* array.c (rb_ary_collect_bang, rb_ary_select): Return an

  enumerator if no block is given.

* dir.c (dir_each, dir_foreach): Return an enumerator if no block
  is given.

* enum.c (enum_partition, enum_sort_by): Ditto.

* gc.c (os_each_obj): Ditto.

* hash.c (rb_hash_delete_if, rb_hash_reject_bang, rb_hash_select,
  rb_hash_each_value, rb_hash_each_key, rb_hash_each_pair,
  env_each_key, env_each_value, env_each, env_each_pair,
  env_reject_bang, env_delete_if, env_select): Ditto.

* numeric.c (num_step, int_upto, int_downto, int_dotimes): Ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16008 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 2 deletions

diff --git a/gc.c b/gc.c
index ed22425b69..401c0fadf8 100644
--- a/gc.c
+++ b/gc.c
@@ -1669,16 +1669,21 @@ os_obj_of(of)
  */
 
 static VALUE
-os_each_obj(argc, argv)
+os_each_obj(argc, argv, os)
     int argc;
     VALUE *argv;
+    VALUE os;
 {
     VALUE of;
 
     rb_secure(4);
-    if (rb_scan_args(argc, argv, "01", &of) == 0) {
+    if (argc == 0) {
 	of = 0;
     }
+    else {
+	rb_scan_args(argc, argv, "01", &of);
+    }
+    RETURN_ENUMERATOR(os, 1, &of);
     return os_obj_of(of);
 }