set_current (Locale)

    # File lib/gettext/locale.rb, line 115
      def set_current(lang, country = nil, charset = nil)
        if lang == nil
          @@current = nil
        else
          if lang.kind_of? Locale::Object
            @@current = lang
          else
            @@current = Locale::Object.new(lang, country, charset)
          end
          @@current.charset ||= @@locale_system_module.get_charset(@@current)
        end
        self
      end