lib/active_support/configurable.rb in activesupport-4.1.0.beta2 vs lib/active_support/configurable.rb in activesupport-4.1.0.rc1

@@ -105,10 +105,10 @@
       #   User.hair_colors # => [:brown, :black, :blonde, :red]
       def config_accessor(*names)
         options = names.extract_options!
 
         names.each do |name|
-          raise NameError.new('invalid config attribute name') unless name =~ /^[_A-Za-z]\w*$/
+          raise NameError.new('invalid config attribute name') unless name =~ /\A[_A-Za-z]\w*\z/
 
           reader, reader_line = "def #{name}; config.#{name}; end", __LINE__
           writer, writer_line = "def #{name}=(value); config.#{name} = value; end", __LINE__
 
           singleton_class.class_eval reader, __FILE__, reader_line