# File lib/pry/command_set.rb, line 188
    def find_command_by_match_or_listing(match_or_listing)
      cmd = (@commands[match_or_listing] ||
        Pry::Helpers::BaseHelpers.find_command(match_or_listing, @commands))
      cmd or raise ArgumentError, "Cannot find a command: '#{match_or_listing}'!"
    end