# HG changeset patch
# User Kai T. Ohlhus <k.ohlhus@gmail.com>
# Date 1536257757 -7200
# Node ID d8eb48d642d1251855d5129e2ff622b51fcdcfe9
# Parent  f5d07829a487c16abed87c342d3ab2a6565a9992
Add Open Graph protocol meta data for social media sharing.

diff -r f5d07829a487 -r d8eb48d642d1 _includes/head.html
--- a/_includes/head.html	Wed Aug 15 08:41:19 2018 +0200
+++ b/_includes/head.html	Thu Sep 06 20:15:57 2018 +0200
@@ -4,7 +4,13 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
 
   <title>{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}</title>
-  <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}">
+  <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | lstrip | rstrip | truncate: 140 }}{% else %}{{ site.description | strip_html | lstrip | rstrip | truncate: 140 }}{% endif %}">
+  <meta property="og:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}">
+  <meta property="og:description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | lstrip | rstrip | truncate: 140 }}{% else %}{{ site.description | strip_html | lstrip | rstrip | truncate: 140 }}{% endif %}">
+  <meta property="og:image" content="https://www.gnu.org/software/octave/img/octave-logo.svg">
+  <meta property="og:image:alt" content="GNU Octave">
+  <meta property="og:type" content="website">
+  <meta property="og:url" content="{{ page.url | absolute_url }}">
 
   <link rel="stylesheet" href="{{ "/css/foundation.min.css" | relative_url }}">
   <link rel="stylesheet" href="{{ "/css/normalize.css" | relative_url }}">