[Dovecot] Bug(?): LSUB returns empty string although subscribed (was: Re: Cannot subscribe to shared folders)

[Lukas Haase]

Hi,

I did further investigation on this issue (using raw IMAP commands) and 
I think that this is a bug...

Am 15.02.2011 18:53, schrieb Lukas Haase:
Am 14.02.2011 14:54, schrieb Lukas Haase:
Hi,

I am unable to subscribe to shared folders (...)
everything seems to be correct (dovecot 1.2).

My configuration is the following (maybe that is the problem?!):

namespace private {
  separator = .
  prefix =
  inbox = no
  list = no
  hidden = yes
  location = maildir:~/Maildir-root
  subscriptions = yes
}

namespace private {
  separator = .
  prefix = INBOX.
  inbox = yes
  subscriptions = yes
}

namespace public {
  separator = .
  prefix = Shared.
  location = maildir:/var/mail/shared:INDEX=~/Maildir/shared:LAYOUT=fs
  subscriptions = YES / NO <--
}
[...]

In each case I make sure that all folders are subscribed, that is, the 
subscribe command returns OK and the subscribed folders are written into 
/var/mail/shared/subscriptions and ~/Maildir-root/subscriptions, 
respectively. Just to make sure:

# cat /var/mail/shared/subscriptions
NoSpamDrop
Public
SpamDrop
# cat /home/lukas/Maildir-root/subscriptions
Shared.NoSpamDrop
Shared.Public
Shared.SpamDrop
#

It turns out that if I set

1.) subscriptions = yes (in the public namespace above)
    the lsub command behaves correct:

    . list "" "Shared.*"
    * LIST (\HasNoChildren) "." "Shared.NoSpamDrop"
    * LIST (\HasNoChildren) "." "Shared.Public"
    * LIST (\HasNoChildren) "." "Shared.SpamDrop"
    . OK List completed.
    . lsub "" "Shared.*"
    * LSUB () "." "Shared.NoSpamDrop"
    * LSUB () "." "Shared.Public"
    * LSUB () "." "Shared.SpamDrop"
    . OK Lsub completed.
    . logout
    * BYE Logging out
    . OK Logout completed.
    closed

2.) ...but with subscriptions = no
    the lsub command returns an empty list ALTHOUGH the folders are
    subscribed:

    . list "" "Shared.*"
    * LIST (\HasNoChildren) "." "Shared.NoSpamDrop"
    * LIST (\HasNoChildren) "." "Shared.Public"
    * LIST (\HasNoChildren) "." "Shared.SpamDrop"
    . OK List completed.
    . lsub "" "Shared.*"
    . OK Lsub completed.
    . logout
    * BYE Logging out
    . OK Logout completed.

Now I am pretty sure that this is a bug. Maybe it is better to file a 
bug report?

Best regards,
Luke