bug#44664: 28.0.50; troubles with some chars in term

[Jean Louis]

* Andreas Schwab <schwab@linux-m68k.org> [2020-11-17 12:00]:
> On Nov 15 2020, Jean Louis wrote:
> 
> > This trouble also takes place under emacs -Q:
> >
> > Recipe:
> >
> > Obtain the archive file:
> > https://lists.gnu.org/archive/mbox/gnu-emacs-sources/2002-01
> >
> > invoke M-x term
> >
> > run mutt to see the file:
> >
> > mutt -f 2002-01
> >
> > go up and down to see distortions. While this is mutt it does not
> > matter as term is making problems due to those weird chars on screen.
> 
> You need to make sure all characters are coming from the same monospace
> font, or that all fonts that are used here have exactly the same
> dimensions.

How do I make sure of it?