dovecot - Mar 2012 - Shared folder prefix listed multiple times with dovecot 2.1.1

Hi,

after upgrading from 2.0.18 to 2.1.1 I noticed that I could not use
shared folders with mutt anymore. 2.1 lists the shared namespace prefix
once per user sharing an folder in LIST "" "%".

I also noticed, that with 2.1 the user folder (Shared/<username>) is no
longer tagged as \NoSelect.

Is this the intended behaviour and mutt simply cannot cope with it or
is it a dovecot problem?

Here an example with three users sharing a folder to the logged in user
with Dovecot 2.1.1:

2 LIST "" "*"
* LIST (\HasNoChildren) "/" "INBOX"
* LIST (\HasChildren) "/" "Shared/test"
* LIST (\HasNoChildren) "/" "Shared/test/Share"
* LIST (\HasChildren) "/" "Shared/test2"
* LIST (\HasNoChildren) "/" "Shared/test2/Share2"
* LIST (\HasChildren) "/" "Shared/test3"
* LIST (\HasNoChildren) "/" "Shared/test3/Share3"
2 OK List completed.


2 LIST "" "%"
* LIST (\HasNoChildren) "/" "INBOX"
* LIST (\Noselect \HasChildren) "/" "Shared"
* LIST (\Noselect \HasChildren) "/" "Shared"
* LIST (\Noselect \HasChildren) "/" "Shared"
2 OK List completed.


The same three users and config with Dovecot 2.0.18:

2 LIST "" "*"
* LIST (\HasNoChildren) "/" "INBOX"
* LIST (\Noselect \HasChildren) "/" "Shared/test"
* LIST (\Noselect \HasChildren) "/" "Shared/test2"
* LIST (\Noselect \HasChildren) "/" "Shared/test3"
* LIST (\HasNoChildren) "/" "Shared/test/Share"
* LIST (\HasNoChildren) "/" "Shared/test2/Share2"
* LIST (\HasNoChildren) "/" "Shared/test3/Share3"
2 OK List completed.


2 LIST "" "%"
* LIST (\HasNoChildren) "/" "INBOX"
* LIST (\Noselect \HasChildren) "/" "Shared"
2 OK List completed.


Markus



# 2.1.1: /opt/dovecot-2.1/etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-1-amd64 x86_64 Debian wheezy/sid 
auth_mechanisms = plain login
disable_plaintext_auth = no
listen = 192.168.56.11
mail_location = maildir:~/Maildir
mail_plugins = acl
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric
relational regex imap4flags copy include variables body enotify
environment mailbox date ihave namespace { inbox = yes location   prefix  
separator = /
  subscriptions = yes
  type = private
}
namespace {
  inbox = no
  list = children
  location = maildir:%%h/Maildir:INDEX=~/Maildir/index/shared/%%u
  prefix = Shared/%%u/
  separator = /
  subscriptions = no
  type = shared
}
passdb {
  args = /opt/dovecot-2.1/etc/dovecot/passwd
  driver = passwd-file
}
plugin {
  acl = vfile
  acl_anyone = allow
  acl_shared_dict = file:/var/lib/vdovecot/shared-mailboxes.db
}
protocols = imap
service auth {
  unix_listener auth-userdb {
    mode = 0600
    user = vdovecot
  }
}
ssl = no
userdb {
  args = /opt/dovecot-2.1/etc/dovecot/passwd
  driver = passwd-file
}
verbose_proctitle = yes
protocol imap {
  mail_plugins = acl imap_acl
}

On 8.3.2012, at 21.18, Markus Petri wrote:
> after upgrading from 2.0.18 to 2.1.1 I noticed that I could not use
> shared folders with mutt anymore. 2.1 lists the shared namespace prefix
> once per user sharing an folder in LIST "" "%".
> 
> I also noticed, that with 2.1 the user folder (Shared/<username>) is
no
> longer tagged as \NoSelect.
> 
> Is this the intended behaviour and mutt simply cannot cope with it or
> is it a dovecot problem?
Both. Dovecot shouldn't send duplicates, but mutt shouldn't break even
if it did. Also Dovecot probably should add \Noselect, especially if the mailbox
isn't really selectable (there's some weirdness between shared/user
being equal to shared/user/INBOX, but I'm not sure what to do about it).