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#45898: 27.1; wedged in redisplay again Date: Thu, 30 Jun 2022 21:35:36 +0300 Message-ID: <837d4yf18n.fsf@gnu.org> References: <46b65e3f-cf3d-a3f2-9a9a-100e58274ff6@jovi.net> <83h74t3k5u.fsf@gnu.org> <87tu8sx569.fsf@gnus.org> <83v8t6us8t.fsf@gnu.org> <87zgiinptk.fsf@gnus.org> <83mteiufih.fsf@gnu.org> <877d5kojbo.fsf@gnus.org> <83zgigu3e0.fsf@gnu.org> <500e4b9c69f2a90e7cf05b956178d71b@webmail.orcon.net.nz> <835yl3tnv3.fsf@gnu.org> <83iloyo0x7.fsf@gnu.org> <83mte5jukr.fsf@gnu.org> <837d57gbed.fsf@gnu.org> <83o7yicx3p.fsf@gnu.org> <83pmir5lwc.fsf@gnu.org> <83mtdu68cl.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32871"; mail-complaints-to="usenet@ciao.gmane.io" Cc: gerd.moellmann@gmail.com, psainty@orcon.net.nz, larsi@gnus.org, Emacs-hacker2018@jovi.net, 45898@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jun 30 20:36:14 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 1o6z1R-0008Qq-W3 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=1171 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 1o6z0i-0006v3-A0; Thu, 30 Jun 2022 14:35:28 -0400 In-Reply-To: (message from Stefan Monnier on Thu, 30 Jun 2022 13:22:29 -0400) 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:235746 Archived-At: > From: Stefan Monnier > Cc: gerd.moellmann@gmail.com, larsi@gnus.org, psainty@orcon.net.nz, > Emacs-hacker2018@jovi.net, 45898@debbugs.gnu.org > Date: Thu, 30 Jun 2022 13:22:29 -0400 > > > If so, I guess the expensive part is somewhere else. > > Unsuprisingly so: none of `C-n/C-p/C-v/...` involve font-lock or > jit-lock either during their operation or during the > subsequent redisplay phase in the current code: the one-line is all > fontified once and for all when you open the file and after that > font-lock is not involved any more (until you make an edit, that is). That's only true if max-redisplay-ticks is zero. > > I'd install this patch regardless, because it sounds like TRT not to > > let syntactic fontifications run amok this way. We do similar stuff > > in bidi.c for similar reasons. > > OK, I pushed it to `master`. The improvement is far from convincing, > but I tend to agree that it's "The Right Thing". Thanks.