diff --git a/ChangeLog b/ChangeLog
index 60ff5f9ce4..d19f99270f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jan 26 07:48:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* enumerator.c (enumerator_init_copy): need to copy internal
+	  structure on clone and dup.  [ruby-dev:30192]
+
 Wed Jan 24 20:34:51 2007  Kouhei Sutou  <kou@cozmixng.org>
 
 	* test/ruby/test_iterator.rb: removed a needless workaround.
diff --git a/enumerator.c b/enumerator.c
index 3f176a77a9..83cdff9c58 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -261,6 +261,21 @@ enumerator_initialize(int argc, VALUE *argv, VALUE obj)
     return enumerator_init(obj, recv, meth, argc, argv);
 }
 
+/* :nodoc: */
+static VALUE
+enumerator_init_copy(VALUE obj, VALUE orig)
+{
+    struct enumerator *ptr0 = enumerator_ptr(orig);
+    struct enumerator *ptr1 = enumerator_ptr(obj);
+
+    ptr1->method = ptr0->method;
+    ptr1->proc = ptr0->proc;
+    ptr1->iter = ptr0->iter;
+    ptr1->args = ptr0->args;
+
+    return obj;
+}
+
 VALUE
 rb_enumeratorize(VALUE obj, VALUE meth, int argc, VALUE *argv)
 {
@@ -351,6 +366,7 @@ Init_Enumerator(void)
 
     rb_define_alloc_func(rb_cEnumerator, enumerator_allocate);
     rb_define_method(rb_cEnumerator, "initialize", enumerator_initialize, -1);
+    rb_define_method(rb_cEnumerator, "initialize_copy", enumerator_init_copy, 1);
     rb_define_method(rb_cEnumerator, "each", enumerator_each, 0);
     rb_define_method(rb_cEnumerator, "with_index", enumerator_with_index, 0);
     rb_define_method(rb_cEnumerator, "to_splat", enumerator_to_splat, 0);
diff --git a/version.h b/version.h
index c109e95ca1..989ff668b0 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-01-23"
+#define RUBY_RELEASE_DATE "2007-01-26"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20070123
+#define RUBY_RELEASE_CODE 20070126
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 23
+#define RUBY_RELEASE_DAY 26
 
 RUBY_EXTERN const char ruby_version[];
 RUBY_EXTERN const char ruby_release_date[];