DTL: Extending a block inside a for loop doesn't work

[wolfram]

See the use case example here ​http://static.uxebu.com/~cain/dtl-extends-problem/

Basically I am overridding a template block which is inside a for loop by an extending template but the block is not properly replaced.

{% for i in items %}

{% block inner_block %} {% endblock %}

{% endfor %}

in the extending template I do

{% extends base_tpl_path %}

{% block inner_block %}

item: {{ i }}<br /> I am the overriding inner block

{% endblock %}

this only overrides the last occurence of the block in the for-loop

[ben hockey]

dtl is unsupported. any further patches are welcome.