Re: Changes for emacs 28

[Ergus]

On Fri, Sep 11, 2020 at 01:10:29PM +0300, Dmitry Gutov wrote:
> 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.
Yes these were/are exactly my concerns. 

> 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.

I use C-/ for undo so C-? in my keyboard is C-S-/ so it is perfect. But
for people using C-_ (C-S--) maybe M-_ (M-S--) will make more
sense (BTW: in Spanish keyboard it does).