[tz] Proposal: validation text file with releases
eggert at cs.ucla.edu
Tue Jul 14 23:51:36 UTC 2015
Jon Skeet wrote:
> Unfortunately dump doesn't have all the information I'd wish it to - namely
> the split between standard and daylight offsets. It indicates whether a
> zone is in daylight savings or not, but not how much that contributes to
> the overall offset.
That shouldn't matter. No software should care about that. Any software that
does care is delving into undocumented and unsupported areas.
> As for platforms that don't use the tz database at all - as the purpose of
> this is to validate the use of the tz database, I'm not sure that's much of
> an advantage.
It can be helpful, for example, when comparing a simple tz database entry to the
should-be-equivalent POSIX TZ string (which does not require the tz database).
> I haven't yet got a feeling for your thoughts on the proposal... is this
> something you can see any future in? I suppose the canonical file wouldn't
> *have* to come from IANA, but that does feel like the best option.
I can see something along these lines working, yes. That is, we could
distribute extra tarballs containing zdump output (with a better format
perhaps), zic output, and tzdist-format output (if we ever get around to doing
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