From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.bugs Subject: bug#56682: Fix the long lines font locking related slowdowns Date: Tue, 16 Aug 2022 16:58:15 +0300 Message-ID: <5e3c3081-f098-8140-c767-b895c32bf30b@yandex.ru> References: <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> <83wnb9hadb.fsf@gnu.org> <395454dd-7238-c5d0-e924-2f65a186baa7@yandex.ru> <83r11hh4pm.fsf@gnu.org> <3a1232a17b09ce88af40@heytings.org> <83edxghqg2.fsf@gnu.org> <325f95fd2bcc0b666b0b@heytings.org> <83edxgfi75.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; 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Tue, 16 Aug 2022 06:58:17 -0700 (PDT) Content-Language: en-US In-Reply-To: <83edxgfi75.fsf@gnu.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" Xref: news.gmane.io gmane.emacs.bugs:239945 Archived-At: On 16.08.2022 16:09, Eli Zaretskii wrote: >> From: Stefan Monnier >> Cc: Eli Zaretskii,56682@debbugs.gnu.org,dgutov@yandex.ru >> Date: Tue, 16 Aug 2022 09:07:59 -0400 >> >>> The way I see this is that Emacs is doing efforts to solve editing slowdowns >>> as best as possible, but that there is a "last mile" that cannot be solved >>> without the collaboration from major and minor modes. >> The locked narrowing prevents that "last mile", sadly. > Nonsense, it doesn't prevent any such things. > > Let's not exaggerate when we try to make a point, okay? Why nonsense? I've made the same point a bunch of times: arbitrary narrowing without regard for context stops any potential major-mode specific code from looking for a "safe position" which might be outside of that narrowing. The new variable (which will let us increase the font-lock narrowing radius) should get us 95% there, though.