Subject: bug#51490: Show an indicator when Emacs is busy somewhere in the Emacs window

From: Gregory Heytings <[email-masked]>
Date: Wed, 21 Sep 2022 16:02:12 +0000

>
> We barely get away with that on TTY frames (that's how TTY menus are 
> implemented).  On GUI frames, I don't think it's feasible, not with the 
> code we have now.
>

On GUI frames, can't we do something similar to what we do for fringe 
bitmaps?