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_includes/analytics/matomo.html

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+<!-- Matomo -->
+<script>
+  document.addEventListener('DOMContentLoaded', () => {
+    var _paq = (window._paq = window._paq || []);
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    var u="//{{ site.analytics.matomo.domain }}/";
+    _paq.push(['setTrackerUrl', u+'matomo.php']);
+    _paq.push(['setSiteId', {{ site.analytics.matomo.id }}]);
+    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+    g.type='text/javascript'; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+  });
+</script>