Cleanup auto generated excerpts

_layouts/archive.html

@@ -18,7 +18,7 @@ layout: default
         <h2 class="link-post" itemprop="headline"><a href="{{ absurl }}{{ post.url }}" title="{{ post.title }}">{{ post.title }}</a> <a href="{{ post.link }}" target="_blank" title="{{ post.title }}"><i class="fa fa-link"></i></a></h2>
       {% else %}
         <h2 itemprop="headline"><a href="{{ absurl }}{{ post.url }}" title="{{ post.title }}">{{ post.title }}</a></h2>
-        <p itemprop="description">{{ post.excerpt | remove: '\[ ... \]' | remove: '\( ... \)' | markdownify | strip_html | strip_newlines | escape_once }}</p>
+        <p itemprop="description">{{ post.excerpt | markdownify | strip_html | strip_newlines | escape_once }}</p>
       {% endif %}
     </article>
   {% endfor %}

_layouts/post.html

@@ -5,7 +5,7 @@ layout: default
 {% include absolute-url.liquid %}
 
 <article class="post" itemscope itemtype="http://schema.org/CreativeWork">
-  <meta itemprop="description" content="{{ page.excerpt | strip_html }}">
+  {% if page.excerpt %}<meta itemprop="description" content="{{ page.excerpt | markdownify | strip_html | strip_newlines | escape_once }}">{% endif %}
   {% if page.date %}<meta itemprop="datePublished" content="{{ page.date | date: "%B %d, %Y" }}">{% endif %}
   {% if page.modified %}<meta itemprop="dateModified" content="{{ page.modified | date: "%B %d, %Y" }}">{% endif %}