Way too many slashes in MatchesRegex mismatch

[Jonathan Lange]

e.g.

AssertionError: '' does not match '\\d\\d\\d\\d-\\d\\d-\\d\\d \\d\\d:\\d\\d:\\d\\d,\\d\\d\\d - INFO - first\\n\\d\\d\\d\\d-\\d\\d-\\d\\d \\d\\d:\\d\\d:\\d\\d,\\d\\d\\d - INFO - second\\n'

=== modified file 'testtools/matchers.py'
--- testtools/matchers.py 2011-07-27 19:47:22 +0000
+++ testtools/matchers.py 2011-07-29 14:26:48 +0000
@@ -730,7 +730,7 @@ class MatchesRegex(object):

     def match(self, value):
         if not re.match(self.pattern, value, self.flags):
- return Mismatch("%r does not match %r" % (value, self.pattern))
+ return Mismatch("%r does not match %s" % (value, self.pattern))

 class MatchesSetwise(object):

probably fixes it.