roff_node_child
(nch = roff_node_child(n->body)) != NULL &&
(n->tok == MAN_SS && roff_node_child(n->body) == NULL))
(n->tok == MAN_SH && roff_node_child(n->body) == NULL))
nchild = roff_node_child(nbody);
struct roff_node *roff_node_child(struct roff_node *);