No private def

actionview/lib/action_view/helpers/url_helper.rb

@@ -42,11 +42,12 @@ module ActionView
         end
       end
 
-      private def _back_url # :nodoc:
+      def _back_url # :nodoc:
         _filtered_referrer || "javascript:history.back()"
       end
+      private :_back_url
 
-      private def _filtered_referrer # :nodoc:
+      def _filtered_referrer # :nodoc:
         if controller.respond_to?(:request)
           referrer = controller.request.env["HTTP_REFERER"]
           if referrer && URI(referrer).scheme != "javascript"
@@ -55,6 +56,7 @@ module ActionView
         end
       rescue URI::InvalidURIError
       end
+      private :_filtered_referrer
 
       # Creates an anchor element of the given +name+ using a URL created by the set of +options+.
       # See the valid options in the documentation for +url_for+. It's also possible to

actionview/lib/action_view/layouts.rb

@@ -305,12 +305,13 @@ module ActionView
               end
             RUBY
           when Proc
-            private define_method :_layout_from_proc, &_layout
+            define_method :_layout_from_proc, &_layout
             <<-RUBY
               result = _layout_from_proc(#{_layout.arity == 0 ? '' : 'self'})
               return #{default_behavior} if result.nil?
               result
             RUBY
+            private :_layout_from_proc
           when false
             nil
           when true

activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb

@@ -221,7 +221,7 @@ module ActiveRecord
       end
 
       class_methods do
-        private def define_column_methods(*column_types) # :nodoc:
+        def define_column_methods(*column_types) # :nodoc:
           column_types.each do |column_type|
             module_eval <<-RUBY, __FILE__, __LINE__ + 1
               def #{column_type}(*names, **options)
@@ -231,6 +231,7 @@ module ActiveRecord
             RUBY
           end
         end
+        private :define_column_methods
       end
     end