`TZInfo::Country` no information about linked timezones

[davispuh]

I want to get all timezones for specific country, but TZInfo::Country.zone_identifiers doesn't return linked timezones.

For example

TZInfo::Country.get('SS').zone_identifiers
=> ["Africa/Khartoum"]

TZInfo::Timezone.get('Africa/Juba').canonical_zone.identifier
=> "Africa/Khartoum"

Thus, I also want to get Africa/Juba for SS

Currently seems would need to go over all linked timezones and check their canonical zone against already returned zones.

[philr]

Please refer to my comment on #60 (which is essentially the same issue, but talking about Croatia rather than South Sudan).

The IANA Time Zone database defines Africa/Khartoum as the (only) time zone for SS. TZInfo is just returning the data from the Time Zone database unmodified.

[davispuh]

That is based on current status, but in past it was Africa/Juba, see zone.tab

I'm using TZInfo for processing historical data thus there it would appear as Africa/Juba instead of Africa/Khartoum

Anyway okay I'll just go over all_linked_zones as suggested.