61 struct strpush {  struct
62 	struct strpush *prev;	/* preceding string on stack */  argument
82 	struct strpush *strpush; /* for pushing strings at this level */  member
83 	struct strpush basestrpush; /* so pushing one is fast */
193 	while (parsefile->strpush) {  in preadbuffer()
199 		if (parsenleft == -1 && parsefile->strpush->ap != NULL)  in preadbuffer()
277 	if (parsefile->strpush)  in preadateof()
303 	struct strpush *sp;  in pushstring()
307 	if (parsefile->strpush) {  in pushstring()
308 		sp = ckmalloc(sizeof (struct strpush));  in pushstring()
309 		sp->prev = parsefile->strpush;  in pushstring()
310 		parsefile->strpush = sp;  in pushstring()
312 		sp = parsefile->strpush = &(parsefile->basestrpush);  in pushstring()
327 	struct strpush *sp = parsefile->strpush;  in popstring()
340 	parsefile->strpush = sp->prev;  in popstring()
442 	pf->strpush = NULL;  in pushfile()
458 	while (pf->strpush)  in popfile()