966   ptrdiff_t pos_byte;  variable
969   pos_byte = XFIXNUM (bytepos);
970   if (pos_byte < BEG_BYTE || pos_byte > Z_BYTE)
977     while (!CHAR_HEAD_P (FETCH_BYTE (pos_byte)))
978       pos_byte--;
979   return make_fixnum (BYTE_TO_CHAR (pos_byte));
1059   register ptrdiff_t pos_byte;  variable
1063       pos_byte = PT_BYTE;
1064       if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE)
1069       pos_byte = marker_byte_position (pos);
1070       if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE)
1079       pos_byte = CHAR_TO_BYTE (p);
1082   return make_fixnum (FETCH_CHAR (pos_byte));
1092   register ptrdiff_t pos_byte;  variable
1096       pos_byte = PT_BYTE;
1102       pos_byte = marker_byte_position (pos);
1104       if (pos_byte <= BEGV_BYTE || pos_byte > ZV_BYTE)
1114       pos_byte = CHAR_TO_BYTE (p);
1119       pos_byte -= prev_char_len (pos_byte);
1120       XSETFASTINT (val, FETCH_CHAR (pos_byte));
1124       pos_byte--;
1125       XSETFASTINT (val, FETCH_BYTE (pos_byte));
2242   register ptrdiff_t pos, pos_byte, stop, i, len, end_byte;  variable
2294   pos_byte = CHAR_TO_BYTE (pos);
2313   if (pos_byte < GPT_BYTE)
2317       ptrdiff_t pos_byte_next = pos_byte;
2319       if (pos_byte >= stop)
2321 	  if (pos_byte >= end_byte) break;
2324       p = BYTE_POS_ADDR (pos_byte);
2329       if (pos_byte_next - pos_byte == len
2367 		     || (pos_byte > BEG_BYTE
2368 			 && ! ASCII_CHAR_P (FETCH_BYTE (pos_byte - 1))))))
2381 	      if (pos_byte_next > pos_byte)
2400       pos_byte = pos_byte_next;
2425 check_translation (ptrdiff_t pos, ptrdiff_t pos_byte, ptrdiff_t end,  in check_translation()  argument
2453 		  unsigned char *p = BYTE_POS_ADDR (pos_byte);  in check_translation()
2465 		  pos_byte += len1;  in check_translation()
2509   ptrdiff_t pos_byte = CHAR_TO_BYTE (pos);
2517       unsigned char *p = BYTE_POS_ADDR (pos_byte);
2603 		  val = check_translation (pos, pos_byte, end_pos, val);
2606 		      pos_byte += len;
2623 	      pos_byte += SBYTES (string);
2630       pos_byte += len;