Tell search engines not to index outbound links from unsupported docs

Our old versions of the docs often link to sites that are dead or in
some cases even hijacked. Let's stop feeding them to search engines.

diff --git a/templates/docs/docspage.html b/templates/docs/docspage.html
index f5f3e3b109ff623b610dfaaceb89a7b525e1aca0..b23fafbb2d577e5abead9f297bb54c41703b3e55 100644 (file)
--- a/templates/docs/docspage.html
+++ b/templates/docs/docspage.html
@@ -14,6 +14,7 @@
   <meta property="og:title" content="{{og.title}}" />
 {%if og.description%}  <meta property="og:description" content="{{og.description|truncatewords:"20"}}" />{%endif%}
   <meta property="og:site_name" content="{{og.sitename|default:"PostgreSQL"}}" />{%endif%}
+{%if not page.version.supported%}  <meta name="robots" content="nofollow" />{%endif%}
   <link href="/media/css/fontawesome.css?{{gitrev}}" rel="stylesheet">
   <link rel="stylesheet" href="/media/css/bootstrap-4.4.1.min.css">
   <link rel="shortcut icon" href="/favicon.ico" />