As it doesn't have documentation, I'm inclined to say we should mark this as Waiting on Author or Returned with Feedback.
I'm planing to have a detailed look at Robert's patch before the end of the year. I could update pgbench documentation while doing that.
-- Fabien. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers