bug#23124: Two minibuffer resize related bugs

[martin rudalics]

>>> Let's start with a much simpler reproducer:
>>>
>>>     . emacs -Q
>>>     . Type "C-x" and wait until you see "C-x-" in the echo area
>>>     . Type "5 2"
>>>
[...]
> I inadvertantly executed Eli's recipe yesterday and noticed an
> additional oddity, seen in this screenshot (I didn't realize that that
> recipe triggered it and since I couldn't otherwise reproduce the oddity
> and had never seen it before, I didn't feel I had enough information to
> file a bug):

I have no idea why C-x 5 2 should resize the echo area in the first
place.  Are you sure this happened with Eli's scenario above?

> The extra space in the second frame's minibuffer remains for the life of
> the frame AFAICT, at least I couldn't find any way to eliminate it.

Not even by displaying an empty or one-line message?

martin