bug#43519: 28.0.50; Overlay at end of minibuf hides minibuf's real content

[Drew Adams]

> Displaying long stuff in a mini-window that is forced to be small will
> always present some problems, no matter what we do.  The best solution
> is to fit the stuff to be displayed to the dimensions of the
> mini-window, but that is something only a Lisp program can do, the
> display engine cannot.

That's true.

One possibility for displaying more than the space
allows is to put the full text on the prompt string
as property `help-echo'.  That works (if someone has a
mouse and thinks to mouseover the prompt), but no, it's
not ideal.  (And it works only when `tooltip-mode' is
enabled.)

Another possibility would be to bind a minibuffer key in
Ido or Icomplete or whatever, to show the full info in a
popup on demand.

No, I'm not proposing anything.  No such hacks sound
good to me.