[issue18814] Add codecs.convert_surrogateescape to "clean" surrogate escaped strings

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Note that provided Python implementations are rather a proof of concept. After discussion I'll provide more efficient C implementations, that should be 1-2 orders faster (and infinitely fast for common case of ASCII strings).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18814>
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