bug#59802: 30.0.50; Checkbox button not rendered

[Eli Zaretskii]

> From: Manuel Giraud <manuel@ledu-giraud.fr>
> Cc: stephen.berman@gmx.net,  59802@debbugs.gnu.org
> Date: Tue, 13 Dec 2022 18:15:56 +0100
> 
> 
> > Perhaps this means you need to reshuffle the code so that the case
> > where both dimensions are non-zero comes the first.  Then you will
> > have fewer negations in the conditions and the code will be easier to
> > read and understand.
> 
> You're right.  What do you think of this?

Looks better.