{% if site.google_analytics_tracking_id %}
  {% env prod %}
    <script id="google-analytics">
      (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
      (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
      })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
      ga('create', 'UA-40829935-1', 'philipwalton.github.io');
      ga('send', 'pageview');
    </script>
  {% endenv %}
{% endif %}
{% if site.google_analytics_tracking_id %}
  {% env prod %}
    <script id="google-analytics">
      (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
      (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
      })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
      ga('create', 'UA-40829935-1', 'auto');
      ga('send', 'pageview');
    </script>
  {% endenv %}
{% endif %}
Update the Google Analytics snippet to auto-detect the domain.
Update the Google Analytics snippet to auto-detect the domain.
