find_def
if (find_def(np->g_nextid) == NULL) {
if ((sp = find_def(speedef->g_nextid)) == NULL) {
if ((sp = find_def(speedef->g_id)) == NULL) {
extern struct Gdef *find_def(char *);
if (find_def(gptr->g_id) != NULL) {
if ((sp = find_def(ttylabel)) == NULL) {