Extract content of a block from a twig template

Question

Is there any way to extract the source content of a twig template in an acceptable way? Of course I can use a regex pattern, but I think this is not the best solution.

If I have this:

{% block test %}
This is a test!
{% endblock %}

I want to extract this by using the name of the block:

This is a test!

Answer 1

Suppose file we have file: file.html.twig with

{% block test %}
This is a test!
{% endblock %}

to extract This is a test! execute a command:

sed '/{%/ d' file.html.twig