On Thu, 5 Oct 2006, Erik Kangas wrote:
Ok. I understand now that this happens as a choice by UW IMAP since "INBOX"
is a special folder in its own special name space and the fact that
"INBOX/" can have inferiors is specific to my setup. As such it is not
"wrong" that a list of "INBOX" says \NoInferiors.
Sorry for not responding to your Monday message. I was having trouble
working out a way to explain, in an intelligent manner, some of the design
issues that your comment here shows that you've figured out on your own.
So I don't have to worry about that now... ;-)
To what you've worked out, I can add is that inferiors of INBOX have a
semantic problem which you may not have realized. INBOX is a special
name; the protocol requires that it is case independent. Therefore INBOX,
inbox, iNBOX, INbox, InBoX, etc. are all the IMAP INBOX.
The IMAP protocol does not apply such a rule to any other name; thus there
is no protocol requirement that INBOX/foo and inbox/foo be the same name.
It could be; logic dictates that it should be; but it isn't in either the
protocol nor in how the c-client library implements it if you force the
matter.
That's what's really behind the decision to force \NoInferiors with INBOX.
It's a quagmire that I want to avoid.
So the actual question at hand is: is there any easy way to have UW IMAP not
return the "\NoInferiors" flag when the INBOX is formatted as "mix"?
I.e. a patch of the mix code or something?
The easiest thing to do is to make it global for all users. The routines
to modify are dummy_lsub() and dummy_scan(), removing the LATT_NOINFERIORS
from the mm_lsub() and dummy_listed() calls in these routines.
A more sophisticated test would perhaps be to set up a global:
static int dualuseinbox = -1;
Then in dummy_canonicalize () (which is called by both dummy_lsub() and
dummy_scan() before the annoucement of INBOX) have
if (dualuseinbox < 0) { /* know the dual-use status of INBOX yet? */
DRIVER *d = mail_valid (NIL,"INBOX",NIL);
dualuseinbox = (d && (d->flags & DR_DIRFMT)) ? T : NIL;
}
Then instead of removing the LATT_NOINFERIORS replace it with
dualuseinbox ? NIL : LATT_NOINFERIORS
Let me know if this helps.
-- Mark --
http://staff.washington.edu/mrc
Science does not emerge from voting, party politics, or public debate.
Si vis pacem, para bellum.
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