bug#47860: 28.0.50; Mini buffer resize when lines are truncated regression

[Eli Zaretskii]

> Date: Mon, 19 Apr 2021 12:40:12 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: Eli Zaretskii <eliz@gnu.org>, 47860@debbugs.gnu.org
> 
> Thanks.  But what do you expect this code to do?  I tested it, and for 
> Emacs 24 to 27 you see only "a" in the minibuffer.  After commit 
> 56c42bd28d, you see two lines, "a" and "bbb...".

Exactly the questions to which I would like to know the answers,
thanks.

IOW, given that the current code does "somewhat" better than
everything we had before, what exactly is the problem you (Aaron) see
with the offending commit that you call it "regression"?