[Rd] attachments for R-devel e-mails

[Martin Maechler]

      >> There was no attachment: since these are (I presume)
      >> binary files, can ou
      >> not put them on a website (as suggested by the posting
      >> guide)?

    > Sorry, I would have if I could, but can't at present. The
    > attachments got through OK to me at least, though. If
    > anyone does have an interest in the files, let me know
    > off-list and I'll re-send as a zip or somesuch.

Currently, the following attachment MIME types are accepted for
R-devel {R-help has less}:

 text/plain
 text/x-diff
 text/x-patch
 application/pgp-signature
 application/postscript
 application/pdf
 application/x-tar
 application/x-compressed-tar
 application/x-gzip
 image/png
 message/rfc822

However, many mailers just send

 application/octet-stream

which means ``unspecified binary'' and which has often been used for
sending viruses etc.  Further note, that I've not allowed the
common jpg and gif image types on purpose, since they are the
ones spammers have been using for a while now.

Regards,
Martin Maechler, ETH Zurich,
R-{help|devel|...} list and mailman site maintainer.