class Haml::Parser

def handle_multiline(line)
  return unless is_multiline?(line.text)
  line.text.slice!(-1)
  while new_line = raw_next_line.first
    break if new_line == :eod
    next if new_line.strip.empty?
    break unless is_multiline?(new_line.strip)
    line.text << new_line.strip[0...-1]
  end
  un_next_line new_line
end