From f0f09629a924435c223f405bea084401ecb7faa2 Mon Sep 17 00:00:00 2001
From: Daniel Watkins <daniel.watkins@canonical.com>
Date: Tue, 26 Feb 2019 15:13:38 +0000
Subject: cc_rsyslog: Escape possible nested set

Under Python 3.7, we are seeing `FutureWarning: Possible nested set at
position 23`; escaping this bracket causes that warning to disappear.

LP: #1816967
---
 cloudinit/config/cc_rsyslog.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cloudinit/config/cc_rsyslog.py b/cloudinit/config/cc_rsyslog.py
index 27d2366c..22b17532 100644
--- a/cloudinit/config/cc_rsyslog.py
+++ b/cloudinit/config/cc_rsyslog.py
@@ -203,7 +203,7 @@ LOG = logging.getLogger(__name__)
 COMMENT_RE = re.compile(r'[ ]*[#]+[ ]*')
 HOST_PORT_RE = re.compile(
     r'^(?P<proto>[@]{0,2})'
-    r'(([[](?P<bracket_addr>[^\]]*)[\]])|(?P<addr>[^:]*))'
+    r'(([\[](?P<bracket_addr>[^\]]*)[\]])|(?P<addr>[^:]*))'
     r'([:](?P<port>[0-9]+))?$')
 
 
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