[issue3300] urllib.quote and unquote - Unicode issues

[Bill Janssen]

Bill Janssen <bill.janssen at gmail.com> added the comment:

For Antoine:

I think the problem that Barry is facing with the email package is that
Unicode strings are an ambiguous representation of a sequence of bytes;
that is, there are a number of different byte sequences a Unicode string
may have come from.  His ingenious use of raw-unicode-escape is an
attempt to conform to the requirement of having to produce a string, but
without losing any data, so that an application program can, if it needs
to, still reprocess that string and retrieve the original data.  Naive
application programs that sort of expected the result to be an ASCII
string will be unaffected.  Not sure it's the best idea; this is all
about just where to force unexpected runtime failures.

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