fix(search): restore full-text search for posts with description (cotes2020#2557)

Author: cotes2020

_includes/post-description.html

@@ -0,0 +1,39 @@
+{%- comment -%}
+  Get the post's description or body content.
+
+  Arguments:
+    full_text: If true, return the full content. Default is false.
+    max_length: The maximum length of the returned content. Default is 200.
+{%- endcomment -%}
+
+{%- if post.description and include.full_text != true -%}
+  {{- post.description -}}
+{%- else -%}
+  {%- comment -%} Remove the line numbers from the code snippet. {%- endcomment -%}
+
+  {%- assign content = post.content -%}
+
+  {%- if content contains '<td class="rouge-gutter gl"><pre class="lineno">' -%}
+    {%- assign content = content
+      | replace: '<td class="rouge-gutter gl"><pre class="lineno">',
+        '<!-- <td class="rouge-gutter gl"><pre class="lineno">'
+    -%}
+    {%- assign content = content | replace: '</td><td class="rouge-code">', '</td> --><td class="rouge-code">' -%}
+  {%- endif -%}
+
+  {%- assign content = content
+    | markdownify
+    | strip_html
+    | newline_to_br
+    | replace: '<br />', ' '
+    | strip_newlines
+    | strip
+  -%}
+
+  {%- unless include.full_text -%}
+    {%- assign max_length = include.max_length | default: 200 -%}
+    {%- assign content = content | truncate: max_length -%}
+  {%- endunless -%}
+
+  {{- content -}}
+{%- endif -%}

_includes/post-summary.html

@@ -82,7 +82,7 @@ <h3 class="mb-4" id="related-label">
               {% include datetime.html date=post.date lang=include.lang %}
               <h4 class="pt-0 my-2">{{ post.title }}</h4>
               <div class="text-muted">
-                <p>{% include post-description.html %}</p>
+                <p>{% include post-summary.html %}</p>
               </div>
             </div>
           </a>

_includes/related-posts.html

@@ -78,7 +78,7 @@
             <h1 class="card-title my-2 mt-md-0">{{ post.title }}</h1>
 
             <div class="card-text content mt-0 mb-3">
-              <p>{% include post-description.html %}</p>
+              <p>{% include post-summary.html %}</p>
             </div>
 
             <div class="post-meta flex-grow-1 d-flex align-items-end">

_layouts/home.html

@@ -45,7 +45,7 @@ permalink: /feed.xml
     {% endfor %}
   {% endif %}
 
-  <summary>{% include post-description.html max_length=400 %}</summary>
+  <summary>{% include post-summary.html max_length=400 %}</summary>
 
   </entry>
 {% endfor %}

assets/feed.xml

@@ -11,7 +11,8 @@ swcache: true
     "categories": {{ post.categories | join: ', ' | jsonify }},
     "tags": {{ post.tags | join: ', ' | jsonify }},
     "date": {{ post.date | jsonify }},
-    "content": {% include post-description.html json=true %}
+    {% capture content -%}{% include post-summary.html full_text=true %}{%- endcapture -%}
+    "content": {{ content | jsonify }}
   }{% unless forloop.last %},{% endunless %}
   {% endfor %}
 ]