# File lib/termtter/system_extensions.rb, line 58
    def readline(*a)
      str = old_readline(*a)
      out = ''
      loop do
        begin
          out << $iconv_sj_to_u8.iconv(str)
          break
        rescue Iconv::Failure
          out << "#{$!.success}?"
          str = $!.failed[1..-1]
        end
      end
      return out
    end