code: def _gitignore(root):
      
  
      gitignore_path = os.path.join(root, '.gitignore')
  
      dir_patterns = ['.git']
      file_patterns = []
  
      if not os.path.exists(gitignore_path):
          return (dir_patterns, file_patterns)
  
      with open(gitignore_path, 'r', encoding='utf-8') as f:
          for line in f.readlines():
              line = line.strip()
              if not line:
                  continue
              if line.startswith('#'):
                  continue
              if '**' in line:
                  raise NotImplementedError('gitignore ** wildcards are not implemented')
              if line.startswith('!'):
                  raise NotImplementedError('gitignore pattern negation is not implemented')
              if line.startswith('/'):
                  raise NotImplementedError('gitignore anchored patterns are not implemented')
              if line.startswith('\\#'):
                  line = '#' + line[2:]
              if line.startswith('\\!'):
                  line = '!' + line[2:]
              if line.endswith('/'):
                  dir_patterns.append(line[:-1])
              else:
                  file_patterns.append(line)
  
      return (dir_patterns, file_patterns)
docs: Parses a .gitignore file and returns patterns to match dirs and files.
      Only basic gitignore patterns are supported. Pattern negation, ** wildcards
      and anchored patterns are not currently implemented.
  
      :param root:
          A unicode string of the path to the git repository
  
      :return:
          A 2-element tuple:
           - 0: a list of unicode strings to match against dirs
           - 1: a list of unicode strings to match against dirs and files