# File lib/pry/default_commands/ls.rb, line 171
        def rubbishness(name)
          name.each_char.map{ |x|
            case x
            when /[A-Z]/
              1
            when '?', '=', '!'
              -2
            else
              0
            end
          }.inject(&:+) + (name.size / 100.0)
        end