added new comment system

overrides/partials/comments.html

@@ -1,54 +1,19 @@
-{% if page.meta.comments %}
-  <h2 id="__comments">{{ lang.t("meta.comments") }}</h2>
-  <!-- Insert generated snippet here -->
-  <script src="https://giscus.app/client.js"
-    data-repo="stiebke/stiebke.github.io"
-    data-repo-id="R_kgDONXxN1Q"
-    data-category="Show and tell"
-    data-category-id="DIC_kwDONXxN1c4Ck44X"
-    data-mapping="pathname"
-    data-strict="0"
-    data-reactions-enabled="1"
-    data-emit-metadata="0"
-    data-input-position="bottom"
-    data-theme="light"
-    data-lang="de"
-    crossorigin="anonymous"
-    async>
-  </script>  
-  <!-- Synchronize Giscus theme with palette -->
-  <script>
-    var giscus = document.querySelector("script[src*=giscus]")
-
-    // Set palette on initial load
-    var palette = __md_get("__palette")
-    if (palette && typeof palette.color === "object") {
-      var theme = palette.color.scheme === "slate"
-        ? "transparent_dark"
-        : "light"
-
-      // Instruct Giscus to set theme
-      giscus.setAttribute("data-theme", theme) 
-    }
-
-    // Register event handlers after documented loaded
-    document.addEventListener("DOMContentLoaded", function() {
-      var ref = document.querySelector("[data-md-component=palette]")
-      ref.addEventListener("change", function() {
-        var palette = __md_get("__palette")
-        if (palette && typeof palette.color === "object") {
-          var theme = palette.color.scheme === "slate"
-            ? "transparent_dark"
-            : "light"
-
-          // Instruct Giscus to change theme
-          var frame = document.querySelector(".giscus-frame")
-          frame.contentWindow.postMessage(
-            { giscus: { setConfig: { theme } } },
-            "https://giscus.app"
-          )
-        }
-      })
-    })
+{% set isso = config.extra.isso %}
+{% if page and page.meta and page.meta.isso is string %}
+{% set isso = page.meta.isso %}
+{% endif %}
+{% if not page.is_homepage %}
+{# Comment system (Isso) #}
+<div id="__comments">
+  <script
+    data-isso="{{ config.extra.isso.custom_url }}/"
+    data-isso-require-author="true"
+    data-isso-require-email="true"
+    data-isso-reply-to-self="false"
+    data-isso-vote="true"
+    src="{{ config.extra.isso.custom_url }}/js/embed.min.js">
   </script>
-{% endif %}
+  <hr><section id="isso-thread"><h2>Comments</h2></section>
+  <noscript>Please enable JavaScript to view the comments.</noscript>
+</div>
+{% endif %}