From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.bugs Subject: bug#61514: 30.0.50; sadistically long xml line hangs emacs Date: Sun, 19 Feb 2023 23:58:41 +0000 Message-ID: <886c06e50e876183758c@heytings.org> References: <87lel0c65v.fsf@everybody.org> <838rgvymcd.fsf@gnu.org> <886c06e50e9cfacb7954@heytings.org> <83h6vixik1.fsf@gnu.org> <886c06e50e707ab83560@heytings.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19758"; mail-complaints-to="usenet@ciao.gmane.io" Cc: mah@everybody.org, 61514@debbugs.gnu.org, Stefan Monnier To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Feb 20 00:59:15 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pTtaN-0004zZ-4s for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 20 Feb 2023 00:59:15 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pTtaD-00054s-Mt; Sun, 19 Feb 2023 18:59:05 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pTtaB-00053K-MD for bug-gnu-emacs@gnu.org; Sun, 19 Feb 2023 18:59:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pTtaB-00005Z-83 for bug-gnu-emacs@gnu.org; Sun, 19 Feb 2023 18:59:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1pTtaA-0003OF-9L for bug-gnu-emacs@gnu.org; Sun, 19 Feb 2023 18:59:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Gregory Heytings Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 19 Feb 2023 23:59:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 61514 X-GNU-PR-Package: emacs Original-Received: via spool by 61514-submit@debbugs.gnu.org id=B61514.167685112313004 (code B ref 61514); Sun, 19 Feb 2023 23:59:02 +0000 Original-Received: (at 61514) by debbugs.gnu.org; 19 Feb 2023 23:58:43 +0000 Original-Received: from localhost ([127.0.0.1]:49978 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pTtZr-0003Ng-HE for submit@debbugs.gnu.org; Sun, 19 Feb 2023 18:58:43 -0500 Original-Received: from heytings.org ([95.142.160.155]:36186) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pTtZq-0003NZ-II for 61514@debbugs.gnu.org; Sun, 19 Feb 2023 18:58:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1676851121; bh=4gjsTz6OinaryPJvolm25ocBTPiMhZ4gP68voCMXWzw=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=vbwTxdf+JkVBHx15uT06SCFeutR5HrvnJUUdkXhOheVadkVYJNZGU9+Hsr0CJyboh 4z1kipYkYlFgB+AM3XheFSte9Crh7RtTtaFS7QB6VHJFFtK5WSTdax9LwkQSIFowV9 jP1gAw8gKfeBZeHdzeEqMzn5O97UxP5fHUXbPn+bSpKQwPp3cWC7SApwJDps25Ztdd tXkk21AMjuSX9oI7Xl+z50VgvEkmQMSv9GT6bhe6fbQwQDCUQOCW6orbUFyudMh9mX bUuAvyideCh31e7JjUlUjcMrKlFR1xYdrHhlavxGoSVw4bBuMndwIX504KKQCy3dKz 2OMkKxH9DaZ4w== In-Reply-To: <886c06e50e707ab83560@heytings.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:256121 Archived-At: > > Lowering emacs_re_max_failures just makes the regexp engine fail > earlier, because there is not enough room in the failure stack. In a > sense it is better to fail earlier, but to do that in all cases, we > would have to lower emacs_re_max_failures say to 10000, which I guess > wouldn't be good because the it would fail too much. > BTW, this makes me wonder why emacs_re_max_failures is not accessible from Elisp. I think it would be very useful, if only for debugging purposes. And perhaps let-binding it to a lower value around some potentially (or actually) problematic regexps would be a good way to prevent or fix bugs such as the current one.