On Sat, May 13, 2017 at 10:34 AM Eli Zaretskii <eliz@gnu.org> wrote:

> >  and ask
> >  the user what she would like to do about, with 3 possible answers
> >  being "rebind", "don't rebind", and "error out of 'load'"?
> >
> > Would that halt emacs startup with that prompt?
>
> It would stop the load of the features which redefines the keys.
>

What I meant is that what if the user is starting emacs using emacsclient
and that prompt interferes with the startup process. It can get very
irritating.

> If so, I believe that would cause an annoyance for a lot of
> > users who might have already shadowed bindings.
>
> That's why I proposed to do that only once, the first time this
> ever happens for a key or a group of keys.
>

So the preference would be saved via Customize interface.


> > What if define-key is instead made to throw a message or a warning?
>
> What's the difference between a message and a warning?
>

I meant just a message.


> Anyway, this could also be good, but its disadvantage is that it
> doesn't let the user an opportunity to reject the rebinding.
>

That right.

I think this should be an interactive feature, not a non-interactive
> one.
>

I thought of above so that the people don't shadow the bindings unknowingly
in their config. I personally never set bindings interactively; may be many
others do the same. So I cannot tell how much impact this will have if this
happens just interactively.
-- 

Kaushal Modi