{% if post.author %}
{% assign author = post.author %}
{% elsif page.author %}
{% assign author = page.author %}
{% else %}
{% assign author = site.author %}
{% endif %} {% if author %}
{% if site.googleplus_user %} <span class="byline author vcard">by <a href="https://plus.google.com/{{ site.googleplus_user }}?rel=author"><span class="fn">{{ author }}</span></a></span> {% else %} <span class="byline author vcard">by <span class="fn">{{ author }}</span></span> {% endif %}
{% endif %}