar 2019 14:05:50 +0100 Message-ID: <1967BB79-8AD9-41F7-B046-0ECC787FDC3C@acm.org> References: <834l7zuw4x.fsf@gnu.org> <443195D9-DFEB-4E67-AEFE-556C3D900113@acm.org> <8336njuqrd.fsf@gnu.org> <66172e4bc6e70e23d7bf3175a5c83519a43c1a66.camel@acm.org> <83sgv4iu9d.fsf@gnu.org> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.8\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="194598"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 34910@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Mar 30 14:07:23 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hADhj-000oUK-2P for geb-bug-gnu-emacs@m.gmane.org; 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Sat, 30 Mar 2019 09:06:00 -0400 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1553951154; bh=sF+g5saYQ3kQP6rbfgLxm38jib8jyGFFGmj/He9/56E=; h=Subject:From:In-Reply-To:Date:Cc:References:To:From; b=aVZTMCK3RbIaOHwCNoMoSwAG+DOk5RD+7JnUnhdbDWMD9GwRnw4a5HWhDwa82kI4D vCgeaRxwKKK2p6e5M1q7njno0EKWzTMO4j4BKljMuCUIH4211oMA/Zp+daCrQS15Jk xFfHgH2/wrRwDRz76q3GfdqBOVpXOa0hX67OYGOo= Feedback-ID: mattiase@acm.or Original-Received: from [192.168.1.64] (c-e636e253.032-75-73746f71.bbcust.telenor.se [83.226.54.230]) (authenticated bits=0) by mail33c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id x2UD5pYi004876; Sat, 30 Mar 2019 13:05:53 +0000 In-Reply-To: X-Mailer: Apple Mail (2.3445.104.8) X-CTCH-RefID: str=0001.0A0B020E.5C9F69B2.000A, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.3 cv=eOw9ckh1 c=1 sm=1 tr=0 a=M+GU/qJco4WXjv8D6jB2IA==:117 a=M+GU/qJco4WXjv8D6jB2IA==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=kj9zAlcOel0A:10 a=iRZporoAAAAA:8 a=UpTlwGpfy3z3VvQmCH0A:9 a=CjuIK1q_8ugA:10 a=NOBgFS-JBQ2l-kSd6-zu:22 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:156945 Archived-At: 30 mars 2019 kl. 13.55 skrev Stefan Monnier : >=20 > It was probably just an oversight, because whether we're searching > within strings or within buffers the same problems appear with \{N\} > repetitions (where the counter is stored directly inside the > regexp-byte-code) and with on-the-fly strength-reduction (where we > replace some byte-code with cheaper ones (where applicable) on the = first > pass through the regexp). Is the reentrancy just in preparation for future needs, or is it = possible to re-enter the regexp code right now? If the latter, we may just as well fix the string case here and now; = otherwise, I'd like to close the bug.