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j d Zd Z G d de Z e Zde e d < d Z d Z d Z d Z d Z!ee dZ"d Z#e e dZ$e e!dZ%d d Z&d S ) z Routines for manipulating RFC2047 encoded words.
This is currently a package-private API, but will be considered for promotion
to a public API if there is demand.
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d | Y nw xY w||||fS )u Decode encoded word and return (string, charset, lang, defects) tuple.
An RFC 2047/2243 encoded word has the form:
=?charset*lang?cte?encoded_string?=
where '*lang' may be omitted but the other parts may not be.
This function expects exactly such a string (that is, it does not check the
syntax and may raise errors if the string is not well formed), and returns
the encoded_string decoded first from its Content Transfer Encoding and
then from the resulting bytes into unicode using the specified charset. If
the cte-decoded string does not successfully decode using the specified
character set, a defect is added to the defects list and the unknown octets
are replaced by the unicode 'unknown' character ﷿.
The specified charset and language are returned. The default for language,
which is rarely if ever encountered, is the empty string.
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