[tz] Version in zoneinfo files?

[Guy Harris]

On Oct 31, 2015, at 8:00 AM, Lester Caine <lester at lsces.co.uk> wrote:

> Up until now one could not even guarantee that if
> a distribution actually provided a version number that the content would
> match the same data from another distribution.

You'll *never* be able to *guarantee* that, 100%, with anything short of a signature; you'll only be able to hope that the distribution provider doesn't do something stupid such as change the source files from what's in tzdata2017b without changing the version number to "2017b-frobozzlinux10.17".