Re: run pgindent on a regular basis / scripted manner

Now that the PG16 feature freeze happened I think it's time to bump
this thread again. As far as I remember everyone that responded (even
previously silent people) were themselves proponents of being more
strict around pgindent.

I think there's two things needed to actually start doing this:
1. We need to reindent the tree to create an indented baseline
2. We need some automation to complain about unindented code being committed

For 2 the upstream thread listed two approaches:
a. Install a pre-receive git hook on the git server that rejects
pushes to master that are not indented
b. Add a test suite that checks if the code is correctly indented, so
the build farm would complain about it. (Suggested by Peter E)

I think both a and b would work to achieve 2. But as Peter E said, b
indeed sounds like less of a divergence of the status quo. So my vote
would be for b. If that doesn't achieve 2 for some reason, or turns
out to have problems we can always change to a afterwards.