wwwtext: link to RFC4685 (Atom Threading)

This should give this feature some more visibility.

diff --git a/lib/PublicInbox/WwwText.pm b/lib/PublicInbox/WwwText.pm
index 2e58eeb4175265dc98f2e8d478a706072f9cac31..449cb499a09f7836d5468c0720379fe9c3263845 100644 (file)
--- a/lib/PublicInbox/WwwText.pm
+++ b/lib/PublicInbox/WwwText.pm
@@ -181,6 +181,10 @@ message threading
        $WIKI_URL/Atom_(standard)
        https://tools.ietf.org/html/rfc4287
 
+      Atom Threading Extensions (RFC4685) is supported:
+
+       https://tools.ietf.org/html/rfc4685
+
     Finally, the gzipped mbox for a thread is available for
     downloading and importing into your favorite mail client: