Re: Gitlab Migration

[Dmitry Gutov]

On 05.09.2021 06:44, Richard Stallman wrote:
> I think undo/redo instead of undo-only might be an improvement in
> Emacs, and might not be hard to get used to as a change -- if only we
> can find a key binding for redo.  I know we had a discussion of
> this before.

Let me do a recap. We proposed the keys that a reasonably popular 11 
year old package called undo-tree uses: 'C-?' and 'M-_'.

You replied that those seem inconvenient because C-? is not available on 
ttys, and both C-? and M-_ require two shift keys.

Others replied later that users generally expect 'redo' to require one 
more modifier than 'undo'. In graphical Emacs, it can work out to having 
'C-/' call 'undo', then one can additionally hold down the Shift key to 
the right of '/', calling 'redo' with the resulting 'C-?'.

Alas, there would be no such easy transition in terminal Emacs, but 
other than that, requiring an extra modifier key is not inherently a 
problem. The user should be able to switch between C-- and M-S-- and 
back without too much trouble.

In the same discussion T.V. Raman mentioned that he has bound 
'undo-redo' to 'C-x C-u', to stay close to 'C-x u', another default 
binding for 'undo'.

'C-x C-u' is unfortunately occupied, but it's a disabled command, so 
maaaybe we could take over the binding? Or use 'C-x U'.