1 files changed, 3 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/remove_method.rb b/activesupport/lib/active_support/core_ext/module/remove_method.rb
index 719071d1c2..8a2569a7d0 100644
--- a/activesupport/lib/active_support/core_ext/module/remove_method.rb
+++ b/activesupport/lib/active_support/core_ext/module/remove_method.rb
@@ -1,10 +1,13 @@
 class Module
+  # Remove the named method, if it exists.
   def remove_possible_method(method)
     if method_defined?(method) || private_method_defined?(method)
       undef_method(method)
     end
   end
 
+  # Replace the existing method definition, if there is one, with the contents
+  # of the block.
   def redefine_method(method, &block)
     remove_possible_method(method)
     define_method(method, &block)