Important: Fixed sitemap template.

404.html

@@ -4,16 +4,15 @@
 # MIT License
 layout: page
 title: "404: Page not found"
-
 permalink: /404.html
 
-redirect_from:  # Same as site.blocklist
-- /norobots/
-- /assets/
-- /tabs/
-- /categories/
-- /tags/
-- /posts/
+redirect_from:  # part of site.sitemap_exclude
+  - /norobots/
+  - /assets/
+  - /tabs/
+  - /categories/
+  - /tags/
+  - /posts/
 
 dynamic_title: true
 ---

_config.yml

@@ -160,12 +160,16 @@ exclude:
   - tools
 
 sitemap_exclude:  # Sitemap will exclude the following items.
-  - /norobots/
+  fuzzy:
     - /assets/
+  accurate:
+    - /norobots/
     - /tabs/
     - /categories/
     - /tags/
     - /posts/
-  - /404.html
-  - /redirects.json
-  - /search.json
+    - 404.html
+    - feed.xml
+    - sitemap.xml
+    - robots.txt
+    - redirects.json

sitemap.xml

@@ -1,5 +1,6 @@
 ---
 layout: compress
+#
 # The Sitemap template
 # © 2017-2019 Cotes Chung
 # MIT License
@@ -41,7 +42,30 @@ layout: compress
 
 {% for page in site.pages %}
 
-  {% if site.sitemap_exclude contains page.url %}
+  {% assign pass = false %}
+
+  {% for fuzzy in site.sitemap_exclude.fuzzy %}
+    {% if page.url contains fuzzy %}
+      {% assign pass = true %}
+      {% break %}
+    {% endif %}
+  {% endfor %}
+
+  {% unless pass %}
+    {% for accurate in site.sitemap_exclude.accurate %}
+      {% assign len = accurate | size %}
+      {% capture beg %}{{ 0 | minus: len }}{% endcapture %}
+      {% capture tail %}{{ page.url | slice: beg, len }}{% endcapture %}
+
+      {% if tail == accurate %}
+        {% assign pass = true %}
+        {% break %}
+      {% endif %}
+
+    {% endfor %}
+  {% endunless %}
+
+  {% if pass %}
     {% continue %}
   {% endif %}