docs: def replace_f(self, path, arg_name=None):
          """Replace files"""
          root, file = os.path.split(path)
  
          pattern = re.compile(r'(\<\<\<)([A-Za-z_]+)(\>\>\>)')
          file_path = path
          fh, abs_path = mkstemp()
          with open(abs_path, 'w') as new_file:
              with open(file_path) as old_file:
                  for line in old_file:
                      for (o, var_name, c) in re.findall(pattern, line):
                          line = self.handle_args(line, var_name, arg_name)
                      new_file.write(line)
          os.close(fh)
          # Remove original file
          os.remove(file_path)
          # Move new file
          shutil.move(abs_path, file_path)
  
          pattern = re.compile(r'(\[\[)([A-Za-z_]+)(\]\])')
          for (o, var_name, c) in re.findall(pattern, file):
              file = self.handle_args(file, var_name, isfilename=True)
          os.rename(path, os.path.join(root, file))