When using nnimap-get-groups groups returned by the mailserver
(e.g. dovecot) which are not quoted ("") are not recognised as groups
and not listed.

Debugging the function reveals that they are returned from the imap server:

,----
| ...
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Gmail].All Mail".
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Gmail].Bin.
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Gmail].Drafts.
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Gmail].Important.
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Gmail].Sent.
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Gmail].Sent Mail".
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Gmail].Spam.
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Gmail].Starred.
| * LIST (%HasChildren) "." RMKrugGMAIL.[Mailbox].
| * LIST (%HasNoChildren) "." RMKrugGMAIL.[Mailbox].Later.
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Mailbox].To Buy".
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Mailbox].To Download".
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Mailbox].To Follow".
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Mailbox].To Read".
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Mailbox].To Watch".
| * LIST (%HasNoChildren) "." "RMKrugGMAIL.[Mailbox].Wait For Feedback".
| * LIST (%HasNoChildren) "." RMKrugGMAIL.Emacs-macosx.
| * LIST (%HasNoChildren) "." RMKrugGMAIL.INBOX.
| ...
`----

but e.g RMKrugGMAIL.[Gmail].Sent. and RMKrugGMAIL.[Mailbox].Later 
are not displayed in the server group list.

Please see the thread 
"One folder in local imap not seen" [1] for details and a fix by Eric
Abrahamsen.

Versions:
,----
| Gnus v5.13
| GNU Emacs 24.3.1 (x86_64-apple-darwin13.1.0, Carbon Version 1.6.0 AppKit
| 1265.19) of 2014-04-03 on Rainers-MacBook-Pro-3.local
`----

Cheers,

Rainer
 

Footnotes: 
[1]  http://thread.gmane.org/gmane.emacs.gnus.general/84768

-- 
Rainer M. Krug
email: Rainer<at>krugs<dot>de
PGP: 0x0F52F982