Name of attached file as quoted-printable

[AntonKedrov]

Filename could be encoded as QP, same way as Subject. I think that it should be decoded in BodypartFromMIME().

Example:

------=_NextPart_000_0010_01CDF1AB.47D55F80
Content-Type: text/plain;
    name="=?koi8-r?B?1MXT1C50eHQ=?="
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
    filename="=?koi8-r?B?1MXT1C50eHQ=?="


------=_NextPart_000_0010_01CDF1AB.47D55F80--

[smiley22]

Thank you,

may attributes of header fields use quoted-printable encoding? How do different mail clients deal with this? This is addressed in RFC2231, but I'm not sure how widely this has been implemented.

With web browsers at least, this seems to be quite a mess: http://stackoverflow.com/questions/93551/how-to-encode-the-filename-parameter-of-content-disposition-header-in-http

[NiKiZe]

I noted this in #55 with suggested DecodeWords fix.
The only issue would be if filename really contains "=?" but that is very unlikely right?

However, The example filename in this case should work fine if accessed with mail.Attachments ?
(since the .NET Attachment class do decoding of filename)

Http is a different beast, and it is not quite the same on mail.

Will revisit, but wanted to note this down while I have it in fresh memory.