agreed, see my update in the meantime.

> (I don't see any need for it to do that ... it just makes things confusing.)

Math::BigInt is mentioned quite often in the docs, e.g.

Math library

Math with the numbers is done (by default) by a module called Math::Bi
+gInt::Calc. This is equivalent to saying:
[download]

So I suppose there is some intended interoperability between these modules.

Obviously a good reason for a bug report, though my impression is that the whole thing will need a redesigned.

edit

Or maybe good case of tl;dr... there is really much stuff to read and I'm still mid-coffee ... ;-)