From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.help Subject: Re: Emacs pretest: highlight line number in display-line-numbers-mode? Date: Fri, 20 Oct 2017 09:34:39 +0300 Message-ID: <83376ee39c.fsf@gnu.org> References: <> <<87a80ntah3.fsf@gmail.com> <25a064f1-c267-49f7-a8de-b28baee928ac@default>> <<834lquew6p.fsf@gnu.org>> <0da3bf1b-7d66-4462-8097-e9afe759e99d@default> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1508481459 3478 195.159.176.226 (20 Oct 2017 06:37:39 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 20 Oct 2017 06:37:39 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Oct 20 08:37:36 2017 Return-path: Envelope-to: geh-help-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 1e5Qvp-00078u-VU for geh-help-gnu-emacs@m.gmane.org; Fri, 20 Oct 2017 08:37:22 +0200 Original-Received: from localhost ([::1]:52364 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e5Qvx-0005E2-7m for geh-help-gnu-emacs@m.gmane.org; Fri, 20 Oct 2017 02:37:29 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52313) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e5QtR-0003T4-RH for help-gnu-emacs@gnu.org; Fri, 20 Oct 2017 02:34:54 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e5QtM-0000La-Tq for help-gnu-emacs@gnu.org; Fri, 20 Oct 2017 02:34:53 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:47647) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e5QtM-0000LT-QO for help-gnu-emacs@gnu.org; Fri, 20 Oct 2017 02:34:48 -0400 Original-Received: from [176.228.60.248] (port=1804 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1e5QtM-0007fi-73 for help-gnu-emacs@gnu.org; Fri, 20 Oct 2017 02:34:48 -0400 In-reply-to: <0da3bf1b-7d66-4462-8097-e9afe759e99d@default> (message from Drew Adams on Thu, 19 Oct 2017 13:43:06 -0700 (PDT)) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:114586 Archived-At: > Date: Thu, 19 Oct 2017 13:43:06 -0700 (PDT) > From: Drew Adams > > > This face is by default the same as line-number because of 2 reasons: > > > > . linum-mode did the same > > ...chasing that rabbit: Why did `linum-mode' do that? I don't know, but too many differences from a previous feature tend to annoy people IME. > > . using a different face makes redisplay slightly slower > > (because it disallows some redisplay optimizations) > > Would those optimizations still be available if a > user chose the same face for both (but the faces > were different by default)? > > If so, I'd suggest making the faces different by > default. They are already different by default. They just have the same attributes. > IOW, opt-in for the loss of a difference. That's already so. > > > To find the face used, I use `list-faces-display' and look > > > for either a face name that is a likely candidate > > > (`line-number' is pretty obvious, in this case) or a face > > > appearance that matches what I see. > > > > There are other places where this doesn't work, e.g. on the > > mode line. > > What do you mean by "this"? Using `list-faces-display' > or the fact that you can't use `C-u C-x =' to learn > the face? The latter. > You gave that reply after my mention of the former. > Aren't all of the faces used in the mode line shown in > `list-faces-display'? They are, but so are the line-number faces.