# File cli/ruby-debug/commands/irb.rb, line 51
    def execute
      unless @state.interface.kind_of?(LocalInterface)
        print "Command is available only in local mode.\n"
        throw :debug_error
      end

      save_trap = trap("SIGINT") do
        throw :IRB_EXIT, :cont if $debug_in_irb
      end

      $debug_in_irb = true
      cont = IRB.start_session(get_binding)
      if cont == :cont
        @state.proceed 
      else
        file = @state.context.frame_file(0)
        line = @state.context.frame_line(0)
        CommandProcessor.print_location_and_text(file, line)
        @state.previous_line = nil
      end

    ensure
      $debug_in_irb = false
      trap("SIGINT", save_trap) if save_trap
    end