{-- #1 : basic blocks  --}
{% block 'foo' %}
    foo
{% end_block %}

{-- #2 : nested blocks + end_block could have name  --}
{% block '_bar_' %}
    bar

    {% block 'block-test1' %}
        test1
    {% end_block %}
    
    {% block '.block' %}
        .block
    {% end_block %}
    
    {% block '15block' %}
        15block
    {% end_block '15block' %}
{% end_block '_bar_' %}

{% show_block 'foo' %}
{% show_block 'block-test1' %}

{-- #3 : inline nested blocks  --}
text before {% block 'one' %} block one {% block 'two' %} block two  {% end_block %} {% end_block %} between blocks {% show_block 'one' %} between blocks {% block 'three' %} block three {% block 'four' %} block four  {% end_block %} {% end_block %} text after

{-- #4 : show blocks  --}
{%          show_block                      '_bar_'                       %}

{-- #5 : skip empty lines in block's body --}
show block foo : {% show_block 'foo' %}