[issue8271] str.decode('utf8', 'replace') -- conformance with Unicode 5.2.0

[Marc-Andre Lemburg]

Marc-Andre Lemburg <mal at egenix.com> added the comment:

I guess the term "failing" byte somewhat underdefined.

Page 95 of the standard PDF (http://www.unicode.org/versions/Unicode5.2.0/ch03.pdf) suggests to "Replace each maximal subpart of an ill-formed subsequence by a single U+FFFD".

Fortunately, they explain what they are after: if a subsequent byte in the sequence does not have the high bit set, it's not to be considered part of the UTF-8 sequence of the code point.

Implementing that should be fairly straight-forward by adjusting the endinpos variable accordingly.

Any takers ?

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<http://bugs.python.org/issue8271>
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