code: def get_tagged_sections(book_dir=BOOK_PATH, include_tags=None):
      
      return [(filepath, tag_lines(lines, include_tags=include_tags)) for filepath, lines in get_lines(book_dir)]
docs: Get list of (adoc_file_path, (adoc_syntax_tag, raw_line_str))
  
      >>> get_tagged_sections()
      [('...src/nlpia/data/book/Appendix F -- Glossary.asc', <generator object filter_tagged_lines at ...>)]