dovecot - Jun 2013 - LIST command -- quoting of folder names

If I open an imap connection to a local maildir installation like so:

/usr/lib/dovecot/imap -o mail_location=maildir:$HOME/.mail/account/:LAYOUT=fs

And issue:

c list "" *

This is the result (this is a gmail account):

* LIST (\HasChildren) "/" [Gmail]
* LIST (\HasNoChildren) "/" [Gmail]/Spam
* LIST (\HasNoChildren) "/" [Gmail]/Starred
* LIST (\HasNoChildren) "/" [Gmail]/Trash
* LIST (\HasNoChildren) "/" [Gmail]/Drafts
* LIST (\HasNoChildren) "/" "[Gmail]/Sent Mail"
* LIST (\HasNoChildren) "/" [Gmail]/Important
* LIST (\HasNoChildren) "/" INBOX

Only "[Gmail]/Sent Mail" is quoted. This is messing up gnus, my MUA,
which truncates other folder names after the / separator.

Examples of testing I've seen online have shown all folder names quoted,
which would allow things to work correctly here. Is this something I can
affect with local configuration, or is there some other solution? Would
removing "LAYOUT=fs" affect this issue?

Thanks!
Eric

Output of dovecot -n:

# 2.2.4: /etc/dovecot/dovecot.conf
# OS: Linux 3.9.7-1-ARCH i686 Arch Linux 
info_log_path = /var/log/dovecot-info.log
log_path = /var/log/dovecot.log
protocols = imap

On 30.6.2013, at 5.02, Eric Abrahamsen <eric at ericabrahamsen.net> wrote:
> * LIST (\HasChildren) "/" [Gmail]
> * LIST (\HasNoChildren) "/" [Gmail]/Spam
> * LIST (\HasNoChildren) "/" [Gmail]/Starred
> * LIST (\HasNoChildren) "/" [Gmail]/Trash
> * LIST (\HasNoChildren) "/" [Gmail]/Drafts
> * LIST (\HasNoChildren) "/" "[Gmail]/Sent Mail"
> * LIST (\HasNoChildren) "/" [Gmail]/Important
> * LIST (\HasNoChildren) "/" INBOX
> 
> Only "[Gmail]/Sent Mail" is quoted. This is messing up gnus, my
MUA,
> which truncates other folder names after the / separator.
RFC 3501:

list            = "LIST" SP mailbox SP list-mailbox
list-mailbox    = 1*list-char / string
list-char       = ATOM-CHAR / list-wildcards / resp-specials
ATOM-CHAR       = <any CHAR except atom-specials>
atom-specials   = "(" / ")" / "{" / SP / CTL /
list-wildcards /
                  quoted-specials / resp-specials
list-wildcards  = "%" / "*"
resp-specials   = "]"

Looks to me like all the characters in the mailbox names are list-chars, so this
would be a gnus bug. Unless this affects some widely used client I'd rather
not change Dovecot to unnecessarily add quotes where they're not needed.
> Examples of testing I've seen online have shown all folder names
quoted,
> which would allow things to work correctly here. Is this something I can
> affect with local configuration, or is there some other solution? Would
> removing "LAYOUT=fs" affect this issue?
You can't affect this without modifying source code.