Extending TWIG to add another filter
 

Please could someone help me create an add-on that just adds a TWIG filter that calls a PHP function.


I know the filter works as I currently have it working by editing the core XCart AbstractTwigEngine PHP classes.


When I try to create an add-on extending \XLite\Core\Templating\Twig\Extension\XCart the redeployment of the store hangs at step 6 when it parses the modules.


Thanks,