[tz] [PROPOSED] Support SAVE suffixes, for Namibia 1994-2017

[Michael Deckers]

On 2018-04-08 01:21, Paul Eggert wrote:


> Attached is a proposed patch to do that, by slightly extending the 
> syntax of Rule lines so that an entry in their SAVE columns can have 
> an 's' suffix if you want the corresponding rule to specify standard 
> time. For completeness, the new 'd' suffix specifies daylight saving 
> time.
>

    Considering that this proposal makes the setting of the dst bit
    an issue that is independent from the circumstance of whether
    the value of a SAVE entry is zero or not,  is it not
    desirable to completely  avoid the use of negative SAVE values
    to express the dst bit setting, so as to make it easier for
    parsers of zic source files to follow the changes
    in the "bleeding edge" format?

    Also, for systematicness, shouldn't the same suffixes and defaults
    also be applicable to a numeric entry in the RULE column of
    ZONE lines?

    Just my 0.04 $.

    Michael Deckers.