F token_with_escape(a, escape = ‘^’, separator = ‘|’)
   [String] result
   V token = ‘’
   V state = 0
   L(c) a
      I state == 0
         I c == escape
            state = 1
         E I c == separator
            result.append(token)
            token = ‘’
         E
            token ‘’= c
      E I state == 1
         token ‘’= c
         state = 0
   result.append(token)
   R result

print(token_with_escape(‘one^|uno||three^^^^|four^^^|^cuatro|’).map(s -> ‘'’s‘'’).join(‘, ’))