Re: Changes for emacs 28

[Dmitry Gutov]

On 11.09.2020 09:39, Eli Zaretskii wrote:
> > Date: Fri, 11 Sep 2020 01:14:20 +0200
> > From: Ergus<spacibba@aol.com>
> > Cc: Ricardo Wurmus<rekado@elephly.net>, Gregory Heytings<ghe@sdf.org>,
> >   emacs-devel@gnu.org
> >
> > 3) Is it possible/should we: add a redo icon in the toolbar
> > conditionally when the mode is enabled?
> >
> > else
> >
> > 4) I see a redo added in the menu-bar unconditionally... should we do
> > the same in the toolbar unconditionally?
> I indeed think that the Redo icon should be added unconditionally
> (enabled only when there's something to redo, like the menu item).

Are you not worried about the divergence between the menu items and the 
toolbar, and the actual available bindings?

And also about the fact the menu item next to 'redo' doesn't call 
'undo-only'? Which will be contrary to the expectations of users who 
know the concept of 'redo' from other programs.

I think this created a potential for additional user confusion.

A global mode like undo-redo-mode, like suggested by Ergus, would avoid 
both of these problems. We'd only need to find a key for 'undo-redo'.

Perhaps, 'M-_' and 'C-?'? That's what undo-tree uses by default.