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-rw-r--r--py/objstrunicode.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/py/objstrunicode.c b/py/objstrunicode.c
index e6ca35acbf..d70b33f8fe 100644
--- a/py/objstrunicode.c
+++ b/py/objstrunicode.c
@@ -330,8 +330,10 @@ STATIC mp_obj_t str_it_iternext(mp_obj_t self_in) {
mp_obj_str_it_t *self = self_in;
GET_STR_DATA_LEN(self->str, str, len);
if (self->cur < len) {
- mp_obj_t o_out = mp_obj_new_str((const char*)str + self->cur, 1, true);
- self->cur += 1;
+ const byte *cur = str + self->cur;
+ const byte *end = utf8_next_char(str + self->cur);
+ mp_obj_t o_out = mp_obj_new_str((const char*)cur, end - cur, true);
+ self->cur += end - cur;
return o_out;
} else {
return MP_OBJ_STOP_ITERATION;