Summary: We already ship ECMAScript Internationalization API support on
Firefox desktop. But this isn't implemented on mobile version (both
Firefox Android and Firefox OS) yet.
Although this feature uses ICU (
http://site.icu-project.org/) as same as desktop version, if gonk-JB or later, this uses system's ICU instead of in-tree ICU code. But, since gonk-ICS's ICU is old version (4x.1), it uses in-tree ICU if using gonk-ICS.
Bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=866301
Link to standard:
http://www.ecma-international.org/ecma-402/1.0/index.html
Platform coverage: All desktop version (already shipped) and Firefox OS
(new)
Will ship in: 40 / Firefox OS 3.0
Preference behind which this will be implemented: none
Other browser support: Blink and Trident (desktop)
-- Makoto Kato