user/dev discussion of public-inbox itself
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* message/rfc822 and other message/* attachments
@ 2020-04-20  9:20 Eric Wong
  0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2020-04-20  9:20 UTC (permalink / raw)
  To: meta

message/rfc822 is an attachment where another email message is
attached as-is, and that attached RFC822 message may have
attachments of its own (just like normal MIME containers).

Email::MIME doesn't descend into them (but gmime and notmuch do).
I started working on them manually in msg_iter(), but some
things need to be considered:

* current URLs to existing message/* attachments MUST NOT break

* Message-IDs, From, To, Cc, Subject, not-quoted, quoted,
  diff-specific stuff in attached messages should
  be indexed and searchable from Xapian, at least

* Date: searchability... probably not?  We already fail at
  odd messages having multiple Date headers...

* References and threading could be tricky.  Can probably
  be ignored in attachments, though References/In-Reply-To
  could probably be indexed via Xapian...

* content-based checksumming + deduplication could be
  subverted due to version mismatches, but it may not
  matter in practice.


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2020-04-20  9:20 message/rfc822 and other message/* attachments Eric Wong

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