}

func (c *rootBuilder) extend(p *parseState, s line) (line, bool) {
	panic("root extend")
}

var news = []func(*parseState, line) (line, bool){
	newQuote,
	newATXHeading,
	newSetextHeading,
	newHR,
	newListItem,
	newHTML,
	newFence,
	newPre,
}

func (s *line) peek() byte {
	if s.spaces > 0 {
		return ' '
	}
	if s.i >= len(s.text) {
		return 0
	}
	return s.text[s.i]