Re: terminal scrolling in help

[Eli Zaretskii]

> 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.