From a8f96c63aa7949b5410f1d77facb93169172cb12 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Wed, 15 Mar 2017 16:01:01 +0000
Subject: [PATCH] Comment

---
 synapse/api/filtering.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
index 6cadb5645..47f0cf0fa 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -265,7 +265,9 @@ class Filter(object):
         else:
             sender = event.get("sender", None)
             if not sender:
-                # Presence events have their 'sender' in content.user_id
+                # Presence events had their 'sender' in content.user_id, but are
+                # now handled above. We don't know if anything else uses this
+                # form. TODO: Check this and probably remove it.
                 content = event.get("content")
                 # account_data has been allowed to have non-dict content, so
                 # check type first