GNUmifluz: TAILQ_INSERT_AFTER

do { \
 if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
 (elm)->field.tqe_next->field.tqe_prev = \
 &(elm)->field.tqe_next; \
 else \
 (head)->tqh_last = &(elm)->field.tqe_next; \
 (listelm)->field.tqe_next = (elm); \
 (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
} while (0)