How to extends %module_x/templates/xyz.html.twig? My module has a template which would like to extend another module's template. Is there any shortcut like we have in Symfony2?

{% extends 'path_to_module_x:templates/template-x.html.twig' %}
As of https://drupal.org/node/2143557 (committed January 24, 2014) you can now do this:

{% extends "@node/node.html.twig" %}


Note that the 'templates' directory is automatically included.