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�Zeed�Zdd�Zeed�Zeed�Zddd�ZdS) z� Routines for manipulating RFC2047 encoded words.

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    This function expects exactly such a string (that is, it does not check the
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    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
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aEncode string using the CTE encoding that produces the shorter result.

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    where '*lang' is omitted unless the 'lang' parameter is given a value.
    Optional argument charset (defaults to utf-8) specifies the charset to use
    to encode the string to binary before CTE encoding it.  Optional argument
    'encoding' is the cte specifier for the encoding that should be used ('q'
    or 'b'); if it is None (the default) the encoding which produces the
    shortest encoded sequence is used, except that 'q' is preferred if it is up
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