1 files changed, 7 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c
index 6b7cced13..de8a15ba9 100644
--- a/src/string.c
+++ b/src/string.c
@@ -770,6 +770,13 @@ mrb_str_modify_keep_ascii(mrb_state *mrb, struct RString *s)
   }
 }
 
+MRB_API void
+mrb_str_modify(mrb_state *mrb, struct RString *s)
+{
+  mrb_str_modify_keep_ascii(mrb, s);
+  RSTR_UNSET_ASCII_FLAG(s);
+}
+
 MRB_API mrb_value
 mrb_str_resize(mrb_state *mrb, mrb_value str, mrb_int len)
 {