Again I've checked v3 patch. In the discussion, there are several other
ideas on its further development, so I consider the patch as the first step
to later progress. Though now the patch is fully self-sufficient in
functionality and has enough tests etc. I suppose it is ready to be
committed.
--
Best regards,
Pavel Borisov
Postgres Professional: http://postgrespro.com <http://www.postgrespro.com>