2534 	char *pb = NULL;  in dosub()  local
2572 			if ((pb = buf = (char *) malloc(bufsz)) == NULL)  in dosub()
2595 			adjbuf(&buf, &bufsz, (pb - buf) + (patbeg - start),  in dosub()
2596 				recsize, &pb, "dosub");  in dosub()
2599 				*pb++ = *s++;  in dosub()
2607 			adjbuf(&buf, &bufsz, 5+pb-buf, recsize, &pb, "dosub");  in dosub()
2609 				backsub(&pb, &r);  in dosub()
2612 				adjbuf(&buf, &bufsz, 1+patlen+pb-buf, recsize,  in dosub()
2613 					&pb, "dosub");  in dosub()
2615 					*pb++ = *s++;  in dosub()
2617 				*pb++ = *r++;  in dosub()
2627 		adjbuf(&buf, &bufsz, (pb-buf) + patlen, recsize, &pb, "dosub");  in dosub()
2630 			*pb++ = *s++;  in dosub()
2650 		adjbuf(&buf, &bufsz, 1+strlen(start)+pb-buf, 0, &pb, "dosub");  in dosub()
2651 		while ((*pb++ = *start++) != '\0')  in dosub()
2671 	char *buf, *pb;  in gensub()  local
2714 		pb = buf;  in gensub()
2729 				adjbuf(&buf, &bufsz, (pb - buf) + (patbeg - t) + patlen, recsize, &pb, "gensub");  in gensub()
2734 					*pb++ = *t++;  in gensub()
2743 						adjbuf(&buf, &bufsz, 5+pb-buf, recsize, &pb, "gensub");  in gensub()
2745 							backsub(&pb, &sptr);  in gensub()
2748 							adjbuf(&buf, &bufsz, 1+patlen+pb-buf, recsize, &pb, "gensub");  in gensub()
2750 								*pb++ = *q++;  in gensub()
2752 							*pb++ = *sptr++;  in gensub()
2757 				adjbuf(&buf, &bufsz, 2+pb-buf, recsize, &pb, "gensub");  in gensub()
2758 				*pb++ = *t++;  in gensub()
2759 				if (pb > buf + bufsz)	/* BUG: not sure of this test */  in gensub()
2766 				adjbuf(&buf, &bufsz, 1+(patbeg-sptr)+pb-buf, recsize, &pb, "gensub");  in gensub()
2768 					*pb++ = *sptr++;  in gensub()
2771 					adjbuf(&buf, &bufsz, 5+pb-buf, recsize, &pb, "gensub");  in gensub()
2773 						backsub(&pb, &sptr);  in gensub()
2776 						adjbuf(&buf, &bufsz, 1+patlen+pb-buf, recsize, &pb, "gensub");  in gensub()
2778 							*pb++ = *q++;  in gensub()
2780 						*pb++ = *sptr++;  in gensub()
2785 				if (pb > buf + bufsz)  in gensub()
2791 		adjbuf(&buf, &bufsz, 1+strlen(sptr)+pb-buf, 0, &pb, "gensub");  in gensub()
2792 		while ((*pb++ = *sptr++) != 0)  in gensub()
2794 	done:	if (pb > buf + bufsz)  in gensub()
2796 		*pb = '\0';  in gensub()
2808 	char *pb = *pb_ptr;  in backsub()  local
2820 			*pb++ = '\\';  in backsub()
2821 			*pb++ = '&';  in backsub()
2824 			*pb++ = '\\';  in backsub()
2828 			*pb++ = *sptr++;  in backsub()
2830 			*pb++ = *sptr++;  in backsub()
2831 			*pb++ = *sptr++;  in backsub()
2835 		*pb++ = *sptr++;  in backsub()
2837 		*pb++ = *sptr++;  in backsub()
2839 	*pb_ptr = pb;  in backsub()