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: Major modes using `widen' is a good, even essential, programming practice. Date: Mon, 08 Aug 2022 14:49:01 +0300 Message-ID: <8335e7vtua.fsf@gnu.org> References: <6ae35c9306ade07b4c45@heytings.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18204"; mail-complaints-to="usenet@ciao.gmane.io" Cc: monnier@iro.umontreal.ca, gregory@heytings.org, emacs-devel@gnu.org To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Aug 08 13:50:55 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 1oL1Ha-0004Zj-Rl for ged-emacs-devel@m.gmane-mx.org; Mon, 08 Aug 2022 13:50:55 +0200 Original-Received: from localhost ([::1]:46238 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oL1HZ-0008LA-VT for ged-emacs-devel@m.gmane-mx.org; Mon, 08 Aug 2022 07:50:53 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39066) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oL1Fz-0006x7-M9 for emacs-devel@gnu.org; Mon, 08 Aug 2022 07:49:15 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:43586) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oL1Fz-0006Wg-D8; Mon, 08 Aug 2022 07:49:15 -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=IQxdPyTbvjX/Wdx4M8D1DUcPD56OmwkI0Tk5r8iHEJs=; b=deRMkP/QcO6e RwZLT49Oo0BTaFgUN3Y6sqTMYQzITJ/cZgHjKJzlA/zXRQiPWYphuWy9Svpznwuf8CBRgfXVEIUpS PeIJ/WrbQhdtGCCOR/sr5cISB5bs82a4nFQel/Fk/BXqPNk1Un9HeKUrbqbQeWUIYDVTtbubKnaSz mNKL8KF6ZzoJ7uUhY4BJqi7Hp1nik41cRSKwnSGbCqfK5Sec6Mzwi9Iih/S2O+SQgTXAwTFocclbr 77Hr2Ba2aEPRNqMGaO4gCgCce08Z5GkZkDOE3RrlYeRzyROiTpaIDoQfnhwM2Gm0G/GAtCI7qXAmN 2XwV9UPelKIw88AwPzDrKw==; Original-Received: from [87.69.77.57] (port=2400 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 1oL1Fy-0000M7-RL; Mon, 08 Aug 2022 07:49:15 -0400 In-Reply-To: (message from Alan Mackenzie on Mon, 8 Aug 2022 10:38:36 +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:293258 Archived-At: > Date: Mon, 8 Aug 2022 10:38:36 +0000 > Cc: Gregory Heytings , emacs-devel@gnu.org > From: Alan Mackenzie > > It's also worth pointing out that _looking_ at text, whatever that means > exactly, is an order of magnitude faster than _fontifying_ that text. I'm quite sure this is not why major modes (and CC Mode in particular) widen. They must do something entirely non-trivial at BOB.