in lib/twitter_cldr/js/tasks/tasks.rb [103:113]
def get_locales
if ENV["LOCALES"]
locales = ENV["LOCALES"].split(",").map { |locale| TwitterCldr.convert_locale(locale.strip.downcase.to_sym) }
bad_locales = locales.select { |locale| !TwitterCldr.supported_locale?(locale) }
puts "Ignoring unsupported locales: #{bad_locales.join(", ")}"
locales - bad_locales
else
TwitterCldr.supported_locales
end
end