Re: [lemonade] SUBMITTED keyword, Outbox and Sent folders, and CATENATE/BURL

In the light of Peter's comments, I'd like to outline how Polymer is  
currently handling similar functionality.

Polymer doesn't use special purpose folders, although it can do.  
Instead its approach is based on using the INBOX primarily.

It's sending pattern is, roughly:

1) If it is helpful to stage the message on the server, do so, using  
tag APPEND (\Draft) ... - for reasons of my own bad programming, it  
will do this even when the message has already been saved - ie,  
multiple sending attempts cause multiple copies of the message, which  
is inarguably wrong. (It creates the new copies quite efficiently,  
using a copy-via-catenate construct, but still).

2) It then creates a signed URL, and submits the message via BURL.

3) Once it receives the final 2xx from the BURL, it marks the message  
with a $submitted flag that I vaguely intended mentioning at some  
point.

So \Draft's meaning is essentially unchanged - "this message has been  
created by the MUA, and may be incomplete". $submitted's meaning is  
obvious.

This yields a state table for messages of something like:

\Draft	$Submitted		State
0		0				Inbound message.
1		0				Message requires further action.
0		1				Message has been resubmitted.
1		1				Message has been "sent".

What I actually do, given this, is to set a viewing filter on DRAFT  
UNKEYWORD $Submitted to colour such messages in violent red, telling  
me that either the submission failed, or hasn't been attempted yet.  
Either way, I probably want to do something about it. (Like, finish  
editing, or attempt to submit it, or something).

Given this, my comments (in another message) which pick on Peter's  
points may be more understandable.

Dave.
-- 
Dave Cridland - mailto:dave@cridland.net - xmpp:dwd@jabber.org
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Infotrope Polymer - ACAP, IMAP, ESMTP, and Lemonade
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