<div data-smart-links="true">
<p><a href=".xls">A link containing href[.xls]</a></p>
</div>
{% extends "@link-page" %}
{% block main %}
<p><a href="{{ modifier }}">A link containing href[{{ modifier }}]</a></p>
{% endblock %}
{
"modifier": ".xls"
}
Add the data-attribute data-smart-links="true" on the parent (normally your <main> element or the content article.