Re: GROUPS

[Robert Elz]

    Date:        Mon, 16 Aug 2021 22:16:29 -0400
    From:        "Dale R. Worley" <worley@alum.mit.edu>
    Message-ID:  <878s10yfwi.fsf@hobgoblin.ariadne.com>

  | What seems to be the case with sh-style shells and Posix is that
  | all-caps variable names are subject to implementation-specific use, and
  | so users should not use them except when using them in the way that is
  | specific to the implementation the script is to be executed on.

That could have been done, once perhaps, but it is way too late now.
There is no such rule anywhere in POSIX sh, and scripts using upper
case var names abound in the world, there's no chance that they're
going away.

kre