From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Luc Teirlinck Newsgroups: gmane.emacs.devel Subject: Re: Diff mode faces Date: Sun, 19 Jun 2005 12:10:14 -0500 (CDT) Message-ID: <200506191710.j5JHAEN11479@raven.dms.auburn.edu> References: <87oea5urwm.fsf@jurta.org> <87psujj0h0.fsf@jurta.org> <86hdfv1y9b.fsf@blue.stonehenge.com> <87r7eyqzcy.fsf@jurta.org> NNTP-Posting-Host: main.gmane.org X-Trace: sea.gmane.org 1119201795 3576 80.91.229.2 (19 Jun 2005 17:23:15 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 19 Jun 2005 17:23:15 +0000 (UTC) Cc: eliz@gnu.org, emacs-devel@gnu.org, merlyn@stonehenge.com Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Jun 19 19:23:05 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1Dk3VQ-0006S6-0X for ged-emacs-devel@m.gmane.org; Sun, 19 Jun 2005 19:22:48 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Dk3bT-0003KU-FK for ged-emacs-devel@m.gmane.org; Sun, 19 Jun 2005 13:29:03 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Dk3Zz-0002mJ-D7 for emacs-devel@gnu.org; Sun, 19 Jun 2005 13:27:31 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Dk3Zv-0002kI-0H for emacs-devel@gnu.org; Sun, 19 Jun 2005 13:27:29 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Dk3Zu-0002dA-O6 for emacs-devel@gnu.org; Sun, 19 Jun 2005 13:27:26 -0400 Original-Received: from [131.204.53.104] (helo=manatee.dms.auburn.edu) by monty-python.gnu.org with esmtp (Exim 4.34) id 1Dk3N8-0007S8-DO; Sun, 19 Jun 2005 13:14:14 -0400 Original-Received: from raven.dms.auburn.edu (raven.dms.auburn.edu [131.204.53.29]) by manatee.dms.auburn.edu (8.12.10/8.12.10) with ESMTP id j5JHBcCK017457; Sun, 19 Jun 2005 12:11:38 -0500 (CDT) Original-Received: (from teirllm@localhost) by raven.dms.auburn.edu (8.11.7p1+Sun/8.11.7) id j5JHAEN11479; Sun, 19 Jun 2005 12:10:14 -0500 (CDT) X-Authentication-Warning: raven.dms.auburn.edu: teirllm set sender to teirllm@dms.auburn.edu using -f Original-To: juri@jurta.org In-reply-to: <87r7eyqzcy.fsf@jurta.org> (message from Juri Linkov on Sun, 19 Jun 2005 16:05:29 +0300) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:39121 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:39121 Juri Linkov wrote: > Juri> Yellow foreground works well for context lines. > > Except when you normally read black on white. For quite a long time (most likely from the time when color translation was implemented for tty) colors of context lines in diff mode on tty were yellow for light backgrounds. There are also other faces with yellow foreground for light backgrounds, like font-lock-variable-name-face. Nobody complained about them so far. So maybe yellow is the acceptable color for context lines. I remember seeing people complain that they have trouble reading yellow on white _many_ times on this list. I know of many people who have trouble reading red on black. I have trouble with both and I have even more problems reading cyan on white. I do not complain, I just always turn colors off on tty's. When discussing colors one has to realize that it depends very much on individual eyesight, as well as on the monitor setting and plenty of other factors. Not everybody with an abnormal color vision is aware that they have abnormal color vision. It is not easy (probably hopeless) to support people with abnormal color vision while picking default colors (other than only using black on white or vice versa), since variation among people with abnormal color vision is so large. Sincerely, Luc.