# File lib/active_support/vendor/i18n-0.4.1/i18n/locale/tag/rfc4646.rb, line 65
            def match(tag)
              c = PATTERN.match(tag.to_s).captures
              c[0..4] << (c[5].nil? ? c[6] : c[5])  << c[7] # TODO c[7] is grandfathered, throw a NotImplemented exception here?
            rescue
              false
            end