bug#19468: 25.0.50; UI inconveniences with M-.

[Eli Zaretskii]

> From: Helmut Eller <eller.helmut@gmail.com>
> Cc: dgutov@yandex.ru,  monnier@iro.umontreal.ca,  19468@debbugs.gnu.org
> Date: Tue, 30 Dec 2014 19:33:07 +0100
> 
> On Tue, Dec 30 2014, Eli Zaretskii wrote:
> 
> >> > What I meant is to do automatically what moving to the first candidate
> >> > does.  It doesn't close any windows, AFAICS, it just displays the
> >> > definition in the upper window, leaving the list in the lower one.
> >> 
> >> If you press RET in *xref* buffer it closes the *xref* window.
> >
> > I meant to simulate the '.' key, not the RET key.
> 
> Then this question was already answered 3 times and here's the fourth
> time: it would display two buffers at the same time which is confusing
> and I had implemented that already and I didn't like it.

I'm not asking you to like it.  I'm asking to provide a user option to
get this behavior, for those who might like it.