class RDoc::I18n::Text

def parse(&block)
  paragraph = ''
  paragraph_start_line = 0
  line_no = 0
  each_line(@raw) do |line|
    line_no += 1
    case line
    when /\A\s*\z/
      if paragraph.empty?
        emit_empty_line_event(line, line_no, &block)
      else
        paragraph += line
        emit_paragraph_event(paragraph, paragraph_start_line, line_no,
                             &block)
        paragraph = ''
      end
    else
      paragraph_start_line = line_no if paragraph.empty?
      paragraph += line
    end
  end
  unless paragraph.empty?
    emit_paragraph_event(paragraph, paragraph_start_line, line_no, &block)
  end
end