def _last_index(self, s):
        self.set_index(max(0, self._find_one_after_last_labeled_index() - 1))
def _prefix(kindpats):
    """Whether all the patterns match a prefix (i.e. recursively)"""
    for kind, pat, source in kindpats:
        if kind not in ("path", "relpath"):
            return False
    return True