diff options
Diffstat (limited to 'src/array.c')
| -rw-r--r-- | src/array.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/array.c b/src/array.c index c7499ab36..e3381e213 100644 --- a/src/array.c +++ b/src/array.c @@ -1071,7 +1071,9 @@ join_ary(mrb_state *mrb, mrb_value ary, mrb_value sep, mrb_value list) MRB_API mrb_value mrb_ary_join(mrb_state *mrb, mrb_value ary, mrb_value sep) { - sep = mrb_obj_as_string(mrb, sep); + if (!mrb_nil_p(sep)) { + sep = mrb_obj_as_string(mrb, sep); + } return join_ary(mrb, ary, sep, mrb_ary_new(mrb)); } |