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Issue #1700, reported by Nguyen Quan Son, fix by Fredruk Lundh:
Regular Expression inline flags not handled correctly for some unicode characters. (Forward port from 2.5.2.)
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3 changed files with 34 additions and 1 deletions
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@ -525,7 +525,7 @@ def compile(p, flags=0):
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indexgroup[i] = k
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return _sre.compile(
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pattern, flags, code,
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pattern, flags | p.pattern.flags, code,
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p.pattern.groups-1,
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groupindex, indexgroup
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)
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@ -642,6 +642,36 @@ class ReTests(unittest.TestCase):
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self.assertEqual(re.compile("bla").match(a), None)
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self.assertEqual(re.compile("").match(a).groups(), ())
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def test_inline_flags(self):
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# Bug #1700
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upper_char = unichr(0x1ea0) # Latin Capital Letter A with Dot Bellow
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lower_char = unichr(0x1ea1) # Latin Small Letter A with Dot Bellow
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p = re.compile(upper_char, re.I | re.U)
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q = p.match(lower_char)
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self.assertNotEqual(q, None)
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p = re.compile(lower_char, re.I | re.U)
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q = p.match(upper_char)
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self.assertNotEqual(q, None)
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p = re.compile('(?i)' + upper_char, re.U)
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q = p.match(lower_char)
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self.assertNotEqual(q, None)
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p = re.compile('(?i)' + lower_char, re.U)
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q = p.match(upper_char)
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self.assertNotEqual(q, None)
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p = re.compile('(?iu)' + upper_char)
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q = p.match(lower_char)
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self.assertNotEqual(q, None)
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p = re.compile('(?iu)' + lower_char)
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q = p.match(upper_char)
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self.assertNotEqual(q, None)
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def run_re_tests():
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from test.re_tests import benchmarks, tests, SUCCEED, FAIL, SYNTAX_ERROR
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if verbose:
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@ -348,6 +348,9 @@ Core and builtins
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Library
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-------
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- Issue #1700: Regular expression inline flags incorrectly handle certain
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unicode characters.
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- Issue #1689: PEP 3141, numeric abstract base classes.
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- Tk issue #1851526: Return results from Python callbacks to Tcl as
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