From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely Date: Thu, 15 Sep 2022 13:20:51 +0800 Message-ID: <87wna5xlfw.fsf@yahoo.com> References: <834jx93n4p.fsf@gnu.org> <87y1ul501n.fsf@gnus.org> Reply-To: Po Lu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16691"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) Cc: Eli Zaretskii , 57804@debbugs.gnu.org, Paul Pogonyshev To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Sep 15 07:22:12 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from [209.51.188.17] (helo=lists.gnu.org) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oYhKF-000480-O5 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Hermes SMTP Server) with ESMTPA ID 74fdf9aefe6f0f28a4f64124202edc8f; Thu, 15 Sep 2022 05:20:57 +0000 (UTC) In-Reply-To: <87y1ul501n.fsf@gnus.org> (Lars Ingebrigtsen's message of "Wed, 14 Sep 2022 19:38:12 +0200") X-Mailer: WebService/1.1.20612 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo 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" Xref: news.gmane.io gmane.emacs.bugs:242553 Archived-At: Lars Ingebrigtsen writes: > Eli Zaretskii writes: > >> This case is exactly one of those which I think we shouldn't try to >> fix, because it's the case of "buggy Lisp program", a.k.a. "don't do >> that". There's no reason for any useful Lisp program to have an >> infloop like this: >> >>> (while t >>> "whoopsie") > > You've never accidentally put an infloop into a font locking function? > Then you've been very lucky. > > We should definitely fix this is we can. Why isn't jit-lock-debug-mode an option?