bug#62707: 30.0.50; [PATCH] Non toolkit scroll bar handle

[Manuel Giraud via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Eli Zaretskii <eliz@gnu.org> writes:

> Maybe it's distracting at times, but this is how Emacs behaves with
> all the toolkits, or at least most of them.  The size of the
> scroll-bar thumb is set according to the size of text, not according
> to the number of lines.  So I don't think we should change this for
> just one configuration.

Ah ok.  Now that I know the meaning I guess it is a feature ;-) I have
just checked and it is really less obvious (or distracting) with the
gtk3 backend.  I don't know why.

For my patch, it shouldn't change any behaviour.  It is just:

    - less code in xterm.c
    - one less call to XFillRectangle

But maybe there are some X11 optimization that I'm aware of: like it is
better to do two small area XFillRectangle than one big one.  So it's up
to you to decide if it should be applied or just ditched.

Thanks.
-- 
Manuel Giraud