bug#51281: [External] : bug#51281: 28.0.60; repeat-mode issues

[Drew Adams]

> > Currently there is a bug where the prefix arg changed for the
> > repeatable commands, is applied to the next non-repeatable
> > command.  For example: C-- C-x o o C-n  or  C-x o C-- o C-n
> 
> Actually, this too confusing feature

It's not confusing at all.

> that allows changing prefix args during the repeating
> sequence increases code complexity enormously.

Too bad.  In that case, feel free to revert the changes
you've made that impose such complexity.  The code just
worked - has worked for a long time.

> this feature will be removed (unless someone will ask
> to leave it)

"unless someone..."

Yes, I ask that this important feature be kept,
not lost.  Users should continue to be able to
add/change a prefix arg (of any kind) at any
time during repetition.

Starting the command over (with a different
prefix arg) is not _at all_ the same thing as
continuing the command invocation.

(Think command state, and Emacs state in general,
in addition to user interaction.)