--- library/Zend/Form/Element/Captcha.php	(revisión: 16491)
+++ library/Zend/Form/Element/Captcha.php	(copia de trabajo)
@@ -27,11 +27,11 @@
 
 /**
  * Generic captcha element
- * 
+ *
  * This element allows to insert CAPTCHA into the form in order
  * to validate that human is submitting the form. The actual
  * logic is contained in the captcha adapter.
- * 
+ *
  * @see http://en.wikipedia.org/wiki/Captcha
  *
  * @category   Zend
@@ -40,7 +40,7 @@
  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
-class Zend_Form_Element_Captcha extends Zend_Form_Element_Xhtml 
+class Zend_Form_Element_Captcha extends Zend_Form_Element_Xhtml
 {
     /**
      * @const string Captch plugin type constant
@@ -53,24 +53,24 @@
      * @var Zend_Captcha_Adapter
      */
     protected $_captcha;
-    
+
     /**
      * Get captcha adapter
-     * 
+     *
      * @return Zend_Captcha_Adapter
      */
-    public function getCaptcha() 
+    public function getCaptcha()
     {
         return $this->_captcha;
     }
-    
+
     /**
      * Set captcha adapter
-     * 
+     *
      * @param string|array|Zend_Captcha_Adapter $captcha
      * @param array $options
      */
-    public function setCaptcha($captcha, $options = array()) 
+    public function setCaptcha($captcha, $options = array())
     {
         if ($captcha instanceof Zend_Captcha_Adapter) {
             $instance = $captcha;
@@ -99,7 +99,7 @@
                 }
             }
         }
-        
+
         $this->_captcha = $instance;
         $this->_captcha->setName($this->getName());
         return $this;
@@ -112,18 +112,18 @@
      * - string: name of element
      * - array: options with which to configure element
      * - Zend_Config: Zend_Config with options for configuring element
-     * 
-     * @param  string|array|Zend_Config $spec 
+     *
+     * @param  string|array|Zend_Config $spec
      * @return void
      */
-    public function __construct($spec, $options = null) 
+    public function __construct($spec, $options = null)
     {
         parent::__construct($spec, $options);
         $this->setAllowEmpty(true)
              ->setRequired(true)
              ->setAutoInsertNotEmptyValidator(false)
              ->addValidator($this->getCaptcha(), true);
-    }    
+    }
 
     /**
      * Return all attributes
@@ -147,8 +147,8 @@
      * Set options
      *
      * Overrides to allow passing captcha options
-     * 
-     * @param  array $options 
+     *
+     * @param  array $options
      * @return Zend_Form_Element_Captcha
      */
     public function setOptions(array $options)
@@ -164,11 +164,11 @@
         }
         return parent::setOptions($options);
     }
-    
+
     /**
      * Render form element
-     * 
-     * @param  Zend_View_Interface $view 
+     *
+     * @param  Zend_View_Interface $view
      * @return string
      */
     public function render(Zend_View_Interface $view = null)
@@ -176,29 +176,24 @@
         $captcha    = $this->getCaptcha();
         $captcha->setName($this->getFullyQualifiedName());
 
-        $decorators = $this->getDecorators();
-
         $decorator  = $captcha->getDecorator();
         if (!empty($decorator)) {
-            array_unshift($decorators, $decorator);
+	    $this->addDecorator($decorator);
         }
 
-        $decorator = array('Captcha', array('captcha' => $captcha));
-        array_unshift($decorators, $decorator);
+	$this->addDecorator('Captcha', array('captcha' => $captcha));
 
-        $this->setDecorators($decorators);
-
         $this->setValue($this->getCaptcha()->generate());
 
         return parent::render($view);
     }
-    
+
     /**
      * Retrieve plugin loader for validator or filter chain
      *
-     * Support for plugin loader for Captcha adapters 
-     * 
-     * @param  string $type 
+     * Support for plugin loader for Captcha adapters
+     *
+     * @param  string $type
      * @return Zend_Loader_PluginLoader
      * @throws Zend_Loader_Exception on invalid type.
      */
@@ -217,14 +212,14 @@
             return parent::getPluginLoader($type);
         }
     }
-    
+
     /**
      * Add prefix path for plugin loader for captcha adapters
      *
      * This method handles the captcha type, the rest is handled by
-     * the parent 
-     *  
-     * @param  string $path 
+     * the parent
+     *
+     * @param  string $path
      * @return Zend_Form_Element
      * @see Zend_Form_Element::addPrefixPath
      */
@@ -246,10 +241,10 @@
                 return parent::addPrefixPath($prefix, $path, $type);
         }
     }
-    
+
     /**
      * Load default decorators
-     * 
+     *
      * @return void
      */
     public function loadDefaultDecorators()
@@ -269,9 +264,9 @@
 
     /**
      * Is the captcha valid?
-     * 
-     * @param  mixed $value 
-     * @param  mixed $context 
+     *
+     * @param  mixed $value
+     * @param  mixed $context
      * @return boolean
      */
     public function isValid($value, $context = null)