From 9690356080e995d7f9d3b3370c0030f87f9e8650 Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@gnu.kitenet.net>
Date: Tue, 3 Feb 2009 10:43:27 -0500
Subject: [PATCH] note

---
 doc/todo/pingback_support.mdwn | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/doc/todo/pingback_support.mdwn b/doc/todo/pingback_support.mdwn
index 3a7b5a931..b10366bda 100644
--- a/doc/todo/pingback_support.mdwn
+++ b/doc/todo/pingback_support.mdwn
@@ -28,6 +28,9 @@ case I will consider this done with an entry in [[tips]]; otherwise a
 > would be subject to the usual comment filtering (ie, blogspam) and
 > moderation and would then show up amoung the other, regular comments on
 > the page.
+>
+> (One wrinkle: would need to guard against duplicate pings. Maybe by
+> checking existing comments for any that have the same url?)
 > 
 > As for sending trackbacks and pingbacks, this could fairly easily be
 > implemented using a `editcontent` hook. Since this hook is called
-- 
2.39.5