bug#51132: [External] : bug#51132: Make sure user is doubly aware of finished complilations

[Eli Zaretskii]

> From: Drew Adams <drew.adams@oracle.com>
> Date: Mon, 11 Oct 2021 14:41:53 +0000
> Cc: "51132@debbugs.gnu.org" <51132@debbugs.gnu.org>
> 
> A message "Foobarring..." should generally be
> followed when done by "Foobarring...done".  And an
> indication "Foobarring..." in the mode line should
> generally be followed by an indication in the mode
> line (e.g. "Foobarring...done").

But that's exactly what Emacs does.  Did you try to invoke
"M-x compile" and see what happens on display when it finishes?