Michael Paquier <michael(at)paquier(dot)xyz> writes:
> While digging into my backlog, I have found this message from Peter E
> mentioning about $subject:
> https://www.postgresql.org/message-id/e6aac026-174c-9952-689f-6bee76f9ab68@2ndquadrant.com
> It seems to me that it would be a good idea to make those checks more
> consistent, and attached is a patch.
Hm, I'm pretty certain that data_directory does not need this because
canonicalization is done elsewhere; the most that you could accomplish
there is to cause problems. Dunno about the rest.
regards, tom lane