[small regression?] Demisemiquaver beamException when in 12/8

[Bertrand Bordage]

Hi !

Why is there an exception for demisemiquavers when time is 12/8 ?
Shouldn't this be for hemidemisemiquavers ? Or no exception ?
I have many scores with such cases :

\version "2.13"
{ \time 12/8 \repeat unfold 6 a16 a8 a a16 a32 a \repeat unfold 6 a8 }

I don't think any editor will represent it the way 2.13 does.

Another question :
In time-signature-settings.scm, lines 164 and 170, why are baseMoment
defined ?

Thank you,
Bertrand