ned+ietf-822(_at_)mrochek(_dot_)com wrote:
Quite right. Content disposition paramaters are supposed to carry generally
meaningful information that may be needed to act on the associated
disposition.
So we have filename, creation date, and modification date parameters,
which are
all useful when putting message content in a file, which is what the
attachment disposition often ends up doing.
Creator/author identity only kinda sorta falls into this category; IMO
version and copyright information miss it by a mile.
The above and Keith's comments w.r.t. copyright notwithstanding, what about
some indication by the author to indicate a preference against long-term
archiving of the media content? That is distinct from copyright and from
the inherent ephemeral copying necessary for transport, but is meant to
address long-term archiving. There is now in use an undocumented, unofficial
header field "Archive" used in Usenet messages for such an indication; might
that be suitable as a Content-Disposition parameter instead?