[Patches] [ python-Patches-549133 ] RFC 2231 support for email package

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Patches item #549133, was opened at 2002-04-26 17:24
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Category: Modules
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Oleg Broytmann (phd)
Assigned to: Barry Warsaw (bwarsaw)
Summary: RFC 2231 support for email package

Initial Comment:
RFC 2231 defines the methods for encoding and decoding
parameters in mail headers.

This patch adds support for parameter decoding. It
changes the interface of Message._get_params_preserve()
- the function can return not only an ASCII string, but
also 3-tuple (charset, language, value). Utils.py
contains low-level functions. All users of
_get_params_preserve() changed, too - get_params(),
get_param(). Message.get_filename() returns either
ASCII or Unicode string.

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>Comment By: Martin v. Löwis (loewis)
Date: 2002-04-26 21:58

Message:
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Did you test this code with non-ASCII messages?

I discourage the use of the default encoding. Instead, if an
encoding is present, a Unicode object, or the information
about the original encoding should be returned. If
absolutely necessary, conversion to the default encoding is
acceptable if UnicodeError is caught for the encoding to the
default encoding.

I'm not sure how to deal with UnicodeErrors when
constructing the Unicode object: you probably should create
an exception, but have that exception carry the data that
you caused the problem, so that the caller has the
opportunity to process them by other means.

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