From: Tom Lane <tgl@sss.pgh.pa.us>
To: Stephen Frost <sfrost@snowman.net>
cc: Robert Haas <robertmhaas@gmail.com>,
        Ian Barwick <ian.barwick@2ndquadrant.com>,
        Amit Kapila <amit.kapila16@gmail.com>,
        "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Subject: Re: [PATCH] Stop ALTER SYSTEM from making bad assumptions
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Comments: In-reply-to Stephen Frost <sfrost@snowman.net>
	message dated "Mon, 24 Jun 2019 14:56:47 -0400"
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Date: Mon, 24 Jun 2019 15:12:09 -0400
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Stephen Frost <sfrost@snowman.net> writes:
> Stephen and Magnus want a warning, because it's an indication that a
> tool author, or *something* modified the file in an unexpected way, and
> that we are having to do some kind of cleanup on the file because of it.

But you're presuming something that not everybody agrees with, which
is that this situation should be considered unexpected.

In particular, in order to consider it unexpected, you have to suppose
that the content rules for postgresql.auto.conf are different from those
for postgresql.conf (wherein we clearly allow last-one-wins).  Can you
point to any user-facing documentation that says that?

			regards, tom lane