118 	struct eqn_node	*eqn; /* active equation parser */  member
739 	r->last_eqn = r->eqn = NULL;  in roff_free1()
1100 	eqn_box_free(n->eqn);  in roff_node_free()
1804 	if (len > 80 && r->tbl == NULL && r->eqn == NULL &&  in roff_parseln()
1816 	    (r->eqn == NULL || r->eqn_inline)) {  in roff_parseln()
1853 	if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {  in roff_parseln()
1854 		eqn_read(r->eqn, buf->buf + ppos);  in roff_parseln()
1966 	if (r->eqn != NULL) {  in roff_endparse()
1968 		    r->eqn->node->line, r->eqn->node->pos, "EQ");  in roff_endparse()
1969 		eqn_parse(r->eqn);  in roff_endparse()
1970 		r->eqn = NULL;  in roff_endparse()
3341 	cp2 = strchr(cp1, r->eqn == NULL ?  in roff_eqndelim()
3352 		if (r->eqn == NULL)  in roff_eqndelim()
3362 	if (r->eqn == NULL) {  in roff_eqndelim()
3373 		if (r->eqn != NULL)  in roff_eqndelim()
3386 	r->eqn_inline = r->eqn == NULL;  in roff_eqndelim()
3400 	n->eqn = eqn_box_new();  in roff_EQ()
3404 	assert(r->eqn == NULL);  in roff_EQ()
3409 	r->eqn = r->last_eqn;  in roff_EQ()
3410 	r->eqn->node = n;  in roff_EQ()
3422 	if (r->eqn != NULL) {  in roff_EN()
3423 		eqn_parse(r->eqn);  in roff_EN()
3424 		r->eqn = NULL;  in roff_EN()