ORA-FO-DEEPEQUAL-EMPTY 15.2.1 fn:deep-equal

*Functions and Operators, Section 15.2.1 fn:deep-equal*


Why does this function return true if both arguments are the empty 
sequence ?

cf fn:contains which returns false if either argument (and presumably if 
both arguments) is the empty sequence.
cf fn:sequence-node-identical which returns the empty sequence if one or 
both arguments is the empty sequence.