md to add comment system integration #}
{% if comments is defined %}
<section class="content-comments">
    {{ comments }}
</section>
{% elif site.extra.comments.source is defined and content.date %}
    {%include "comments.html" ignore missing %}
{% endif %}

{% if content.source_path is string and (site.publish_md or site.source_repository) %}
<article>
<div class="content-source">
  {% set source_url = source_link(content=content) %}
  {% if source_url %}
    <a href="{{url_for(path=source_url)}}" rel="n