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 10:21:47 +0100
> 
> This new patch calculate the unknown percentage dimension with the other
> known dimension.  It should work the same on our examples (maybe Stephen
> you could check that).

I'm not sure I understand the reason for "else if".  Isn't possible
that both conditions could be true?  If so, why not use both
dimensions in that case, instead of arbitrarily preferring one of
them?

Which of the 3 possible branches get executed in the recipe of this
bug?  IOW, which dimension was unknown?