--TEST-- sandbox tag --TEMPLATE-- {%- sandbox %} {%- include "foo.twig" %} {% if 1 %} {%- include "foo.twig" %} {% endif %} {%- endsandbox %} --TEMPLATE(foo.twig)-- foo --EXCEPTION-- Twig\Error\SyntaxError: Only "include" tags are allowed within a "sandbox" section in "index.twig" at line 5.