Re: terminal scrolling in help

[Alan Mackenzie]

Hello, Stefan.

On Mon, Dec 13, 2021 at 05:49:36 -0800, Stefan Kangas wrote:
> Eli Zaretskii <eliz@gnu.org> writes:

> >> From: Colin Baxter 😺 <m43cap@yandex.com>
> >> Cc:
> >> Date: Mon, 13 Dec 2021 07:39:02 +0000

> >> 1. emacs-27.2 -nw -Q <RET>
> >> 2. C-h ?

> >> The user is then told to use Space or Del to scroll options. This works
> >> in xterm, stterm and urxvt.

> >> In emacs-28.0.90 (and emacs-29.0.50) the user is now told to use
> >> <PageDown>, <PageUp> to scroll, neither of which work in xterm,
> >> stterm or urxvt

> >> I am wondering why the scroll advice was changed?

> Because those are more natural keys to use on graphical displays.

> > How about providing a patch that adds SPC and DEL to the advice?

> Can we detect that we are running in a terminal and show SPC and DEL
> there, while showing <PageDown> and <PageUp> on graphical displays?

Probably not reliably.  On my Linux console, <PageUp/Down> work just
fine.

How about showing both pairs of key bindings?

-- 
Alan Mackenzie (Nuremberg, Germany).