docs: def format_path(p, quote_spaces=False):
      """Format a path in utf8, quoting it if necessary."""
      if b'\n' in p:
          p = re.sub(b'\n', b'\\n', p)
          quote = True
      else:
          quote = p[0] == b'"' or (quote_spaces and b' ' in p)
      if quote:
          extra = GIT_FAST_IMPORT_NEEDS_EXTRA_SPACE_AFTER_QUOTE and b' ' or b''
          p = b'"' + p + b'"' + extra
      return p