From 59b034737e575d3d1c7c1d65d2572a94cf0a8433 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Damir=20Jeli=C4=87?= <poljar@termina.org.uk>
Date: Sat, 21 Jul 2018 19:55:03 +0200
Subject: [PATCH] buffer: Handle an empty user part of an user id.

---
 matrix/buffer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/matrix/buffer.py b/matrix/buffer.py
index 4f90886..51b739a 100644
--- a/matrix/buffer.py
+++ b/matrix/buffer.py
@@ -708,7 +708,7 @@ class RoomBuffer(object):
             short_name = shorten_sender(user.user_id)
 
             # TODO make this configurable
-            if short_name in self.displayed_nicks.values():
+            if not short_name or short_name in self.displayed_nicks.values():
                 # Use the full user id, but don't include the @
                 nick = event.sender[1:]
             else: