# File lib/authlogic/acts_as_authentic/login.rb, line 64
        def validates_format_of_login_field_options(value = nil)
          rw_config(:validates_format_of_login_field_options, value, {:with => Authlogic::Regex.login, :message => I18n.t('error_messages.login_invalid', :default => "should use only letters, numbers, spaces, and .-_@ please.")})
        end