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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
cc: Heikki Linnakangas <hlinnaka@iki.fi>,
        Michael Paquier <michael@paquier.xyz>,
        pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Removing support for COPY FROM STDIN in protocol version 2
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References: <20210204152548.GA6658@alvherre.pgsql>
Comments: In-reply-to Alvaro Herrera <alvherre@alvh.no-ip.org>
	message dated "Thu, 04 Feb 2021 12:25:48 -0300"
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Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> Yeah, the changes I was thinking about are all in libpq-int.h so that's
> not really a problem.  But one enum in libpq-fe.h renumbers values, and
> I think it's better to keep the old value labelled as "unused" to avoid
> any changes.

Oh, yeah, can't do that.  libpq-fe.h probably shouldn't change at all;
but certainly we can't renumber existing enum values there.

			regards, tom lane