From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Tony Zorman Newsgroups: gmane.emacs.devel Subject: Re: Ansi-color uses the same values for fore- and background colours Date: Thu, 10 Aug 2023 05:59:03 +0200 Message-ID: <87leejczug.fsf@hyperspace> References: <87h6p8mn5n.fsf@hyperspace> <034beec5-0505-a399-6f78-e162c819f1a4@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9009"; mail-complaints-to="usenet@ciao.gmane.io" To: Jim Porter , emacs-devel@gnu.org, Protesilaos Stavrou Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Aug 10 07:00:57 2023 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 1qTxn7-0002Av-Pz for ged-emacs-devel@m.gmane-mx.org; Thu, 10 Aug 2023 07:00:57 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qTxmF-0003mz-9j; Thu, 10 Aug 2023 01:00:03 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qTwpO-0001xL-Tp for emacs-devel@gnu.org; Wed, 09 Aug 2023 23:59:14 -0400 Original-Received: from mout-p-202.mailbox.org ([80.241.56.172]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_CHACHA20_POLY1305:256) (Exim 4.90_1) (envelope-from ) id 1qTwpM-0004su-Mu for emacs-devel@gnu.org; Wed, 09 Aug 2023 23:59:14 -0400 Original-Received: from smtp2.mailbox.org (smtp2.mailbox.org [10.196.197.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-202.mailbox.org (Postfix) with ESMTPS id 4RLtTQ4wS5z9tcR; Thu, 10 Aug 2023 05:59:06 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1691639946; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ztwi9+HpY8owGRjLG4zPUw0jBDc+AFv7HUrLvCo7vyE=; b=JEpebr5TSX+HCis4044IOxuKxh4EoRb1ClS7DG+puNmBdhn4pzqK0sfW0JrX/5bqS3ncoA YimoMuE0Ajghz3Nh1O43Ma4IHR6h90ZLY7RGrQoMimQ7ZfT7lkw3hCTz9S0YlHq9u4q0F/ FyuKey6zFK+AzS5xi/h/TlKFegh1HkDkhngwpr/DQ2pGq12/KIj47Geyr/xe7hfCvLqaOL f9qGL9VCcGhlRrXseh2PA2TirtJvRpVZDErH2CgsdLFgcw4E3G111KH5X5M2BwvW4BFzya JV0C/DV43/54rwlPS7qKq+NtTU3jsBMJOuA29l6eZ/vT+9zonXAG0i+zbLnKuw== In-Reply-To: <034beec5-0505-a399-6f78-e162c819f1a4@gmail.com> X-MBO-RS-ID: 1fd2a08e64e856a27a5 X-MBO-RS-META: 53nfnxdnujrmfd9crch19f67qdakh67w Received-SPF: pass client-ip=80.241.56.172; envelope-from=tonyzorman@mailbox.org; helo=mout-p-202.mailbox.org X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Thu, 10 Aug 2023 01:00:01 -0400 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:308506 Archived-At: On Wed, Aug 09 2023 09:51, Jim Porter wrote: > Have you customized your settings for "man" somehow (or maybe changed=20 > your pager)? I was going to say "no", but in the deepest recesses of my ~/.profile I did find some stuff that direction! The "offending" line was something like export LESS_TERMCAP_so=3D"$(printf '%b' 'ESC[01;44;33m')"; a=3D"${a%_}" However=E2=80=A6 > If you *have* customized some of your settings, maybe you just need to=20 > tweak them so that they don't produce unreadable output. =E2=80=A6I don't think this invalidates the question. This was just the eas= iest reproducer for me, but something akin to this could certainly happen "in the wild". There can be, visually, quite a big difference between fore- and background colours. Especially for high-contrast themes, I wouldn't expect foreground colours=E2=80=94sometimes very saturated/dark=E2=80=94to = be particularly good when used as a background. --=20 Tony Zorman | https://tony-zorman.com/