{% if plugins contains 'jekyll-feed' %}{% include head/feed-tag.html %}{% endif %}
{% if site.google_fonts %}
{%- capture google_fonts_url %}{{ site.google_fonts_url | default:'https://fonts.googleapis.com' }}{%- endcapture -%}
{%- if google_fonts_url == 'https://fonts.googleapis.com' -%}
{%- endif -%}
{% endif %}
{% if site.google_analytics %}
{% endif %}
{% if site.kramdown.math_engine == 'katex' %}
{% capture katex_url %}{{ 'assets/bower_components/katex/dist/katex.min.css' | relative_url }}{% endcapture %}
{% endif %}
{% assign disqus = site.disqus | default:site.disqus_shortname %}
{% if disqus %}
{% endif %}