{# ANALYTICS is Pelican's own setting, holding whatever markup the provider hands you.
GOOGLE_ANALYTICS predates it here and only ever spoke gtag, so it stays for the sites
already on it. Both render when both are set. #}
{% if ANALYTICS %}
    {{ ANALYTICS }}
{% endif %}
{% if GOOGLE_ANALYTICS %}
    <script async
            src="https://www.googletagmanager.com/gtag/js?id={{ GOOGLE_ANALYTICS }}"></script>
    <script>
        window.dataLayer = window.dataLayer || [];

        function gtag() {
            dataLayer.push(arguments);
        }
        gtag('js', new Date());
        gtag('config', '{{ GOOGLE_ANALYTICS }}');
    </script>
{% endif %}