1932 	const char *sptr, *q;  in sub()  local
1952 		sptr = t;  in sub()
1953 		adjbuf(&buf, &bufsz, 1+patbeg-sptr, recsize, 0, "sub");  in sub()
1955 		while (sptr < patbeg)  in sub()
1956 			*pb++ = *sptr++;  in sub()
1957 		sptr = getsval(y);  in sub()
1958 		while (*sptr != '\0') {  in sub()
1960 			if (*sptr == '\\') {  in sub()
1961 				backsub(&pb, &sptr);  in sub()
1962 			} else if (*sptr == '&') {  in sub()
1963 				sptr++;  in sub()
1968 				*pb++ = *sptr++;  in sub()
1973 		sptr = patbeg + patlen;  in sub()
1974 		if ((patlen == 0 && *patbeg) || (patlen && *(sptr-1))) {  in sub()
1975 			adjbuf(&buf, &bufsz, 1+strlen(sptr)+pb-buf, 0, &pb, "sub");  in sub()
1976 			while ((*pb++ = *sptr++) != '\0')  in sub()
1994 	const char *q, *t, *sptr;  in gsub()  local
2023 					sptr = rptr;  in gsub()
2024 					while (*sptr != '\0') {  in gsub()
2026 						if (*sptr == '\\') {  in gsub()
2027 							backsub(&pb, &sptr);  in gsub()
2028 						} else if (*sptr == '&') {  in gsub()
2029 							sptr++;  in gsub()
2034 							*pb++ = *sptr++;  in gsub()
2047 				sptr = t;  in gsub()
2048 				adjbuf(&buf, &bufsz, 1+(patbeg-sptr)+pb-buf, recsize, &pb, "gsub");  in gsub()
2049 				while (sptr < patbeg)  in gsub()
2050 					*pb++ = *sptr++;  in gsub()
2051 				sptr = rptr;  in gsub()
2052 				while (*sptr != '\0') {  in gsub()
2054 					if (*sptr == '\\') {  in gsub()
2055 						backsub(&pb, &sptr);  in gsub()
2056 					} else if (*sptr == '&') {  in gsub()
2057 						sptr++;  in gsub()
2062 						*pb++ = *sptr++;  in gsub()
2072 		sptr = t;  in gsub()
2073 		adjbuf(&buf, &bufsz, 1+strlen(sptr)+pb-buf, 0, &pb, "gsub");  in gsub()
2074 		while ((*pb++ = *sptr++) != '\0')  in gsub()
2095 	const char *sptr = *sptr_ptr;  in backsub()  local
2104 	if (sptr[1] == '\\') {  in backsub()
2105 		if (sptr[2] == '\\' && sptr[3] == '&') { /* \\\& -> \& */  in backsub()
2108 			sptr += 4;  in backsub()
2109 		} else if (sptr[2] == '&') {	/* \\& -> \ + matched */  in backsub()
2111 			sptr += 2;  in backsub()
2113 			sptr++;  in backsub()
2114 			*pb++ = *sptr++;  in backsub()
2116 			*pb++ = *sptr++;  in backsub()
2117 			*pb++ = *sptr++;  in backsub()
2119 	} else if (sptr[1] == '&') {	/* literal & */  in backsub()
2120 		sptr++;  in backsub()
2121 		*pb++ = *sptr++;  in backsub()
2123 		*pb++ = *sptr++;  in backsub()
2126 	*sptr_ptr = sptr;  in backsub()