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#56682: Fix the long lines font locking related slowdowns Date: Sun, 14 Aug 2022 21:01:32 +0300 Message-ID: <837d3ak8lf.fsf@gnu.org> References: <92da07bd02941d5537e9@heytings.org> <5308e3b5-a160-17d7-77ee-b1d00acfa20d@yandex.ru> <92da07bd02a6cc861e1a@heytings.org> <837d3lzv8n.fsf@gnu.org> <2c8d6755-cfe2-6559-3fde-3fa30ffb411e@yandex.ru> <83mtcgy44k.fsf@gnu.org> <83k07jx5jn.fsf@gnu.org> <866e510d-a060-7daa-d002-97861d056fa7@yandex.ru> <1144021660321893@iva5-64778ce1ba26.qloud-c.yandex.net> <12348081660379417@sas2-a098efd00d24.qloud-c.yandex.net> <66bbbb95983414e79637@heytings.org> <66bbbb95983475c5f3b0@heytings.org> <0d67f253-c080-d750-c2cb-4a9591ff8c6c@yandex.ru> <83lerrl734.fsf@gnu.org> <83wnbbj7v4.fsf@gnu.org> <75c316c0-3346-e702-b114-41a7f899deb1@yandex.ru> <5900f20836ca3f305df8@heytings.org> <8ef8eaba-1add-e87e-247e-71888beaf1f8@yandex.ru> Mime-Version: 1.0 Content-Type: text/plain; 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Original-Received: from [87.69.77.57] (port=2255 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 1oNHvn-00060r-HK; Sun, 14 Aug 2022 14:01:48 -0400 In-Reply-To: <8ef8eaba-1add-e87e-247e-71888beaf1f8@yandex.ru> (message from Dmitry Gutov on Sun, 14 Aug 2022 20:51:14 +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:239686 Archived-At: > Date: Sun, 14 Aug 2022 20:51:14 +0300 > Cc: 56682@debbugs.gnu.org, Eli Zaretskii , > monnier@iro.umontreal.ca > From: Dmitry Gutov > > > If the conclusion is, after some reasonable effort, that there is no way > > to make syntax-ppss significantly faster in one way or another in such > > cases, and that there is no way to make font locking reasonably accurate > > even when it doesn't have access to the whole buffer, it might make > > sense to provide user options to fine-tune the behavior.  But we are not > > there yet. > > Both conclusions lead to removing the applications of narrowing from > handle_fontified_prop. We will not remove that, no. > So how about we either do that (defaulting to accurate font-lock), > or merge the branch I proposed, and then continue on to the more > complex developments? Please wait with requests to merge until I had time to review the branch. > Implementing the "font locking reasonably accurate even when it doesn't > have access to the whole buffer" would also have to be implemented in > Lisp, so narrowing outside of font-lock doesn't make sense. Cannot parse this, sorry. I guess some typo?