Re: WIP: BRIN multi-range indexes

This stuff sounds pretty nice.  However, have a look at this report:

https://codecov.io/gh/postgresql-cfbot/postgresql/commit/2aa632dae3066900e15d2d42a4aad811dec11f08

it seems to me that the new code is not tested at all.  Shouldn't you
add a few more tests?

I think 0004 should apply to unpatched master (except for the parts that
concern files not in master); sounds like a good candidate for first
apply.  Then 0001, which seems mostly just refactoring.  0002 and 0003
are the really interesting ones (minus the code removed by 0004).

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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