Jim Nasby <jim(at)nasby(dot)net> writes:
> Let me ask a related question: is there any reason why we don't accept argument names or the default specifier in the regprocedure cast?
regprocedure_in does not contain a full SQL parser, which it would pretty
much need in order to deal with default expressions. Argument names it
could possibly ignore without much trouble, but nobody bothered to teach
it about that.
regards, tom lane