apply

apply renders its content, then runs the result through one or more filters.

{% apply upper|trim %}
	Hello, {{ name }}
{% endapply %}

HELLO, ADA

The content was escaped as it rendered. The built-in text filters, such as upper and replace, keep it safe and change only its text, so it isn't escaped twice. Text they add, such as a replacement, is escaped. See Safe markup.

{% apply replace("NAME", name) %}
	<p>Hello, NAME</p>
{% endapply %}

<p>Hello, &lt;em&gt;Ada&lt;/em&gt;</p>

A filter that returns a plain string, such as one of your own, has its result escaped like any other output. Return safe markup from it to keep the HTML. apply doesn't create a scope.

This site uses apply with its own filters to highlight every code example.