hai shi <[email protected]> added the comment:
> How about calling `encodings.normalize_encoding() in
> codecs.normalizestring()` to keep same behavior?(I create PR18845)
I have try this idea, but it make the testcase of test_io.py failed because
some object will call `codecs.Lookup()` in `__del__()`.-->extension module will
be cleaned before calling `__del__().`
> I would prefer that codecs.lookup() and encodings.normalize_encoding() behave
> the same. Either always ignore or always copy.
I try to add a `_Py_normalize_unicode_encoding()` in unicodeobject.c to support
non-ASCII encoding names' normalization(PR18987), but this PR caused many
testcases failed.
For example:
In master:
python3.9 -c "print('a\xac\u1234\u20ac\u8000\U0010ffff'.encode('iso-8859-15',
'namereplace'))"
result:
b'a\xac\\N{ETHIOPIC SYLLABLE SEE}\xa4\\N{CJK UNIFIED IDEOGRAPH-8000}\\U0010ffff'
after PR18987:
./python -c "print('a\xac\u1234\u20ac\u8000\U0010ffff'.encode('iso-8859-15',
'namereplace'))"
result:
b'a\xac\\N{ETHIOPIC SYLLABLE SEE}\\N{EURO SIGN}\\N{CJK UNIFIED
IDEOGRAPH-8000}\\U0010ffff'
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