bug#43572: Feature request: make it possible to choose whether the first lines of the minibuffer should be displayed instead of the last ones

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: ghe@sdf.org,  43572@debbugs.gnu.org
> Date: Sun, 27 Sep 2020 17:52:21 -0400
> 
> >> This sounds like the same idea of a text property, only with an
> >> overlay and a more complicated test for applicability.  When I said
> >> "text property", I meant both text and overlay property, so if you
> >> think your proposal above is less difficult/inconvenient, then using
> >> just an overlay would be even simpler, no?  Or what am I missing?
> 
> My motivation was to solve the issue of finding the relevant overlay.
> But yes, we could also just try and find "the overlay that covers point
> and which has a non-nil `scroll-focus` property".  We'll just have to be
> careful to properly handle the case where point is exactly at
> `overlay-start` or `overlay-end`.

I actually thought about putting the text property or overlay on the
first character of the text inserted into the minibuffer, something
that can be done in a minibuffer-setup-hook.  This way, it will be
easy to find.  Of course, having that on any other part of the text
will not make the job much harder, either.