Hopefully fix problems with use of HTTP not HTTPS in URLs

Change site.github.url to either site.url or use relative_url filter

Gemfile

@@ -1,5 +1,4 @@
 # frozen_string_literal: true
 
 source "https://rubygems.org"
-gemspec
 gem 'github-pages'

_config.yml

@@ -41,4 +41,8 @@ defaults:
       path: ""
     values:
       image: /assets/images/at-chevron_4096x4096.png
+  - scope:
+      path: ""
+    values:
+      comments: true
 # end jekyll-seo-tag configuration

_includes/back_to_home.html

@@ -1 +1 @@
-<div style="float:right;"><a href="{{ site.github.url }}/">< Back to home</a></div>
+<div style="float:right;"><a href="{{ site.url }}/">< Back to home</a></div>

_includes/footer.html

@@ -54,7 +54,7 @@
       </a>
     </li>
   </ul>
-  <p class="text">{{ site.description }} Subscribe <a href="{{ site.github.url }}/feed.xml">via RSS</a></p>
+  <p class="text">{{ site.description }} Subscribe <a href="{{ "feed.xml" | relative_url }}">via RSS</a></p>
 </footer>
 
 <div class="copyright-base">

_includes/head.html

@@ -2,31 +2,31 @@
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width initial-scale=1" />
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
-    <link rel="shortcut icon" href="{{ site.github.url }}/assets/images/favicons/favicon.png"/>
-    <link rel="icon" href="{{ site.github.url }}/assets/images/favicons/favicon.png">
+    <link rel="shortcut icon" href="{{ "/assets/images/favicons/favicon.png" | relative_url }}"/>
+    <link rel="icon" href="{{ "/assets/images/favicons/favicon.png" | relative_url }}">
 
-    <link rel="apple-touch-icon" href="{{ site.github.url }}/assets/images/favicons/touch-icon-iphone.png">
-    <link rel="apple-touch-icon" sizes="57x57" href="{{ site.github.url }}/assets/images/favicons/favicon57.png">
-    <link rel="apple-touch-icon" sizes="72x72" href="{{ site.github.url }}/assets/images/favicons/favicon72.png">
-    <link rel="apple-touch-icon" sizes="76x76" href="{{ site.github.url }}/assets/images/favicons/touch-icon-ipad.png">
-    <link rel="apple-touch-icon" sizes="114x114" href="{{ site.github.url }}/assets/images/favicons/favicon114.png">
-    <link rel="apple-touch-icon" sizes="120x120" href="{{ site.github.url }}/assets/images/favicons/touch-icon-iphone-retina.png">
-    <link rel="apple-touch-icon" sizes="152x152" href="{{ site.github.url }}/assets/images/favicons/touch-icon-ipad-retina.png">
+    <link rel="apple-touch-icon" href="{{ "/assets/images/favicons/touch-icon-iphone.png" | relative_url }}">
+    <link rel="apple-touch-icon" sizes="57x57" href="{{ "/assets/images/favicons/favicon57.png" | relative_url }}">
+    <link rel="apple-touch-icon" sizes="72x72" href="{{ "/assets/images/favicons/favicon72.png" | relative_url }}">
+    <link rel="apple-touch-icon" sizes="76x76" href="{{ "/assets/images/favicons/touch-icon-ipad.png" | relative_url }}">
+    <link rel="apple-touch-icon" sizes="114x114" href="{{ "/assets/images/favicons/favicon114.png" | relative_url }}">
+    <link rel="apple-touch-icon" sizes="120x120" href="{{ "/assets/images/favicons/touch-icon-iphone-retina.png" | relative_url }}">
+    <link rel="apple-touch-icon" sizes="152x152" href="{{ "/assets/images/favicons/touch-icon-ipad-retina.png" | relative_url }}">
 
