From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.bugs Subject: bug#57207: 29.0.50; Fontification is slow after e7b5912b23 (Improvements to long lines handling) Date: Sun, 21 Aug 2022 13:18:39 +0000 Message-ID: References: <87bksmx1j1.fsf@localhost> <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> <87wnb5wthm.fsf@gnus.org> <83pmgxfyc7.fsf@gnu.org> <87fshtwsys.fsf@gnus.org> <877d35wsdd.fsf@gnus.org> <83ilmpfwrf.fsf@gnu.org> <8735dtwrar.fsf@gnus.org> <83h729ft60.fsf@gnu.org> <87tu68v3uu.fsf@gnus.org> <83tu68e83u.fsf@gnu.org> <87fshsteqc.fsf@gnus.org> <87bksgte5e.fsf@gnus.org> <877d34tdwf.fsf@gnus.org> <83pmgwdxhh.fsf@gnu.org> <8735dstdhn.fsf@gnus.org> <37dd2827f52038e95791@heytings.org> <83wnb2ddxd.fsf@gnu.org> <37dd2827f57a3d664931@heytings.org> <37dd2827f52c6a150684@heytings.org> <83tu66cfnr.fsf@gnu.org> <83fshpdctx.fsf@gnu.org> <83bksddag4.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32467"; mail-complaints-to="usenet@ciao.gmane.io" Cc: larsi@gnus.org, 57207@debbugs.gnu.org, yantar92@gmail.com To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Aug 21 15:19:14 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 1oPkrC-0008Df-1W for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 21 Aug 2022 15:19:14 +0200 Original-Received: from localhost ([::1]:53368 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oPkrA-0000Ke-LM for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 21 Aug 2022 09:19:12 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47332) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oPkr0-0000KG-G8 for bug-gnu-emacs@gnu.org; Sun, 21 Aug 2022 09:19:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:44317) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oPkr0-0007f3-7o for bug-gnu-emacs@gnu.org; Sun, 21 Aug 2022 09:19:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oPkr0-00006w-2j for bug-gnu-emacs@gnu.org; Sun, 21 Aug 2022 09:19:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Gregory Heytings Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 21 Aug 2022 13:19:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 57207 X-GNU-PR-Package: emacs Original-Received: via spool by 57207-submit@debbugs.gnu.org id=B57207.1661087923391 (code B ref 57207); Sun, 21 Aug 2022 13:19:02 +0000 Original-Received: (at 57207) by debbugs.gnu.org; 21 Aug 2022 13:18:43 +0000 Original-Received: from localhost ([127.0.0.1]:34066 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oPkqg-00006F-U6 for submit@debbugs.gnu.org; Sun, 21 Aug 2022 09:18:43 -0400 Original-Received: from heytings.org ([95.142.160.155]:34332) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oPkqf-000067-Gz for 57207@debbugs.gnu.org; Sun, 21 Aug 2022 09:18:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1661087920; bh=sfe1Gc55j8JOOMBu3+jq4AvVHEl2d2JZszy2lUclLYU=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=BLQzUGNQv1gHsEZK4J8rblC/4aNqRTAxaTEmybmdnh2Aii66psbRErCLmgNCZotEM 7brz6VvG7emGxvEA2V1aDQs0GFaHJd6SbRXlsZNCzPEztFhFttGuTrXPuvQETQYt5f u1RCIBWys3B2c1zbPkRn0cI+3rvM+WXy0pwbQS20FBH2PQOG4bfHZ+6lWUpaPZ6/tl iu8+I+DjnYOHFY5dsvxdPmpwiIqjXQsZMR/uFEW1vbcF3+ltNgHCPvW01d7Un17DDm NVDVztuap5/sIFj8hzeRMFEjZ0aeUqi7nw9PKCm27HWZYLSgs88NA+zzcQZlovt7Oz 86oBhgoJ9CLnA== In-Reply-To: <83bksddag4.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:240313 Archived-At: >> Stefan said (IIUC) that it could be useful for Lisp programs, so it is >> now possible to use it anywhere (but the docstring says that it should >> be done sparingly). > > Which means that the code you installed on the branch will "undo" such > narrowing done from Lisp as well, doesn't it? That might not be what > the Lisp program which did that wanted. > I'm not sure I understand what you mean. What the modeline should display is the state of the "user" narrowing, not of a narrowing decided by a Lisp function. Changing the user narrowing from inside a hook function cannot be guaranteed to work, as far as I understand, as any other later hook function could change or undo that narrowing. > > It is better to do that higher, because not only those places in > decode_mode_spec may wish to access BEGV and ZV. Even in the mode-line > display there are :eval and :when. > Okay, I'll see what I can do. >> IMO we should just give it a try, it will always be possible to step >> back if it transpires that the cost is higher than the benefit. > > That's we are doing. But we could also do it the other way around: fix > the places we know are problematic in Lisp, and then wait for enough > such problems to appear elsewhere. > Indeed. As I said, I don't know which path is better. My feeling (which could again be wrong) is that the current one is safer from a "responsive Emacs" viewpoint.