On Wed, Jun 28, 2023 at 09:26:02AM +0300, Aharon Robbins wrote:
> Attached is "A Supplemental Document For Awk". This circulated on
> USENET in the 80s.  My copy is dated January 18, 1989, but I'm sure
> it's older than that.

In the utzoo Usenet archive, there are two versions of this document and
a few mentions of it...

John Pierce posted to comp.unix.questions on 1989-04-02, saying he'd
written it "four or five years ago".

Stu Heiss, in comp.unix.questions on 1989-03-06, said it was "posted to
net.sources 18 Jun 86 with message-id 238@sdchema.sdchem.uucp".
Unfortunately this isn't in the utzoo archive or the net.sources.mbox
in archive.org's Usenet Historical Collection.

A copy identical to yours was posted by Jim Harkins to
comp.unix.questions on 1990-03-29.

There's a later version, fixing a typo and some formatting and adding a
mention of \f and \b in printf, which was posted by Brian Kantor to
comp.doc on 1987-10-11 -- I've attached this. The same file (with two
.bps commented out) was reposted in comp.unix.questions on 1989-11-16 by
Francois-Michel Lang.

Thanks,

--
Adam Sampson <ats@offog.org>                         <http://offog.org/>