     <meta name="application-name" content="AutoTrader">
     <meta name="msapplication-TileColor" content="#ffffff">
-    <meta name="msapplication-square70x70logo" content="{{ site.github.url }}/assets/images/favicons/msapplication-tiny.png">
-    <meta name="msapplication-square150x150logo" content="{{ site.github.url }}/assets/images/favicons/msapplication-square.png">
-    <meta name="msapplication-wide310x150logo" content="{{ site.github.url }}/assets/images/favicons/msapplication-wide.png">
-    <meta name="msapplication-square310x310logo" content="{{ site.github.url }}/assets/images/favicons/msapplication-large.png">
+    <meta name="msapplication-square70x70logo" content="{{ "/assets/images/favicons/msapplication-tiny.png" | relative_url }}">
+    <meta name="msapplication-square150x150logo" content="{{ "/assets/images/favicons/msapplication-square.png" | relative_url }}">
+    <meta name="msapplication-wide310x150logo" content="{{ "/assets/images/favicons/msapplication-wide.png" | relative_url }}">
+    <meta name="msapplication-square310x310logo" content="{{ "/assets/images/favicons/msapplication-large.png" | relative_url }}">
 
     <title>{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}</title>
 
-    <link rel="stylesheet" href="{{ site.github.url }}/assets/css/main.css">
+    <link rel="stylesheet" href="{{ "assets/css/main.css" | relative_url }}">
 
     {% seo %}
 
     {% if page.typescript-syntax %}
-        <link rel="stylesheet" href="{{ site.github.url }}/assets/css/typescript-syntax-highlighting.css">
+        <link rel="stylesheet" href="{{ "/assets/css/typescript-syntax-highlighting.css" | relative_url }}">
     {% endif %}
 </head>

_includes/header.html

@@ -6,7 +6,7 @@
 
     <div class="top-header" >
         <div class="wrapper">
-           <a class="site-title at-logo" href="{{ site.github.url }}/" >
+           <a class="site-title at-logo" href="{{ site.url }}/" >
                 Auto Trader
            </a>
             <span>{{ site.title }}</span>
@@ -30,7 +30,7 @@
 
 
 
-            <a class="site-title at-logo" href="{{ site.github.url }}/" >
+            <a class="site-title at-logo" href="{{ site.url }}/" >
                 Auto Trader
             </a>
 
@@ -39,7 +39,7 @@
 
                 {% for page in site.pages %}
                   {% if page.title %}
-                  <a class="page-link" href="{{ page.url | prepend: site.github.url }}">{{ page.title }}</a>
+                  <a class="page-link" href="{{ page.url | relative_url }}">{{ page.title }}</a>
                   {% endif %}
                 {% endfor %}
 

_includes/social_share.html

@@ -1,9 +1,9 @@
 <div class="social-share">
   Share:
-  <a href="https://twitter.com/intent/tweet?text={{ page.title }}&url={{ site.github.url }}{{ page.url }}&via={{ site.twitter.username }}&related={{ site.twitter.username }}" rel="nofollow" target="_blank" title="Share on Twitter">
+  <a href="https://twitter.com/intent/tweet?text={{ page.title }}&url={{ page.url | relative_url }}&via={{ site.twitter.username }}&related={{ site.twitter.username }}" rel="nofollow" target="_blank" title="Share on Twitter">
     {% include icons/twitter.html %}
   </a>
-  <a href="https://facebook.com/sharer.php?u={{ site.github.url }}{{ page.url }}" rel="nofollow" target="_blank" title="Share on Facebook">
+  <a href="https://facebook.com/sharer.php?u={{ page.url | relative_url }}" rel="nofollow" target="_blank" title="Share on Facebook">
     {% include icons/facebook.html %}
   </a>
 </div>

_layouts/default.html

@@ -1,6 +1,6 @@
 <!DOCTYPE html>
 <html>
-<!-- "{{ site.github.url }}" -->
+<!-- "{{ site.url }}" -->
   {% include head.html %}
 
