set_buflocal_tfu_callback(buf_T *buf UNUSED)
{
    free_callback(&buf->b_tfu_cb);
    if (tfu_cb.cb_name != NULL && *tfu_cb.cb_name != NUL)
	copy_callback(&buf->b_tfu_cb, &tfu_cb);
}
set_buflocal_tfu_callback(buf_T *buf UNUSED)
{
    free_callback(&buf->b_tfu_cb);
    if (tfu_cb.cb_name != NULL && *tfu_cb.cb_name != NUL)
	copy_callback(&buf->b_tfu_cb, &tfu_cb);
}