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d � Z d � Z d � Z d � Z e d k r� e � n d S( sH Conversions to/from quoted-printable transport encoding as per RFC 1521.t encodet decodet encodestringt decodestringt =iL t 0123456789ABCDEFt i����( t a2b_qpt b2a_qpc C sG | d k r | S| d k r | S| t k pF d | k oC d k n S( s� Decide whether a particular character needs to be quoted.
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s� Read 'input', apply quoted-printable encoding, and write to 'output'.
'input' and 'output' are files with readline() and write() methods.
The 'quotetabs' flag indicates whether embedded tabs and spaces should be
quoted. Note that line-ending tabs and spaces are always encoded, as per
RFC 1521.
The 'header' flag indicates whether we are encoding spaces as _ as per
RFC 1522.
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� qqW| r�| j | � n d S( Ni����i t tds" usage: quopri [-t | -d] [file] ...s -t: quote tabss -d: decode; default encodei i s -ts -ds -t and -d are mutually exclusivet -s %s: can't open (%s)
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