From 1163fb9be08c6072455b59d6f954e60662d18e75 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 30 Sep 2017 22:52:25 +0300
Subject: [2.7] bpo-31627: Make test_mailbox be lenient to empty hostname.
 (GH-3821) (#3838)

(cherry picked from commit f4ea642cb60556231e714089a79d3c59c202661e)
---
 Lib/test/test_mailbox.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index 2261bb8..f8db5d5 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -654,7 +654,7 @@ class TestMaildir(TestMailbox, unittest.TestCase):
             hostname = hostname.replace(':', r'\072')
         pid = os.getpid()
         pattern = re.compile(r"(?P<time>\d+)\.M(?P<M>\d{1,6})P(?P<P>\d+)"
-                             r"Q(?P<Q>\d+)\.(?P<host>[^:/]+)")
+                             r"Q(?P<Q>\d+)\.(?P<host>[^:/]*)")
         previous_groups = None
         for x in xrange(repetitions):
             tmp_file = self._box._create_tmp()
-- 
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