slice (ActiveSupport::Multibyte::Handlers::UTF8Handler)

    # File lib/active_support/multibyte/handlers/utf8_handler.rb, line 247
          def slice(str, *args)
            if args.size > 2
              raise ArgumentError, "wrong number of arguments (#{args.size} for 1)" # Do as if we were native
            elsif (args.size == 2 && !(args.first.is_a?(Numeric) || args.first.is_a?(Regexp)))
              raise TypeError, "cannot convert #{args.first.class} into Integer" # Do as if we were native
            elsif (args.size == 2 && !args[1].is_a?(Numeric))
              raise TypeError, "cannot convert #{args[1].class} into Integer" # Do as if we were native
            elsif args[0].kind_of? Range
              cps = u_unpack(str).slice(*args)
              cps.nil? ? nil : cps.pack('U*')
            elsif args[0].kind_of? Regexp
              str.slice(*args)
            elsif args.size == 1 && args[0].kind_of?(Numeric)
              u_unpack(str)[args[0]]
            else
              u_unpack(str).slice(*args).pack('U*')
            end
          end