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.devel Subject: Re: New optimisations for long raw strings in C++ Mode. Date: Wed, 10 Aug 2022 19:58:31 +0300 Message-ID: <83a68cqbm0.fsf@gnu.org> References: <87k07hxwe9.fsf@gnus.org> <87fsi5xw9l.fsf@gnus.org> <83wnbhtlzb.fsf@gnu.org> <703c2351d96919276449@heytings.org> <83o7wsqlcm.fsf@gnu.org> <83edxoqcnl.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23971"; mail-complaints-to="usenet@ciao.gmane.io" Cc: gregory@heytings.org, larsi@gnus.org, emacs-devel@gnu.org To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Aug 10 19:03:08 2022 Return-path: Envelope-to: ged-emacs-devel@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 1oLp6p-0005rQ-Oq for ged-emacs-devel@m.gmane-mx.org; Wed, 10 Aug 2022 19:03:07 +0200 Original-Received: from localhost ([::1]:32984 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oLp6o-0007Rt-8F for ged-emacs-devel@m.gmane-mx.org; Wed, 10 Aug 2022 13:03:06 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50294) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oLp2W-00058C-S2 for emacs-devel@gnu.org; Wed, 10 Aug 2022 12:58:42 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:37298) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oLp2W-0007oQ-3N; Wed, 10 Aug 2022 12:58:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=s3iV1/SuHkvSM2Hzw2p71UBYyLDNCeqYyU3m70T2bqA=; b=AujXD+YR/RNR 8Esxsk8TN3n9u55jp61xnJybg2wyVZPitn6vOqUr4u7aqALRq1G7tf/CDR3mwmgR6ucxKLMvXxPLU o9dz+PdLRutC7tLKvSzOljYTCH0nddoquH6wrbyuw0djGLg2QdLcoVJt6qfIXX8IJkGzulUYYqjbp rT5FkI2XLebPwRViZKqy7+scvhMUln1Tdr0KSrlS2HGm+pILM1mLQ5QFS8u3KyxFZSTyz0vfkmrnU sqRI8XGAnKVjMlqrXGD/UUCWkOFi5tacrV0yXdI2mvwkAG5NPlsZcebMRzgBkiC60LUgkTGJJ/NoI 6D6yAyNCcDERdkmEg90RhQ==; Original-Received: from [87.69.77.57] (port=3602 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 1oLp2V-0008Ec-Jg; Wed, 10 Aug 2022 12:58:39 -0400 In-Reply-To: (message from Alan Mackenzie on Wed, 10 Aug 2022 16:50:43 +0000) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:293359 Archived-At: > Date: Wed, 10 Aug 2022 16:50:43 +0000 > Cc: gregory@heytings.org, larsi@gnus.org, emacs-devel@gnu.org > From: Alan Mackenzie > > Hello, Eli. > > On Wed, Aug 10, 2022 at 19:35:58 +0300, Eli Zaretskii wrote: > > > Date: Wed, 10 Aug 2022 16:23:27 +0000 > > > Cc: gregory@heytings.org, larsi@gnus.org, emacs-devel@gnu.org > > > From: Alan Mackenzie > > > > CC Mode has not been doing anything wrong in accessing the buffers it > > > controls. The idea that one should access only the characters in the > > > (BEG END) supplied by fontification_functions (and jit-lock) is false. > > > It has no basis in rationality. And in fact, standard font-locking > > > itself accesses (via syntax-ppss) all character positions from BOB to > > > BEG. > > > You seem to disagree with a major idea of the design of the Emacs > > display engine. > > I don't think I do. I think you mean the idea of lazy fontification, > though you haven't been specific. No, I mean the idea that redisplay processes only a small amount of buffer text around the window. > This fontification is all about fontifying restricted areas of the > buffer. There is no principle that one shouldn't look at distant > portions of the buffer as need be, to facilitate the fontification of > the restricted area. You are contradicting yourself. > This is absolutely necessary correctly to fontify (long) strings and > comments, for example. Only if you assume the most simplistic processing.