'Return a mergeable gettext.GNUTranslations instance.
A convenience wrapper. By default gettext uses \'fallback=False\'.
Using param `use_null_fallback` to avoid confusion with any other
references to \'fallback\'.'

def _new_gnu_trans(self, localedir, use_null_fallback=True):

    return gettext_module.translation(domain=self.domain, localedir=localedir, languages=[self.__locale], codeset='utf-8', fallback=use_null_fallback)
