# HG changeset patch
# User MRAB <regex@mrabarnett.plus.com>
# Date 1355678705 0
# Branch 3.3
# Node ID 1327f21e5e8df4f03f3df8e4ec55c5e05611d964
# Parent  858e6a2c17bc69ccaccdf2118179da40e56803d9
Tests for issue 16688

diff -r 858e6a2c17bc -r 1327f21e5e8d Lib/test/test_re.py
--- a/Lib/test/test_re.py	Sun Dec 16 01:00:37 2012 +0000
+++ b/Lib/test/test_re.py	Sun Dec 16 17:25:05 2012 +0000
@@ -1004,6 +1004,11 @@
         self.assertEqual(r, s)
         self.assertEqual(n, size + 1)
 
+    def test_bug_16688(self):
+        # Issue 16688: Backreferences make case-insensitive regex fail on
+        # non-ASCII strings.
+        self.assertEqual(re.findall(r"(?i)(a)\1", "aa \u0100"), ['a'])
+        self.assertEqual(re.match(r"(?s).{1,3}", "\u0100\u0100").span(), (0, 2))
 
 def run_re_tests():
     from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR