Remove line number from post snippet (#51).

Involves:
- Home page
- relate posts
- search results
- feed

_includes/no-linenos.html

@@ -0,0 +1,12 @@
+{% comment %}
+  Remove line numbers from code snippets.
+  v2.2
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  Published under the MIT License
+{% endcomment %}
+
+{% 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 %}

_includes/related-posts.html

@@ -58,7 +58,9 @@
             </span>
             <h3 class="pt-0 mt-1 mb-3" data-toc-skip>{{ post.title }}</h3>
             <div class="text-muted small">
-              <p>{{ post.content | markdownify | strip_html | truncate: 200 | replace: '&', '&amp;' }}</p>
+              {% assign content = post.content %}
+              {% include no-linenos.html %}
+              <p>{{ content | markdownify | strip_html | truncate: 200 | replace: '&', '&amp;' }}</p>
             </div>
           </div>
         </a>

_layouts/home.html

@@ -15,7 +15,9 @@ layout: page
     </h1>
     <div class="post-content">
       <p>
-      {{ post.content | strip_html | truncate: 200 | replace: '&', '&amp;' }}
+      {% assign _content = post.content %}
+      {% include no-linenos.html %}
+      {{ _content | markdownify | strip_html | truncate: 200 }}
       </p>
     </div>
 

assets/data/search.json

@@ -10,7 +10,9 @@ layout: compress
     "categories": "{{ post.categories | join: ', '}}",
     "tags": "{{ post.tags | join: ', ' }}",
     "date": "{{ post.date }}",
-    "snippet": "{{ post.content | strip_html | strip_newlines | remove_chars | escape | truncate: 300 | replace: '\', '\\\\' }}"
+    {% assign content = post.content %}
+    {% include no-linenos.html %}
+    "snippet": "{{ content | strip_html | strip_newlines | remove_chars | escape | truncate: 300 | replace: '\', '\\\\' }}"
   }{% unless forloop.last %},{% endunless %}
   {% endfor %}
 ]

feed.xml

@@ -50,7 +50,10 @@ layout: compress
   {% if post.summary %}
     <summary>{{ post.summary | strip }}</summary>
   {% else %}
-    <summary>{{ post.content | strip_html | truncate: 200 }}</summary>
+    <summary>
+      {% assign content = post.content %}
+      {% include no-linenos.html %}
+      {{ content | strip_html | truncate: 200 }}</summary>
   {% endif %}
 
   </entry>