--TEST--
Block names are unique per template
--TEMPLATE--
{% extends 'layout' %}
{% block content -%}
    {% filter title -%}
        second
    {% endfilter %}
{% endblock %}
--TEMPLATE(layout)--
{% filter title -%}
    first
{% endfilter %}
{% block content %}{% endblock %}
--DATA--
return []
--EXPECT--
First
Second