bug#53158: 28.0.90; TAB, RET key behave differently for Git-Log-View, Outline View mode

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: van.ly@sdf.org,  53158@debbugs.gnu.org
> Date: Mon, 10 Jan 2022 22:18:40 +0200
> 
> > To me, this tells that these two modes, and the user expectations and
> > habits to go with them, are simply incompatible, and we shouldn't try
> > mixing them.  If someone wants a diff-mode-like outline mode, let's
> > make such a mode, and leave the original diff-mode alone.
> 
> This problem is not specific to diff-mode.

It was just an example.  There's no limit on the number of modes we
can have in Emacs.