Describe an ability to provide messages array for all specified validator (without requirements to specify validator index).

So the code:

$validators = array(
    'month' => array(
        new Zend_Validate_Between(1, 12),
        'messages' => array(
            array(
                Zend_Validate_Between::NOT_BETWEEN =>
                    'Month value %value% must be between ' .
                    '%min% and %max%',
                Zend_Validate_Between::NOT_BETWEEN_STRICT =>
                    'Month value %value% must be strictly between ' .
                    '%min% and %max%'
            )
        )
    )
);

will be transformed to

$validators = array(
    'month' => array(
        new Zend_Validate_Between(1, 12),
        'messages' => array(
                Zend_Validate_Between::NOT_BETWEEN =>
                    'Month value %value% must be between ' .
                    '%min% and %max%',
                Zend_Validate_Between::NOT_BETWEEN_STRICT =>
                    'Month value %value% must be strictly between ' .
                    '%min% and %max%'
        )
    )
);