ticks := strings.Repeat("`", longestSequence(x.Text, '`')+1)
	buf.WriteString(ticks)
	if x.Text[0] == '`' {
		buf.WriteByte(' ')
	}
	buf.WriteString(x.Text)
	if x.Text[len(x.Text)-1] == '`' {
		buf.WriteByte(' ')
	}
	buf.WriteString(ticks)
}

// longestSequence returns the length of the longest sequence of consecutive bytes b in s.
func longestSequence(s string, b byte) int {
	max := 0
	cur := 0