if theme.disqus.enable
  #disqus_thread
  script.
    var unused = null;
    var disqus_config = function () {
      this.page.url = '!{ page.permalink }';
      this.page.identifier = '!{ page.path }';
      this.page.title = '!{ page.title }';
    }
    var d = document, s = d.createElement('script');
    s.src = "https://" + '!{theme.disqus.shortname}' +".disqus.com/embed.js";
    s.setAttribute('data-timestamp', '' + +new Date());
    (d.head || d.body).appendChild(s);