Issue #6561: '\d' in a regular expression should match only Unicode
character category [Nd], not [No].
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 383b56a..8b4d268 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -605,6 +605,27 @@
self.assertEqual(next(iter).span(), (4, 4))
self.assertRaises(StopIteration, next, iter)
+ def test_bug_6561(self):
+ # '\d' should match characters in Unicode category 'Nd'
+ # (Number, Decimal Digit), but not those in 'Nl' (Number,
+ # Letter) or 'No' (Number, Other).
+ decimal_digits = [
+ '\u0037', # '\N{DIGIT SEVEN}', category 'Nd'
+ '\u0e58', # '\N{THAI DIGIT SIX}', category 'Nd'
+ '\uff10', # '\N{FULLWIDTH DIGIT ZERO}', category 'Nd'
+ ]
+ for x in decimal_digits:
+ self.assertEqual(re.match('^\d$', x).group(0), x)
+
+ not_decimal_digits = [
+ '\u2165', # '\N{ROMAN NUMERAL SIX}', category 'Nl'
+ '\u3039', # '\N{HANGZHOU NUMERAL TWENTY}', category 'Nl'
+ '\u2082', # '\N{SUBSCRIPT TWO}', category 'No'
+ '\u32b4', # '\N{CIRCLED NUMBER THIRTY NINE}', category 'No'
+ ]
+ for x in not_decimal_digits:
+ self.assertIsNone(re.match('^\d$', x))
+
def test_empty_array(self):
# SF buf 1647541
import array