Robert Haas <robertmhaas@gmail.com> writes:
> Well, either this or Noah's method has the disadvantage that not
> everyone will get the benefit of the tests, and that those who wish to
> get that benefit must install more stuff. But, all three of the
> computers I have within arm's reach (yeah, I might have a problem)
> have Archive::Tar installed, so maybe it's not a big concern in
> practice.
FWIW, it looks to me like Archive::Tar is part of the standard Perl
installation on both RHEL and macOS, so it's probably pretty common.
> I am slightly inclined to think that the perl package
> approach might be better than shell commands because perhaps it is
> more likely to work on Windows, but I'm not positive.
Yeah, that makes sense to me too.
regards, tom lane