On encoding, when istext is set, newlines are not encoded, and white space at end of lines is. When istext is not set, \r and \n (CR/LF) are both encoded. When quotetabs is set, space and tabs are encoded.a2b_qp($module, /, data, header=False) --
Decode a string of qp-encoded data.crc32($module, data, crc=0, /) --