[tz] [PROPOSED] Fix ambiguous leapsecs by rolling up to a minute

[Michael H Deckers]

    On 2021-09-16 16:02, Paul Eggert wrote:

> "We can implement two possibilities:
>
> "(A) Your timestamps will be unambiguous, but this will complicate 
> some obscure calculations on old-fashioned platforms during the 
> trailing part of a leap-second minute.
>
> "(B) We can simplify those obscure calculations, but your timestamps 
> will be ambiguous."
>
> then the local authority will pick (A).


    ...even if you tame the enthusiasm of said "local authority" by 
admitting
    that she will never see her cherished variant (A) on her iphone or her
    Windows machines, but only on "UNIX boxes using the right timezones".

    Michael Deckers.