{%- assign posts=site.posts | where:“lang-ref”, page.lang-ref | sort: 'lang' -%} {%- assign pages=site.pages | where:“lang-ref”, page.lang-ref | sort: 'lang' | concat: posts -%} <div id=“language-selector”>

<ul class="language">
        {%- for page in pages -%}
        {%- if page.lang != "x-default" -%}
        <li>
            <a href="{{ page.url | absolute_url }}" class="{{ page.lang }}">{{ page.lang }}</a>
        </li>
        {%- endif -%}
        {%- endfor -%}
</ul>

</div>