16 		p->start = Malloc(QUANTA*sizeof(*p->start));  in newbuf()
17 		p->end = p->start+QUANTA;  in newbuf()
19 	p->current = p->start;  in newbuf()
20 	*p->start = 0;  in newbuf()
39 	n = p->end-p->start+QUANTA;  in growbuf()
42 		if (f->end-f->start >= n) {  in growbuf()
43 			memcpy(f->start, p->start, p->end-p->start);  in growbuf()
44 			cp = f->start;  in growbuf()
45 			f->start = p->start;  in growbuf()
46 			p->start = cp;  in growbuf()
50 			f->current = f->start;  in growbuf()
55 		p->start = Realloc(p->start, n);  in growbuf()
56 		p->end = p->start+n;  in growbuf()
58 	p->current = p->start+n-QUANTA;  in growbuf()