2464                          const char *from_s, Py_ssize_t from_len,  in replace_delete_substring()  argument
2476                             from_s, from_len,  in replace_delete_substring()
2484     result_len = self_len - (count * from_len);  in replace_delete_substring()
2497                                 from_s, from_len,  in replace_delete_substring()
2506         start = next+from_len;  in replace_delete_substring()
2560                            const char *from_s, Py_ssize_t from_len,  in replace_substring_in_place()  argument
2575                             from_s, from_len,  in replace_substring_in_place()
2591     Py_MEMCPY(start, to_s, from_len);  in replace_substring_in_place()
2592     start += from_len;  in replace_substring_in_place()
2597                                 from_s, from_len,  in replace_substring_in_place()
2601         Py_MEMCPY(start+offset, to_s, from_len);  in replace_substring_in_place()
2602         start += offset+from_len;  in replace_substring_in_place()
2674                   const char *from_s, Py_ssize_t from_len,  in replace_substring()  argument
2687                             from_s, from_len,  in replace_substring()
2698     if (to_len - from_len > (PY_SSIZE_T_MAX - self_len) / count) {  in replace_substring()
2702     result_len = self_len + count * (to_len - from_len);  in replace_substring()
2713                                 from_s, from_len,  in replace_substring()
2722             start += from_len;  in replace_substring()
2729             start = next+from_len;  in replace_substring()
2741     const char *from_s, Py_ssize_t from_len,  in replace()  argument
2753         (from_len == 0 && to_len == 0)) {  in replace()
2760     if (from_len == 0) {  in replace()
2776         if (from_len == 1) {  in replace()
2780             return replace_delete_substring(self, from_s, from_len, maxcount);  in replace()
2786     if (from_len == to_len) {  in replace()
2787         if (from_len == 1) {  in replace()
2795                 self, from_s, from_len, to_s, to_len, maxcount);  in replace()
2800     if (from_len == 1) {  in replace()
2805         return replace_substring(self, from_s, from_len, to_s, to_len, maxcount);  in replace()
2822     Py_ssize_t from_len, to_len;  in string_replace()  local
2829         from_len = PyString_GET_SIZE(from);  in string_replace()
2836     else if (PyObject_AsCharBuffer(from, &from_s, &from_len))  in string_replace()
2852                                from_s, from_len,  in string_replace()