py/objstr: Catch case of negative "maxsplit" arg to str.rsplit().
Negative values mean no limit on the number of splits so should delegate to
the .split() method.
diff --git a/py/objstr.c b/py/objstr.c
index a1e2235..1d2a280 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -602,6 +602,11 @@
GET_STR_DATA_LEN(args[0], s, len);
mp_int_t splits = mp_obj_get_int(args[2]);
+ if (splits < 0) {
+ // Negative limit means no limit, so delegate to split().
+ return mp_obj_str_split(n_args, args);
+ }
+
mp_int_t org_splits = splits;
// Preallocate list to the max expected # of elements, as we
// will fill it from the end.