Prevent aliases Array#append and Array#prepend

f57d515d69

activesupport/lib/active_support/core_ext/array/prepend_and_append.rb

@@ -1,7 +1,7 @@
 class Array
   # The human way of thinking about adding stuff to the end of a list is with append.
-  alias_method :append,  :<<
+  alias_method :append,  :push unless [].respond_to?(:append)
 
   # The human way of thinking about adding stuff to the beginning of a list is with prepend.
-  alias_method :prepend, :unshift
+  alias_method :prepend, :unshift unless [].respond_to?(:prepend)
 end