Here is a patch to support RFC 2255 LDAP URLs in pg_hba.conf. So,
instead of, say
host ... ldap ldapserver=ldap.example.net ldapbasedn="dc=example, dc=net" ldapsearchattribute=uid
you could write
host ... ldap lapurl="ldap://ldap.example.net/dc=example,dc=net?uid?sub"
Apache and probably other software uses the same format, and it's easier
to have a common format for all such configuration instead of having to
translate the information provided by the LDAP admin into each
software's particular configuration spellings.
I'm using the OpenLDAP-provided URL parsing routine, which means this
wouldn't be supported on Windows. But we already support different
authentication settings on different platforms, so this didn't seem such
a big problem.