*** sre_parse.py.orig	Sat Apr 19 09:37:24 2003
--- sre_parse.py	Sun Nov  2 07:28:49 2003
***************
*** 174,179 ****
--- 174,183 ----
              elif op in (ANY, RANGE, IN, LITERAL, NOT_LITERAL, CATEGORY):
                  lo = lo + 1
                  hi = hi + 1
+             elif op is GROUPREF:
+                 hi = hi + 1   # arbitrary: force hi to be different than lo
+                               # indicates GROUPREF has an unknown, potentially
+                               # variable width
              elif op == SUCCESS:
                  break
          self.width = int(min(lo, sys.maxint)), int(min(hi, sys.maxint))


*** test\test_re.py.orig	Wed Jul  2 21:03:04 2003
--- test\test_re.py	Sun Nov  2 07:06:14 2003
***************
*** 196,201 ****
--- 196,202 ----
                           ('a', 'a'))
          self.assertEqual(re.match(r'^(?:(a)|c)(\1)?$', 'c').groups(),
                           (None, None))
+         self.assertRaises(re.error, re.compile, r'(?<=(...)\1)')
  
      def test_groupdict(self):
          self.assertEqual(re.match('(?P<first>first) (?P<second>second)',