On Saturday 2013-03-02 10:50 -0800, Norbert Lindenberg wrote:
> On Mar 2, 2013, at 8:46 , Mark Davis ? wrote:
> > The TZDB has the equivalence class {Asia/Calcutta Asia/Kolkata}. They used
> > to have the former as the canonical name (in Zone), but then changed it to
> > the latter. Here is the current TZDB data:
> >
> > zone.tab
> >
> > IN +2232+08822 Asia/Kolkata
> >
> > asia
> >
> > Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata
> > ...
> >
> > backward
> > Link Asia/Kolkata Asia/Calcutta
> >
> > Because of the Link, both are valid and equivalent.
> That breaks if/when the tz database removes Asia/Calcutta from its Link list
> and other systems using IANA names stop supporting (or never start
> supporting) that name.
>
> I still think the stability issue should be addressed in the IANA time zone
> database itself, not by adopting a IANA-derived alternate registry. Has that
> been tried?
In http://mm.icann.org/pipermail/tz/2013-March/018697.html the
maintainer of the timezone database wrote (in reference to this
discussion):
# That discussion seems to be predicated on the assumption that
# tz zone names can and do "disappear", but they don't. For example,
# we renamed Asia/Calcutta to Asia/Kolkata, but kept the old name
# as an alias for the new one.
So I think from their end, the "stability issue" is considered
addressed. Is that not sufficient?
-David
--
𝄞 L. David Baron http://dbaron.org/ 𝄂
𝄢 Mozilla http://www.mozilla.org/ 𝄂
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