Am 23.01.2014 19:04 schrieb "Eli Zaretskii" <eliz@gnu.org>:
>
> > Date: Thu, 23 Jan 2014 18:31:58 +0100
> > From: Sebastian Wiesner <lunaryorn@gmail.com>
> > Cc: tromey@redhat.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org
> >
> > > Imagine some situation where this output is caught and parsed, for
> > > example.
> > >
> > > In general, given behavior that is old enough, you can be sure that
> > > someone, somewhere relies on it.
> >
> > I don't think it is my task to care for anyone, anywhere.
>
> Why not?  Backward incompatibility is one of the worst traits in
> software, IMO.

Not undoing or fixing bad design decisions from the past is another one, IMHO.

> > If there is a concrete use case for these messages, fine, then we can try
> > to find a good solution for either party involved, but we can't reasonably
> > discuss about "virtual" use cases.
>
> I just gave you one concrete use case, above.

Which I replied to with concrete questions, with the intent to, well, "find a good solution for either party involved"...