Quoth ori@eigenstate.org:
> Quoth ori@eigenstate.org:
> > Quoth David Leimbach <leimy2k@icloud.com>:
> > > diff -r aa49706ca881 sys/include/frame.h
> > > --- a/sys/include/frame.h	Wed May 12 22:40:51 2021 +0200
> > > +++ b/sys/include/frame.h	Thu May 20 11:58:46 2021 -0400
> > > @@ -49,6 +49,7 @@
> > > 	Image		*tick;	/* typing tick */
> > > 	Image		*tickback;	/* saved image under tick */
> > > 	int			ticked;	/* flag: is tick onscreen? */
> > > +	int			noredraw; 	/* don't draw on the screen */
> > > };
> > > 
> > 
> > Just as a note, your mail client appears to have also
> > mangled the text of this patch. Got it to apply with
> > a couple of edits:
> > 
> > 	,s/^[^	@+\-]/ &/g
> > 
> > but it seems to have stripped the leading space from
> > a bunch of lines.
> > 
> 
> This is working well for me. Kivk(?) has reported
> some redraw artifacts which I can't reproduce.

And, I was able to reproduce them.
See attached.