def parse(self, *args, **kw):
        """Parse command line, fill `fuse_args` attribute."""

        ev = 'errex' in kw and kw.pop('errex')
        if ev and not isinstance(ev, int):
            raise TypeError("error exit value should be an integer")

        try:
            self.cmdline = self.parser.parse_args(*args, **kw)
        except OptParseError:
          if ev:
              sys.exit(ev)
          raise

        return self.fuse_args
Parse command line, fill `fuse_args` attribute.