Use link subtitle as meta description

diff --git a/docs/_includes/global/head.html b/docs/_includes/global/head.html
index 39fba8bc0be38e93a6ed9d92f12c6f5301116422..76bddc5fda10e4260d44e9678aec790266c7a150 100644 (file)
--- a/docs/_includes/global/head.html
+++ b/docs/_includes/global/head.html
@@ -52,6 +52,15 @@
   {% elsif page.layout == 'post' %}
     <meta property="og:description" content="{{ page.content | strip_html | truncate: 400, '…' }}">
     <meta name="twitter:description" content="{{ page.content | strip_html | truncate: 400, '…' }}">
+  {% elsif page.doc-tab %}
+    {% assign link = site.data.links.by_id[page.doc-tab] %}
+    {% if link.subtitle %}
+      <meta property="og:description" content="{{ link.subtitle | strip_html }}">
+      <meta name="twitter:description" content="{{ link.subtitle | strip_html }}">
+    {% else %}
+      <meta property="og:description" content="{{ site.data.meta.description }}">
+      <meta name="twitter:description" content="{{ site.data.meta.description }}">
+    {% endif %}
   {% else %}
     <meta property="og:description" content="{{ site.data.meta.description }}">
     <meta name="twitter:description" content="{{ site.data.meta.description }}">