From 099c4a2e8bb1e6e2c42056c6aef004024fbd8c7c Mon Sep 17 00:00:00 2001
From: Andrew Hendley <andrew.hendley@jbwere.com>
Date: Tue, 12 Nov 2019 15:25:18 +1100
Subject: [PATCH] #1177 Bug fix of missing regex escaped back slashes

---
 bottle.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/bottle.py b/bottle.py
index 910b747c3..9850abb25 100644
--- a/bottle.py
+++ b/bottle.py
@@ -3430,8 +3430,8 @@ class StplParser(object):
     # 2: Comments (until end of line, but not the newline itself)
     _re_tok += '|(#.*)'
     # 3,4: Open and close grouping tokens
-    _re_tok += '|([\[\{\(])'
-    _re_tok += '|([\]\}\)])'
+    _re_tok += '|([\\[\\{\\(])'
+    _re_tok += '|([\\]\\}\\)])'
     # 5,6: Keywords that start or continue a python block (only start of line)
     _re_tok += '|^([ \\t]*(?:if|for|while|with|try|def|class)\\b)' \
                '|^([ \\t]*(?:elif|else|except|finally)\\b)'