LIST % wildcard as the last character

[David Truckenmiller]

I’m implementing an IMAP server and I’m a bit confused about this sentence found in rfc 3501 6.3.8 (LIST command).   page 42, 3rd paragraph from bottom, 3rd sentence states:        If the "%" wildcard is the last character of a mailbox name argument, matching levels of hierarchy are also returned.   Given a hierarchy of selectable mailboxes on my storage device: /m/aaa /m/aaa/one /m/bbb /m/ccc/two and the client request:   C: A013 LIST "" "/m/aaa/%"   Which below is the correct response?  I don’t understand exactly which level “matching levels” means, siblings of %, or siblings of aaa.   R1: * LIST () "/" "/m/aaa/one"   -        or –   R2: * LIST () "/" "/m/aaa" R2: * LIST () "/" "/m/aaa/one"   -        or –   R3: * LIST () "/" "/m/aaa" R3: * LIST () "/" "/m/aaa/one" R3: * LIST () "/" "/m/bbb" R3: * LIST () "/" "/m/ccc"   Thanks in advance. -dave