I have some doubts about the new pg_config behavior of printing "not recorded"
when an item is not known. I doubt that this will cause automated users of
this program to behave reasonably in error scenarios. I think a more
reasonable behavior would be to use a non-zero exit status and possibly print
a message to stderr and nothing to stdout.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/