Alternative links for multilanguage documents.

_layouts/default.html

@@ -10,6 +10,13 @@
     <link rel="stylesheet" type="text/css" href="{{ site.url }}/css/print.css" media="print" />
     <link rel="stylesheet" type="text/css" href="{{ site.url }}/css/custom.css" media="all" />
 
+    {% if page.alternatives %}
+        <link rel="alternate" hreflang="{{ page.language }}" href="{{ page.url }}" />
+        {% for altpost in page.alternatives %}
+            <link rel="alternate" hreflang="{{ altpost.language }}" href="{{ site.url }}{{ altpost.url }}" />
+        {% endfor %}
+    {% endif %}
+
     <title>{{ page.title }} :: {{ site.name }}</title>
 
     <script src="{{ site.url }}/bower_components/jquery/dist/jquery.min.js" type="text/javascript"></script>

know-how/hacking/_posts/2009-10-30-bios-passwords-de.md

@@ -1,6 +1,9 @@
 ---
 title: BIOS Passwörter
 language: de
+alternatives:
+  - language: en
+    url: /know-how/hacking/bios-passwords.html
 layout: default
 created: 2008-07-18 01:36:55 +0200
 updated: 2009-10-30 22:53:14 +0100

know-how/hacking/_posts/2009-10-30-bios-passwords.md

@@ -1,6 +1,9 @@
 ---
 title: BIOS Passwords
 language: en
+alternatives:
+  - language: de
+    url: /know-how/hacking/bios-passwords-de.html
 layout: default
 created: 2008-07-16 00:44:43 +0200
 updated: 2009-10-30 22:53:46 +0100