Description: Disambiguate possible nested set in regex
 eliminate Python 3.7's FutureWarning for possible nested sets
Author: Chenfeng Bao <cfbao@users.noreply.github.com>
Origin: upstream, https://github.com/thp/urlwatch/pull/299
Bug: https://github.com/thp/urlwatch/pull/299 
Applied-Upstream: https://github.com/thp/urlwatch/commit/b7fae1cfc6cdb4202492fb0a8ae281dc69ce18d8
Reviewed-by: Thomas Perl <m@thp.io>
Last-Update: 2018-12-01
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/lib/urlwatch/reporters.py
+++ b/lib/urlwatch/reporters.py
@@ -61,7 +61,7 @@
 
 # Regular expressions that match the added/removed markers of GNU wdiff output
 WDIFF_ADDED_RE = r'[{][+].*?[+][}]'
-WDIFF_REMOVED_RE = r'[[][-].*?[-][]]'
+WDIFF_REMOVED_RE = r'[\[][-].*?[-][]]'
 
 
 class ReporterBase(object, metaclass=TrackSubClasses):
