From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: terminal scrolling in help
Date: Mon, 13 Dec 2021 20:16:39 +0200
Message-ID: <83v8zsl69k.fsf@gnu.org>
References: <87y24pj6nd.fsf@yandex.com> <83ilvsmzjg.fsf@gnu.org>
 <CADwFkmnnx=5EmEmQ+tGa2_Hu-zw3X0dSPuv4KvXrQmRygEXyGg@mail.gmail.com>
 <834k7cmtg3.fsf@gnu.org>
 <CADwFkmnM7ztX=G3jVy49w6cPT1y1PKcpm89OPMhck_DVdG4ZbQ@mail.gmail.com>
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="2443"; mail-complaints-to="usenet@ciao.gmane.io"
Cc: m43cap@yandex.com, emacs-devel@gnu.org
To: Stefan Kangas <stefankangas@gmail.com>
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Dec 13 19:17:51 2021
Return-path: <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
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 <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1mwptT-0000Gd-Mw
	for ged-emacs-devel@m.gmane-mx.org; Mon, 13 Dec 2021 19:17:47 +0100
Original-Received: from localhost ([::1]:35536 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1mwptS-0000dV-Q7
	for ged-emacs-devel@m.gmane-mx.org; Mon, 13 Dec 2021 13:17:46 -0500
Original-Received: from eggs.gnu.org ([209.51.188.92]:48372)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>) id 1mwpsT-0008Dz-Om
 for emacs-devel@gnu.org; Mon, 13 Dec 2021 13:16:45 -0500
Original-Received: from [2001:470:142:3::e] (port=39528 helo=fencepost.gnu.org)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>)
 id 1mwpsT-0003Pk-DH; Mon, 13 Dec 2021 13:16:45 -0500
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=qt3S6lKi9S6+GDx8HkuvTfMzw3XuuYoswxSTzg0x4GE=; b=g5mbh1rQRHvo
 f5Ew393AzYH0Rzfr81V9lJwYayJdm3KDxZGhUtFeSVYiCpgQnXaxVUa4szleHXKam7QGFaZK83ZZP
 e2greBCZ6zGICojW9xtBU/pAmn5WFZEsSZt7x/mjBb/nfzgiSgl3+VzbsHTLxNDjxv2ZQlW7CYGa8
 fJ/JMfwnfdwmRXn6Ow1d6/jB4qhChUQ1z0+wvlutDHRPD7a+oqVEs17+DaPgdYvddwNcquQjXSibI
 WFrrjvbDCjzKwluhNhhBrz6QE4o8/a7MfgRfwDrjRxUvoU+qanpYTxKQDavjOqregxLonbkeBAzP2
 3TrYHGmP8dL45Lpz4b8Nig==;
Original-Received: from [87.69.77.57] (port=2739 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>)
 id 1mwpsT-0002c5-2X; Mon, 13 Dec 2021 13:16:45 -0500
In-Reply-To: <CADwFkmnM7ztX=G3jVy49w6cPT1y1PKcpm89OPMhck_DVdG4ZbQ@mail.gmail.com>
 (message from Stefan Kangas on Mon, 13 Dec 2021 10:12:34 -0800)
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Emacs development discussions." <emacs-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/emacs-devel>
List-Post: <mailto:emacs-devel@gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=subscribe>
Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org
Original-Sender: "Emacs-devel"
 <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
Xref: news.gmane.io gmane.emacs.devel:281859
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/281859>

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Mon, 13 Dec 2021 10:12:34 -0800
> Cc: m43cap@yandex.com, emacs-devel@gnu.org
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> Can we detect that we are running in a terminal and show SPC and DEL
> >> there, while showing <PageDown> and <PageUp> on graphical displays?
> >
> > We can, but why?  PageUp/PageDown are available on some terminals as
> > well, and SPC/DEL are available on GUI displays.
> 
> It seems suboptimal to print PageUp/PageDown if they won't work.

I don't think we can know whether they do work on a given terminal.