1--TEST--
2"for" tags can be nested
3--TEMPLATE--
4{% for key, item in items %}
5* {{ key }} ({{ loop.length }}):
6{% for value in item %}
7  * {{ value }} ({{ loop.length }})
8{% endfor %}
9{% endfor %}
10--DATA--
11return ['items' => ['a' => ['a1', 'a2', 'a3'], 'b' => ['b1']]]
12--EXPECT--
13* a (2):
14  * a1 (3)
15  * a2 (3)
16  * a3 (3)
17* b (2):
18  * b1 (1)
19