1 files changed, 15 insertions, 0 deletions
diff --git a/mrblib/00class.rb b/mrblib/00class.rb
index 39e0d5091..f3762e8d0 100644
--- a/mrblib/00class.rb
+++ b/mrblib/00class.rb
@@ -8,4 +8,19 @@ class Module
   def attr(name)
     attr_reader(name)
   end
+
+  # 15.2.2.4.27
+  def include(*args)
+    args.reverse.each do |m|
+      m.append_features(self)
+      m.included(self)
+    end
+  end
+
+  def prepend(*args)
+    args.reverse.each do |m|
+      m.prepend_features(self)
+      m.prepended(self)
+    end
+  end
 end