<!-- begin _includes/seo.html -->
{%- if site.url -%}
  {%- assign seo_url = site.url | append: site.baseurl -%}
{%- endif -%}
{%- assign seo_url = seo_url | default: site.github.url -%}

{% assign title_separator = site.title_separator | default: '-' | replace: '|', '&#124;' %}

{%- assign author = page.author | default: page.authors[0] | default: site.author -%}
{%- assign author = site.data.authors[author] | default: author -%}

{%- if page.title -%}
  {%- assign seo_title = page.title | append: " " | ap