M_COPYALL
if (len == M_COPYALL) {
if (len != M_COPYALL) {
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)
# define M_DUPLICATE(x) m_copy((x), 0, M_COPYALL)