   <body>

_layouts/feed.xml

@@ -3,8 +3,8 @@
     <channel>
         <title>{{ site.title | xml_escape }}</title>
         <description>{{ site.description | xml_escape }}</description>
-        <link>{{ site.github.url }}/</link>
-        <atom:link href="{{ "/feed.xml" | prepend: site.github.url }}" rel="self" type="application/rss+xml" />
+        <link>{{ site.url }}/</link>
+        <atom:link href="{{ "/feed.xml" | relative_url }}" rel="self" type="application/rss+xml" />
         <pubDate>{{ site.time | date_to_rfc822 }}</pubDate>
         <lastBuildDate>{{ site.time | date_to_rfc822 }}</lastBuildDate>
         <generator>Jekyll v{{ jekyll.version }}</generator>
@@ -13,8 +13,8 @@
             <title>{{ post.title | xml_escape }}</title>
             <description>{{ post.content | xml_escape }}</description>
             <pubDate>{{ post.date | date_to_rfc822 }}</pubDate>
-            <link>{{ post.url | prepend: site.github.url }}</link>
-            <guid isPermaLink="true">{{ post.url | prepend: site.github.url }}</guid>
+            <link>{{ post.url | relative_url }}</link>
+            <guid isPermaLink="true">{{ post.url | relative_url }}</guid>
             {% for tag in post.tags %}
             <category>{{ tag | xml_escape }}</category>
             {% endfor %}

_layouts/index.html

@@ -10,7 +10,7 @@ <h1 class="page-heading">{{site.title}}</h1>
         {% for post in paginator.posts %}
         <li>
             <h2>
-                <a class="post-link" href="{{ site.github.url }}{{ post.url }}">{{ post.title }}</a>
+                <a class="post-link" href="{{ post.url | relative_url }}">{{ post.title }}</a>
             </h2>
             <p>
                 <span class="post-meta">{{ post.date | date: "%b %-d, %Y" }}{% if post.author %} • {{ post.author }}{% endif %}</span>
@@ -24,7 +24,7 @@ <h2>
             {{ post.excerpt | number_of_words }}
             {% endcapture %}
             {% if excerpt_words != content_words %}
-            <p><a class="btn btn-sm btn-primary" href="{{ site.github.url }}{{ post.url }}" role="button">Read more… <i class="fa fa-arrow-circle-right"></i></a>
+            <p><a class="btn btn-sm btn-primary" href="{{ post.url | relative_url }}" role="button">Read more… <i class="fa fa-arrow-circle-right"></i></a>
             </p>
             {% endif %}
         </li>
@@ -34,13 +34,13 @@ <h2>
     {% if paginator.total_pages != 1 %}
     <div class="pagination">
         {% if paginator.previous_page %}
-        <a href="{{ site.github.url }}{{ paginator.previous_page_path }}" class="previous">Previous</a>
+        <a href="{{ paginator.previous_page_path | relative_url }}" class="previous">Previous</a>
         {% else %}
         <span class="previous inactive">Previous</span>
         {% endif %}
         <span class="page_number ">Page {{ paginator.page }} of {{ paginator.total_pages }}</span>
         {% if paginator.next_page %}
-        <a href="{{ site.github.url }}{{ paginator.next_page_path }}" class="next">Next</a>
+        <a href="{{ paginator.next_page_path | relative_url }}" class="next">Next</a>
         {% else %}
         <span class="next inactive">Next</span>
         {% endif %}

_layouts/tags.html

@@ -17,7 +17,7 @@ <h2 id="{{ tag | slugify }}">{{ tag }}</h2>
                 {% if post.tags contains tag %}
             <li>
                 <h3>
-                    <a href="{{ site.github.url }}{{ post.url }}">
+                    <a href="{{ post.url | relative_url }}">
                         {{ post.title }}
                         <br><small>{{ post.date | date_to_string }}—{{ post.author }}</small>
                     </a>