From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#29279: Sharing the margins Date: Mon, 13 Nov 2017 21:22:49 +0200 Message-ID: <83ineekmpi.fsf@gnu.org> References: <0a54e927-cab1-1f1d-4996-85bb36949a33@yandex.ru> <834lpymbga.fsf@gnu.org> <83po8mkptj.fsf@gnu.org> <56131da6-14fb-d669-f69a-72fd2e696d5c@yandex.ru> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1510600989 18962 195.159.176.226 (13 Nov 2017 19:23:09 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 13 Nov 2017 19:23:09 +0000 (UTC) Cc: 29279@debbugs.gnu.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Nov 13 20:23:05 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEKK0-0004bn-Oo for geb-bug-gnu-emacs@m.gmane.org; Mon, 13 Nov 2017 20:23:04 +0100 Original-Received: from localhost ([::1]:56004 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eEKK7-0004s5-Tm for geb-bug-gnu-emacs@m.gmane.org; Mon, 13 Nov 2017 14:23:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:41754) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eEKK1-0004rx-Af for bug-gnu-emacs@gnu.org; Mon, 13 Nov 2017 14:23:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eEKJy-0007U1-6Q for bug-gnu-emacs@gnu.org; Mon, 13 Nov 2017 14:23:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:58426) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eEKJy-0007Tj-2p for bug-gnu-emacs@gnu.org; Mon, 13 Nov 2017 14:23:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1eEKJx-0005Z8-Sd for bug-gnu-emacs@gnu.org; Mon, 13 Nov 2017 14:23:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 13 Nov 2017 19:23:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 29279 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 29279-submit@debbugs.gnu.org id=B29279.151060097421367 (code B ref 29279); Mon, 13 Nov 2017 19:23:01 +0000 Original-Received: (at 29279) by debbugs.gnu.org; 13 Nov 2017 19:22:54 +0000 Original-Received: from localhost ([127.0.0.1]:38874 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEKJq-0005YZ-3G for submit@debbugs.gnu.org; Mon, 13 Nov 2017 14:22:54 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:50708) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEKJo-0005YL-42 for 29279@debbugs.gnu.org; Mon, 13 Nov 2017 14:22:52 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eEKJf-0007Ot-Ul for 29279@debbugs.gnu.org; Mon, 13 Nov 2017 14:22:47 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:41060) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eEKJf-0007Op-Rs; Mon, 13 Nov 2017 14:22:43 -0500 Original-Received: from [176.228.60.248] (port=2101 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1eEKJf-0002yW-3P; Mon, 13 Nov 2017 14:22:43 -0500 In-reply-to: <56131da6-14fb-d669-f69a-72fd2e696d5c@yandex.ru> (message from Dmitry Gutov on Mon, 13 Nov 2017 21:02:23 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:139847 Archived-At: > Cc: 29279@debbugs.gnu.org > From: Dmitry Gutov > Date: Mon, 13 Nov 2017 21:02:23 +0200 > > On 11/13/17 8:15 PM, Eli Zaretskii wrote: > > > No, to the left. If a Lisp program wants to align to the right, it > > should insert white space before the actual text. > > That's only possible if it knows the resulting width. Which it will, in > the current state of the discussion. > > Still, it seems unnecessary if the somewhat faster C code could > implement that for every user. We could add that later if needed. It's not rocket science, it's just more complexity. > > posn-at-point goes _once_ from window-start to the specified position, > > so on average it traverses half a window, once. By contrast, we are > > now talking about redisplaying the window twice, and one of these 2 > > times must traverse the entire window. So we are talking about > > threefold slow-down on the average. > > 3-fold slowdown from 500 FPS seems acceptable to me. For each redisplay cycle? On top of disabling most redisplay optimizations? I doubt that.