- 'pattern' => '/^[[:graph:][:space:]]+$/i',
+ 'pattern' => '/\A(?=\d{0,31}+[a-z])(?=[a-z]{0,31}+\d)[a-z\d]{8,32}+\z/i',

            if ($Customer->getPassword() === $app['config']['default_password']) {
                $Customer->setPassword($previous_password);
            } else {
                if ($Customer->getSalt() === null) {
                    $Customer->setSalt($app['eccube.repository.customer']->createSalt(5));
                }
                $Customer->setPassword(
                    $app['eccube.repository.customer']->encryptPassword($app, $Customer)
                );
            }