Andres Freund <andres(at)anarazel(dot)de> writes:
> On April 14, 2018 1:56:08 PM PDT, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> The project policy is to use exactly the GNU distribution of autoconf.
> Fwiw, I see one copyright year related diff with unmodified upstream autoconf.
Really? Where did you get autoconf from? My archived copy of
autoconf-2.69.tar.gz, fetched 2013-11-15, has internal file
dates of (mostly) 2012-04-24. That matches the file dates at
https://ftp.gnu.org/gnu/autoconf/
so I've not actually pulled down fresh bits to compare, but ...
regards, tom lane