switch r {
	case moreSpecific:
		return moreGeneral
	case moreGeneral:
		return moreSpecific
	default:
		return r
	}
}

// isLitOrSingle reports whether the segment is a non-dollar literal or a single wildcard.
func isLitOrSingle(seg segment) bool {
	if seg.wild {
		return !seg.multi
	}
	return seg.s != "/"
}

// describeConflict returns an explanation of why two patterns conflict.