All the little details

config/initializers/language_additions.rb

@@ -0,0 +1,25 @@
+class NilClass
+  def include?(*args)
+    false
+  end
+end
+
+module MethodPrependAndAppend
+  def before_method(m, &blk)
+    alias_method :"#{m}_before_extending_before", m
+    define_method m do |*args|
+      instance_eval(&blk)
+      send :"#{m}_before_extending_before", *args
+    end
+  end
+
+  def after_method(m, &blk)
+    alias_method :"#{m}_before_extending_after", m
+    define_method m do |*args|
+      result = send :"#{m}_before_extending_after", *args
+      instance_eval(result, &blk)
+    end
+  end
+end
+
+Class.send :include, MethodPrependAndAppend