@classmethod
def pattern_to_regex(cls, pattern):
    """
		Convert the pattern into an uncompiled regular expression.

		*pattern* (:class:`str`) is the pattern to convert into a regular
		expression.

		Returns the uncompiled regular expression (:class:`str` or :data:`None`),
		and whether matched files should be included (:data:`True`),
		excluded (:data:`False`), or is a null-operation (:data:`None`).

			.. NOTE:: The default implementation simply returns *pattern* and
			   :data:`True`.
		"""
    return pattern, True
