re #51 introduces description_short for index pages

_includes/index.html

@@ -1,17 +1,9 @@
 {% for link in include.links %}
-  {% if link.is_folder %}
-    {% assign title = link.title %}
-    {% assign description = link.description %}
-    {% capture url %}{{page.url}}{{link.url}}/{{link.pages[0].url}}/{% endcapture %}
-  {% else %}
-    {% capture url %}{{page.url}}{{link.url}}/{% endcapture %}
-    {% capture path %}{{url}}index.html{% endcapture %}
-    {% assign_page link_data = path %}
-    {% assign title = link_data.title %}
-    {% assign description = link_data.description %}
-  {% endif %}
+  {% capture url %}{{page.url}}{{link.url}}/{% endcapture %}
+  {% capture path %}{{url}}index.html{% endcapture %}
+  {% assign_page link_data = path %}
 <div>
-  <h2><a href="{{ site.baseurl }}{{ url }}">{{ title }}</a></h2>
-  <p>{{ description }}</p>
+  <h2><a href="{{ site.baseurl }}{{ url }}">{{ link_data.title }}</a></h2>
+  <p>{{ link_data.description_short | or:link_data.description }}</p>
 </div>
 {% endfor %}

_plugins/or.rb

@@ -0,0 +1,9 @@
+module Jekyll
+  module ORFilter
+    def or(a, b)
+      a = a || b
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::ORFilter)

getting-started/basic-configuration.md

@@ -2,6 +2,7 @@
 layout: default
 title: Basic Configuration
 description: TinyMCE provides a wide range of configuration options that enable you to integrate it tightly with your application.
+description_short: Test short desc.
 ---
 
 In this introduction to TinyMCE configuration we will discuss the most important options typically used in traditional form-based layouts, along with examples of how to use TinyMCE as an inline editor (which is very useful when creating user experiences where the editing view of the page is merged with the reading view of the page.)