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[3.10] bpo-45461: Fix IncrementalDecoder and StreamReader in the "unicode-escape" codec (GH-28939) (GH-28943)

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They support now splitting escape sequences between input chunks.

Add the third parameter "final" in codecs.unicode_escape_decode().
It is True by default to match the former behavior.
(cherry picked from commit c96d1546b1)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot) 2021-10-14 10:02:20 -07:00 • committed by GitHub
parent 70b150a366
commit 0bff4ccbfd
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9 changed files with 10949 additions and 5895 deletions
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Parser/string_parser.c
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@ -115,7 +115,7 @@ decode_unicode_with_escapes(Parser *parser, const char *s, size_t len, Token *t)
s = buf;
const char *first_invalid_escape;
v = _PyUnicode_DecodeUnicodeEscape(s, len, NULL, &first_invalid_escape);
v = _PyUnicode_DecodeUnicodeEscapeInternal(s, len, NULL, NULL, &first_invalid_escape);
if (v != NULL && first_invalid_escape != NULL) {
if (warn_invalid_escape_sequence(parser, *first_invalid_escape, t) < 0) {