Intl.DateTimeFormat should localize era names as well

[watilde]

In annex-implementation-dependent-behaviour, it is mentioned that DateTimeFormat should localize era names: annexes.html#L102, but in the part of 12.1.6FormatDateTime linked from the above, there is no description about the localized era names. Probably it can be bug.

The description to resolve it may can be like this:

If _p_ is *"era"*, then the String value may also depend on whether _dateTimeFormat_ has a [[era]] internal slot

Related links: andyearnshaw/Intl.js#164, andyearnshaw/Intl.js#166

Thanks.

[caridy]

merged as b0c9b6b

[littledan]

Did we get any implementations of this, besides Intl.js? Are there any tests in test262? Or, is this simply a reflection of web reality, as Intl implementations already do localize the era this way based on, e.g., CLDR data?

[jungshik]

Era is localized in v8, I believe because cldr has data for them.