# File lib/pry/commands/edit.rb, line 153
    def input_expression
      case opts[:i]
      when Range
        (_pry_.input_array[opts[:i]] || []).join
      when Fixnum
        _pry_.input_array[opts[:i]] || ""
      else
        raise Pry::CommandError, "Not a valid range: #{opts[:i]}"
      end
    end