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[3.13] GH-125069: Fix inconsistent joining in WindowsPath(PosixPath(...)) (GH-125156) (#125409)

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`PurePath.__init__()` incorrectly uses the `_raw_paths` of a given
`PurePath` object with a different flavour, even though the procedure to
join path segments can differ between flavours.

This change makes the `_raw_paths`-enabled deferred joining apply _only_
when the path flavours match.

(cherry picked from commit cb8e5995d8)

Co-authored-by: Barney Gale <barney.gale@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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Miss Islington (bot) 2024-10-13 20:12:57 +02:00 • committed by GitHub
parent cff627a27d
commit 094d95f62c
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3 changed files with 15 additions and 2 deletions
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9
Lib/test/test_pathlib/test_pathlib.py
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@ -107,6 +107,15 @@ def test_constructor_nested(self):
self.assertEqual(P(P('a'), P('b'), P('c')), P(FakePath("a/b/c")))
self.assertEqual(P(P('./a:b')), P('./a:b'))
@needs_windows
def test_constructor_nested_foreign_flavour(self):
# See GH-125069.
p1 = pathlib.PurePosixPath('b/c:\\d')
p2 = pathlib.PurePosixPath('b/', 'c:\\d')
self.assertEqual(p1, p2)
self.assertEqual(self.cls(p1), self.cls('b/c:/d'))
self.assertEqual(self.cls(p2), self.cls('b/c:/d'))
def _check_parse_path(self, raw_path, *expected):
sep = self.parser.sep
actual = self.cls._parse_path(raw_path.replace('/', sep))