Fix regex so that it works with Python 3.6.

See <https://docs.python.org/3/library/re.html#re.LOCALE>.

Copied from upstream bug report:
https://bugs.launchpad.net/python-mox3/+bug/1665266

From 05064cdb6ea7a16450c6beae2b6f7c6074212a69 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Thu, 16 Feb 2017 00:24:10 -0800
Subject: [PATCH] RegexTest: python3.6 compatibility

These fixes are backward-compatible with older python versions:

* raw strings fix invalid escape sequences
* flags=8 fixes ValueError: cannot use LOCALE flag with a str pattern
---
 mox3/tests/test_mox.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mox3/tests/test_mox.py b/mox3/tests/test_mox.py
index 15ac565..3a1af17 100644
--- a/mox3/tests/test_mox.py
+++ b/mox3/tests/test_mox.py
@@ -312,12 +312,12 @@ class RegexTest(testtools.TestCase):
     def testReprWithoutFlags(self):
         """repr should return the regular expression pattern."""
         self.assertTrue(
-            repr(mox.Regex(r"a\s+b")) == "<regular expression 'a\s+b'>")
+            repr(mox.Regex(r"a\s+b")) == r"<regular expression 'a\s+b'>")
 
     def testReprWithFlags(self):
         """repr should return the regular expression pattern and flags."""
-        self.assertTrue(repr(mox.Regex(r"a\s+b", flags=4)) ==
-                        "<regular expression 'a\s+b', flags=4>")
+        self.assertTrue(repr(mox.Regex(r"a\s+b", flags=8)) ==
+                        r"<regular expression 'a\s+b', flags=8>")
 
 
 class IsTest(testtools.TestCase):
-- 
2.10.2

nu/packages/acl.scm'>
<input type='hidden' name='id' value='40561d024947fb5d5fd553921afd11d8f56562bf'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=40561d024947fb5d5fd553921afd11d8f56562bf'>root</a>/<a href='/guix/log/gnu?id=40561d024947fb5d5fd553921afd11d8f56562bf'>gnu</a>/<a href='/guix/log/gnu/packages?id=40561d024947fb5d5fd553921afd11d8f56562bf'>packages</a>/<a href='/guix/log/gnu/packages/acl.scm?id=40561d024947fb5d5fd553921afd11d8f56562bf'>acl.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/acl.scm?id=40561d024947fb5d5fd553921afd11d8f56562bf&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-03-16 06:44:18 -0400'>2018-03-16</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=c0d56bb227799537f9715668be793cd9cfe3d251'>gnu: acl: Use invoke instead of system*.</a><span class='msg-avail'>...</span></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-03-15 16:41:02 +0100'>2018-03-15</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=4403030b7de2485dbeb6ee54c56551a2bd2b5244'>gnu: acl: Fix build failure.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2018-02-16 13:14:26 -0500'>2018-02-16</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=150062f19060687dbf8e2cbe6a22c2f8600e7c4e'>Merge branch 'master' into core-updates</a></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-02-16 11:11:40 +0100'>2018-02-16</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=340978d7b054dcde6c3334267b40a8293eb0ce85'>gnu: Use HTTPS for supported nongnu.org home pages.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-11-09 19:49:06 +0200'>2017-11-09</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=0f1adf454d5fa96291b94dbdbd34640b8c581116'>gnu: acl: Fix test regression with perl-5.26.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2017-11-04 13:09:06 -0400'>2017-11-04</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=7183c4bf570b09277f82c6487566e81d88ae2fcb'>gnu: acl: Fix typo.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-11-04 10:47:39 -0400'>2017-11-04</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=2d433b5363fecba0d63caa1844c937dec4ccc23b'>gnu: acl: Enable tests.</a><span class='msg-avail'>...</span></td><td>Kei Kebreau</td></tr>
<tr><td><span title='2017-10-19 09:04:42 +0300'>2017-10-19</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=79272039a9586aef8105007900b62dcb4b00ca9b'>gnu: acl: Use 'modify-phases' syntax.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2016-09-28 17:54:50 +0300'>2016-09-28</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=b94a6ca074f00b3f769933d074853d3c3ca50d00'>gnu: Add and use gettext-minimal.</a><span class='msg-avail'>...</span></td><td>Alex Kost</td></tr>