Re: non-deterministic compression results with gzip -n9

[Paul Eggert]

I should add that it's OK (from the point of view of
the RFCs) if gzip produces different outputs given the same
inputs when compressing.  The RFCs allow that and presumably
other gzip implementations do that.  All that's required is
that compress+decompress result in a copy of the original.

That being said, it's nicer if gzip is deterministic and it'd
be helpful to to get to the bottom of this and make
the nondeterminism go away in future versions of gzip.