ZF-3160: Nesting calls to Zend_View_Helper_Action renders content from inner call twice.
Nesting a call to Zend_View_Helper_Action in a call to Zend_View_Helper_Action will render the inner call twice, once before the outer call and once within it (as it should be).
In layout:<?php echo $this->action('get', 'sidebar'); ?>
That renders a view script with the following code:
The viewscript returned in <?php echo $this->action('partner', 'email'); ?> is displayed both above
div class="sidebar"> and within it.
If the viewscript contains the same thing, but does not echo the partner/email action (<?php $this->action('partner', 'email'); ?>), it still is rendered above
div class="sidebar">, but no longer inside it.
The latter scenario should not render it at all.