[basex-talk] unexpected results in typecasting functionresult

Christian, I encountered some unexpected behavior with the typecasting of functionresult. it is about the "?" in line 4 of both snippets. [expectedResult.xq], the snippet with the " ?" gives the expected result. [unexpectedResult.xq], the snipped without the "?" , gives an unexpected result. Is this a correct observation or am I missing something? mvgr. Rob Stapper