Duplicate-headers-bloglisting

<!-- `is_listing_view` is a HubL variable in the developer info pane that checks if the page is a listing view such as blog listing page -->

{% if is_listing_view %}
  {% if request.path|split("/", 5)|last == "1" %}
    <script>
	    //Append page num to title so you don't have duplicate title tags
	    document.title += " | Page {{current_page_num}}";
	    // Replace Current Meta Description with new one that appends page num before it.
	    document.querySelector('meta[name="description"]').setAttribute("content","Page {{current_page_num}} - {{content.meta_description|escapejs}}");
    
  </script>

{% elif current_page_num > 1 %}
   <link rel="canonical" href="{{ content.absolute_url }}/page/{{ current_page_num }}">
  {% else %}
      {% if request.path is string_containing '/all' %}
           <link rel="canonical" href="{{ content.absolute_url }}/all">
          {% else %}
                 <link rel="canonical" href="{{ content.absolute_url }}">
          {% endif %}
  {% endif %}

  {% if blog_author %}
    {% if current_page_num > 1 %}
      <script>
        document.title += " | Page {{ current_page_num }}";
        document.querySelector('meta[name="description"]').setAttribute("content","Page {{current_page_num}} - {{blog_author.display_name}} - {{content.meta_description|escapejs}}");
      </script>
    {% endif %}


  {% elif topic %}
    {% if current_page_num > 1 %}
    <script>
     document.title += " | Page {{ current_page_num }} ";
     document.querySelector('meta[name="description"]').setAttribute("content", "Page {{current_page_num}} - {{ topic }} - {{content.meta_description|escapejs}}");
     </script>
    {% endif %}

  {% elif tag %}
     {% if current_page_num > 1 %}
    <script>
     document.title += " | Page {{ current_page_num }} ";
     document.querySelector('meta[name="description"]').setAttribute("content", "Page {{current_page_num}} - {{ tag }} - {{content.meta_description|escapejs}}");
     </script>
    {% endif %}

{% else current_page_num > 1 %}
		<script>
	    //Append page num to title so you don't have duplicate title tags
	    document.title += " | Page {{current_page_num}}";
	    // Replace Current Meta Description with new one that appends page num before it.
	    document.querySelector('meta[name="description"]').setAttribute("content","Page {{current_page_num}} - {{content.meta_description|escapejs}}");
    
  		</script>

	{% endif %}

  
{% endif %}
<!-- /End listing view IF -->