Middleman helpers not available inside Liquid templates

Hey guys,

I am trying to use Liquid as the templating language for a new Middleman site. Everything works fine except I cannot access regular Middleman helpers using the following syntax:

{{ current_page.data.title }}

This snippet returns an empty string. Calling it with {% and %} generates the following error:

Liquid::SyntaxError at /
Unknown tag 'current_page'

What is the proper way to access them? Do I need to define my own Liquid helpers?

You can find a sample repository here.

Thanks in advance!

As per Github issue 1202, I will need to write your own Liquid helpers.

Thanks!