Should map/bind/then catch the exceptions throw by the continuation?

[viboes]

It is easy to catch the exceptions when the type is expected<exception_ptr,T>.

However, doing it for expected<E,T> needs a conversion from the current exception and the error E.

This proposal requires that the continuation doesn’t throw exceptions as we don’t have a general solution.

Should expected<exception_ptr,T>::map/bind/then catch the exceptions and propagate them on the result?

Should expected<E,T>::map/bind/then catch the exceptions and propagate them on the result by doing a transformation from the exception to the error?

If yes, how to configure it?