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GH-96172 fix unicodedata.east_asian_width being wrong on unassigned code points #96207

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Merged
merged 4 commits into from
Aug 26, 2022
Merged

GH-96172 fix unicodedata.east_asian_width being wrong on unassigned code points #96207

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5688e6a
GH-96172 unicodedata: fix wrong default for east_asian_width
cfbolz Aug 23, 2022
5802448
add news entry
cfbolz Aug 23, 2022
5f37da7
add east_asian_width to the checksum test
cfbolz Aug 23, 2022
cb8b433
add comment, link to the standard, add explicit test for the changes
cfbolz Aug 25, 2022
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GH-96172 unicodedata: fix wrong default for east_asian_width 
also return the correct width for unassigned but reserved characters
according to EastAsianWidth.txt
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@cfbolz
cfbolz committed Aug 23, 2022
commit 5688e6afe15f60d93bc45c275bcd099482ca006b
12 changes: 12 additions & 0 deletions Lib/test/test_unicodedata.py
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Original file line number Diff line number Diff line change
Expand Up @@ -220,6 +220,18 @@ def test_east_asian_width(self):
self.assertEqual(eaw('\u2010'), 'A')
self.assertEqual(eaw('\U00020000'), 'W')

def test_east_asian_width_unassigned(self):
eaw = self.db.east_asian_width
# unassigned
for char in '\u0530\u0ece\u10c6\u20fc\uaaca\U000107bd\U000115f2':
self.assertEqual(eaw(char), 'N')
self.assertIs(self.db.name(char, None), None)

# unassigned but reserved
for char in '\uFA6E\uFADA\U0002A6E0\U0002FA20\U0003134B\U0003FFFD':
self.assertEqual(eaw(char), 'W')
self.assertIs(self.db.name(char, None), None)

def test_east_asian_width_9_0_changes(self):
self.assertEqual(self.db.ucd_3_2_0.east_asian_width('\u231a'), 'N')
self.assertEqual(self.db.east_asian_width('\u231a'), 'W')
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