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Fix re.fullmatch POSSESSIVE_REPEAT #7187

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Merged
youknowone merged 8 commits into from
Feb 20, 2026
Merged

Fix re.fullmatch POSSESSIVE_REPEAT #7187

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5f7a0d5
closes #7183
wvmscs Feb 17, 2026
b741934
closes #7183 - tests modifications
wvmscs Feb 17, 2026
5602e75
Auto-format: cargo fmt --all
github-actions[bot] Feb 17, 2026
298ba3d
Merge branch 'RustPython:main' into closes-#7183
wvmscs Feb 18, 2026
d3dff2e
closes #7183 - complements
wvmscs Feb 18, 2026
f62f117
Auto-format: ruff format
github-actions[bot] Feb 18, 2026
86533ff
Fix regex assertions in stdlib_re.py tests
wvmscs Feb 18, 2026
ad10935
Remove whitespace change
youknowone Feb 19, 2026
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closes #7183 - tests modifications
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@wvmscs
wvmscs committed Feb 17, 2026
commit b741934ea8063fd9bc2b5e9072ffb6e12a3e94de
14 changes: 11 additions & 3 deletions Lib/test/test_re.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2537,7 +2537,8 @@ def test_possessive_quantifiers(self):
self.assertIsNone(re.match("^x{}+$", "xxx"))
self.assertTrue(re.match("^x{}+$", "x{}"))

@unittest.expectedFailure # TODO: RUSTPYTHON
# correction #7183 make it successful as in Cpython3.14
#@unittest.expectedFailure # TODO: RUSTPYTHON
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def test_fullmatch_possessive_quantifiers(self):
self.assertTrue(re.fullmatch(r'a++', 'a'))
self.assertTrue(re.fullmatch(r'a*+', 'a'))
Expand Down Expand Up @@ -2565,6 +2566,11 @@ def test_fullmatch_possessive_quantifiers(self):
self.assertTrue(re.fullmatch(r'(?:ab)?+c', 'abc'))
self.assertTrue(re.fullmatch(r'(?:ab){1,3}+c', 'abc'))

# added for test of correction #7183
def test_possessive_repeat(self):
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self.assertTrue(re.fullmatch("([0-9]++(?:\.[0-9]+)*+)", "1.25.38"))
self.assertEqual(re.fullmatch("([0-9]++(?:\.[0-9]+)*+)", "1.25.38").groups()[0], "1.25.38")

def test_findall_possessive_quantifiers(self):
self.assertEqual(re.findall(r'a++', 'aab'), ['aa'])
self.assertEqual(re.findall(r'a*+', 'aab'), ['aa', '', ''])
Expand All @@ -2590,7 +2596,8 @@ def test_atomic_grouping(self):
self.assertIsNone(re.match(r'(?>x)++x', 'xxx'))
self.assertIsNone(re.match(r'(?>x++)x', 'xxx'))

@unittest.expectedFailure # TODO: RUSTPYTHON
# correction #7183 make it successful as in Cpython3.14
#@unittest.expectedFailure # TODO: RUSTPYTHON
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def test_fullmatch_atomic_grouping(self):
self.assertTrue(re.fullmatch(r'(?>a+)', 'a'))
self.assertTrue(re.fullmatch(r'(?>a*)', 'a'))
Expand Down Expand Up @@ -2629,7 +2636,8 @@ def test_findall_atomic_grouping(self):
self.assertEqual(re.findall(r'(?>(?:ab)?)', 'ababc'), ['ab', 'ab', '', ''])
self.assertEqual(re.findall(r'(?>(?:ab){1,3})', 'ababc'), ['abab'])

@unittest.expectedFailure # TODO: RUSTPYTHON
# correction #7183 make it success as in Cpython3.14
#@unittest.expectedFailure # TODO: RUSTPYTHON
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def test_bug_gh91616(self):
self.assertTrue(re.fullmatch(r'(?s:(?>.*?\.).*)\z', "a.txt")) # reproducer
self.assertTrue(re.fullmatch(r'(?s:(?=(?P<g0>.*?\.))(?P=g0).*)\z', "a.txt"))
Expand Down