draft-ietf-jmap-mail: Need to reuse IMAP Keyword registry

[aamelnikov]

See RFC 5788 and https://www.iana.org/assignments/imap-keywords/imap-keywords.xhtml#imap-keywords-1.

[brong]

Also if we're going to use $Seen, etc to map \Seen from IMAP, we need to register those 4 system keywords in the IANA registry saying "reserved for JMAP, do not use in IMAP" and add "updates 5788" to the spec.

[chibenwa]

Have a look to #61 which was previously discussed on the mailing list.

Moreover I would insist on having a uniformed view of when a messages is read (and co...) between IMAP and JMAP thus using %Seen and register it in IANA would be a bog mistake in my eyes

[brong]

I think I didn't explain it well enough. \Seen via IMAP would map to $Seen via JMAP, to make the JMAP view simpler (those 4 keywords aren't magically special) and avoid the \ quoting horror show.

[brong]

Chris Newman will help with this (from IETF99)

[cjnewman]

Here's a pull request: #208

[neilj]

Closed by #208.