docs: def parsemsg(s): # stolen from twisted.words
      """Breaks a message from an IRC server into its prefix, command, and arguments.
      """
      prefix = ''
      trailing = []
      if not s:
          raise Exception("Empty line.")
      if s[0] == ':':
          prefix, s = s[1:].split(' ', 1)
      if s.find(' :') != -1:
          s, trailing = s.split(' :', 1)
          args = s.split()
          args.append(trailing)
      else:
          args = s.split()
      command = args.pop(0)
      return prefix, command, args