[Dovecot] 2.1: virtual plugin and lsub

[e-frog]

Hi Timo,

I'm using the virtual plugin and have 2 mailboxes configured in the 
"virtual" namespace (dovecot -n attached). Using lsub with dovecot 
2.0.15 leads to the following result:

1 lsub "" "virtual/*"
* LSUB () "/" "virtual/Lists"
* LSUB () "/" "virtual/unread"
1 OK Lsub completed.

However with dovecot 2.1 (latest hg as of today) and the same config 
there is a 3rd mailbox "virtual" listed which doesn't exist:

1 lsub "" "virtual/*"
* LSUB () "/" "virtual"
* LSUB () "/" "virtual/Lists"
* LSUB () "/" "virtual/unread"
1 OK Lsub completed.

Thunderbird shows the "virtual" mailbox as selectable and not grayed out 
as with 2.0.15. Clicking on that mailbox gives an error message "Mailbox 
doesn't exist: virtual".

Thanks,
e-frog
# 2.0.15 (0cf3215cdf2d): /etc/dovecot/dovecot.conf
# OS: Linux 3.0.0-12-generic-pae i686 Ubuntu 11.10
auth_debug = yes
deliver_log_format = msgid=%m: from=%f: %$
dict {
  dictionary = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
}
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
mail_debug = yes
mail_gid = vmail
mail_home = /home/vmail/%Ld/%Ln
mail_location = mdbox:~/mdbox
mail_plugins = quota virtual fts fts_squat
mail_uid = vmail
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 {
  hidden = no
  inbox = yes
  list = yes
  location =
  prefix =
  separator = /
  subscriptions = yes
  type = private
}
namespace {
  location = virtual:~/virtual
  prefix = virtual/
  separator = /
  subscriptions = no
  type = private
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  antispam_backend = spool2dir
  antispam_spam = Junk
  antispam_spool2dir_notspam = /home/vmail/learn-ham/%%020lu-%u-%%05luh
  antispam_spool2dir_spam = /home/vmail/learn-spam/%%020lu-%u-%%05lus
  antispam_trash = Trash
  fts = squat
  fts_squat = partial=4 full=10
  quota = dict:user::proxy::dictionary
  sieve = ~/dovecot.sieve
  sieve_before = /home/vmail/etc/sieve-global/
  sieve_dir = ~/sieve
}
postmaster_address = postmaster@ubuntu-test
protocols = " imap lmtp sieve pop3"
service anvil {
  unix_listener anvil {
    user = vmail
  }
}
service auth {
  unix_listener /var/spool/postfix/private/dovecot-auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-userdb {
    mode = 0600
    user = vmail
  }
}
service config {
  unix_listener config {
    mode = 0600
    user = vmail
  }
}
service dict {
  unix_listener dict {
    mode = 0600
    user = vmail
  }
}
service imap-login {
  inet_listener imaps {
    port = 0
  }
  process_min_avail = 2
  service_count = 0
}
service imap {
  executable = imap postlogin
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0660
    user = postfix
  }
  user = vmail
}
service postlogin {
  executable = script-login rawlog -t /home/vmail/bin/dovecot-postlogin.sh
  user = vmail
}
ssl = required
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
verbose_proctitle = yes
protocol lmtp {
  mail_plugins = quota virtual fts fts_squat sieve
}
protocol imap {
  imap_client_workarounds = tb-extra-mailbox-sep
  imap_id_log = *
  mail_plugins = quota virtual fts fts_squat imap_quota antispam
}