From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#57207: 29.0.50; Fontification is slow after e7b5912b23 (Improvements to long lines handling) Date: Thu, 18 Aug 2022 16:33:01 +0300 Message-ID: <83czcxbrsi.fsf@gnu.org> References: <87bksmx1j1.fsf@localhost> <83lerqkd2u.fsf@gnu.org> <87o7wl4tsv.fsf@localhost> <87r11h90zw.fsf@gnus.org> <8335dxiu6m.fsf@gnu.org> <87y1vnjgmn.fsf@gnus.org> <83y1vncbq5.fsf@gnu.org> <87r11fgi7h.fsf@gnus.org> <83sflvc85y.fsf@gnu.org> <87h729902w.fsf@gnus.org> <83edxdbs96.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31989"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 57207@debbugs.gnu.org, yantar92@gmail.com To: larsi@gnus.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Aug 18 15:35:03 2022 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 1oOffq-00086V-Kf for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=3853 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oOfe0-0006u6-SB; Thu, 18 Aug 2022 09:33:09 -0400 In-Reply-To: <83edxdbs96.fsf@gnu.org> (message from Eli Zaretskii on Thu, 18 Aug 2022 16:23:01 +0300) 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:240152 Archived-At: > Cc: 57207@debbugs.gnu.org, yantar92@gmail.com > Date: Thu, 18 Aug 2022 16:23:01 +0300 > From: Eli Zaretskii > > > From: Lars Ingebrigtsen > > Cc: yantar92@gmail.com, 57207@debbugs.gnu.org > > Date: Thu, 18 Aug 2022 15:02:15 +0200 > > > > If I do the following in this running Emacs: > > > > C-x C-f /tmp/empty-file.txt > > M-: (insert (propertize (make-string 20000 ?x) 'display "foo")) > > > > Then hit RET a couple of times, and then type any key (like `d'), the > > mode line starts saying "Narrow". If I hit it again, it switches off, > > and then hitting it again switches it on again. > > Can you attach a debugger to this session, and produce a C and Lisp > backtrace from Fnarrow_to_region and Fwiden when you do the above? Also, do you see any error messages in *Messages*?