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From: Kai.Grossjohann@CS.Uni-Dortmund.DE
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Subject: Re: MIME composition (was: Storing the group a message has been written to)
Date: 14 Nov 1998 00:36:11 +0100
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Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

  > 1) One should be able to create arbitrarily complex multiparts
  > 2) The auto-save functions should work
  > 3) Saving to drafts should work

Suggestion: use a convenient in-buffer representation, and use the
`correct' MIME representation on disk.  Use format-alist to convert
between the two upon disk i/o.

There's two kind of MIME parts.  One is the inline part.  For it, you
need to know where it begins and where it ends, and what the
content-type is and stuff.  Use properties for this.

The other is the attachment part.  Put the data at the end of the
buffer and insert into the buffer a button-like representation.
Attach text properties to the button, telling you where at the end of
the buffer the real data is to be found, and stuff.

By `inline' and `attachment' I don't mean content-disposition, I'm
referring to the looks of the message composition buffer.  `Inline'
parts are shown inline while one is editing the messages, and
`attachment' parts are represented by a button.  For Emacs, only
textual parts will be inline, but for XEmacs, images can be inline,
too, right?

kai
-- 
Life is hard and then you die.