From fa13c68ebcec6e3dd6a3955f292224befffeb037 Mon Sep 17 00:00:00 2001
From: James Lu <james@overdrivenetworks.com>
Date: Fri, 15 Jul 2016 23:44:25 -0700
Subject: [PATCH] SedRegex: work around "nothing to repeat" errors on Python <
 2.7.6

Source: https://stackoverflow.com/questions/3675144/regex-error-nothing-to-repeat and https://bugs.python.org/issue18647

From: https://github.com/jlu5/SupyPlugins/commit/335fc6e3da685e1c899ca41f370383603924ce8f
---
 plugins/SedRegex/plugin.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/plugins/SedRegex/plugin.py b/plugins/SedRegex/plugin.py
index acd7bb67c..153c431c6 100644
--- a/plugins/SedRegex/plugin.py
+++ b/plugins/SedRegex/plugin.py
@@ -44,9 +44,11 @@ try:
 except ImportError:
     _ = lambda x: x
 
-
+# Note: {0,2} is used for matching the flags instead of "*" to work around a Python bug in versions
+# lower than 2.7.6: see https://stackoverflow.com/questions/3675144/regex-error-nothing-to-repeat
+# and https://bugs.python.org/issue18647
 SED_REGEX = re.compile(r"^(?:(?P<nick>.+?)[:,] )?s(?P<delim>[^\w\s])(?P<pattern>.*?)(?P=delim)"
-                       r"(?P<replacement>.*?)(?:(?P=delim)(?P<flags>[gi]*))?$")
+                       r"(?P<replacement>.*?)(?:(?P=delim)(?P<flags>[gi]{0,2}))?$")
 
 class SedRegex(callbacks.PluginRegexp):
     """History replacer using sed-style regex syntax."""