Block assignment scope is different than inline assignment

I want to set a variable in a child template that will be rendered in the parent template. If I use block assignment, nothing is rendered. If I use inline assignment, it works as expected. I am using Jinja 2.8 with Python 2.

base.html:

{{ content }}

bad.html with block assignment, nothing rendered:

{% extends 'base.html' %}
{% set content %}
Hello, World!
{% endset %}

good.html, renders correctly:

{% extends 'base.html' %}
{% set content = 'Hello, World!' %}

[arkafon]

Got this problem too. Simple test:

{% extends "..." %}
...
{% set aaa = 'test' %}
{% set bbb %}
    <a href="/">bar</a>
{% endset %}
...
{% block some_block %}
 {{ aaa }} {# renders 'test' #}
 {{ bbb }} {# renders empty string #}
{% endblock %}

[mitsuhiko]

Changed in 45b59b522a542c21611214b352df049a3b6dbcb4