code: def main():
      tex_file = sys.argv[1]
      with open(tex_file, "r") as f:
          lines = f.read().split("\n")
  
      _unnumber_chaps_and_secs(lines)
      _sec_to_chap(lines)
      # lines = _delete_discussions_title(lines)
      _protect_hyperlink_in_caption(lines)
      _pagenumbering(lines)
      _replace_chars_in_chapter_title_and_caption(lines)
      _remove_appendix_numbering_and_rename_bib(lines)
      _fit_chapter_titles(lines)
      _remove_footnote_trailing_space(lines)
      _add_extra_line_before_endbib(lines)
      _remove_index(lines)
      _fix_indent_at_chap_start(lines)
  
      with open(tex_file, "w") as f:
          f.write("\n".join(lines))
  
      pdf_dir = os.path.dirname(tex_file)
  
file_path: d2l-en/static/post_latex/main.py
imports: import os
  import re
  import regex
  import sys
label_desc: Use image node_id 15 for calling a global function with example usage: main() without return types