Brian.Inglis at SystematicSw.ab.ca
Sun Nov 29 23:33:51 UTC 2020
On 2020-11-29 03:10, Lester Caine wrote:
> On 29/11/2020 08:13, Brian Inglis wrote:
>> In some cases all backward links are dropped, possibly relying on CLDR and ICU
>> for any compatability; in others a lot of legacy zone data is kept around,
>> such that nothing that ever worked will ever produce different output, except
>> perhaps for corrections, down to historical zone abbreviations; everything in
>> between may be included, depending on distribution or project policy,
>> maintainer intent and conscientiousness: the mode is likely to be the upstream
>> tzdata defaults, perhaps with patches providing some (additional) deprecation
>> notice period allowing other packages to be adapted, which may include the
>> system time library routines.
> Given the important material identified by data that is only available in the
> 'backward' storage it IS about time the ability to drop it was removed. The
> second world war was not that long ago and where backward differences are not
> included there is no indication that the material returned me well be incorrect!
Given the wide range in capabilities and storage capacities across systems using
tzdata, it is essential that downstreams have all options available to minimize
the space used.
It also uses less resources to provide updates, which are probably as important
as the zones.
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
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[Data in binary units and prefixes, physical quantities in SI.]
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