Backport PR #13592: DOC: Make canonical URLs point to versioned path.

tacaswell · MeeseeksDev[bot] · commit 90c86ff57592 · 2019-03-05T16:06:04.000Z
diff --git a/doc/_templates/layout.html b/doc/_templates/layout.html
@@ -162,7 +162,11 @@ <h3>{{ _('Navigation') }}</h3>
     {%- endif %}
 {%- endblock %}
 {%- block extrahead %}
-  <link rel="canonical" href="https://matplotlib.org/{{pagename}}.html" />
+{%- if '+' in release %}
+    <link rel="canonical" href="https://matplotlib.org/devdocs/{{pagename}}.html" />
+{%- else %}
+    <link rel="canonical" href="https://matplotlib.org/{{version}}/{{pagename}}.html" />
+{%- endif %}
 {% endblock %}
 
 
