[mel-base-devel] closing imap folder handles

[Kevin Raison]

First, I wanted to thank the developers for this package.  I have been 
using it to write a voicemail processing agent for a client and could 
not have done it without mel.  I do have one question:  it seems that 
imap folder connections don't actually get closed by the (close-folder) 
function.  I have a long-running process that eventually runs out of 
file descriptors because of too many open imap connections.  I have been 
careful to call close-folder on each connection when I am done.  I am 
using SBCL 1.0.17 and have not seen any other problems.  The function 
that gets called on a periodic basis follows:

(defmethod process-user-mail ((user user))
   (handler-case
       (let ((mbox (mel:make-imap-folder :host (server user)
                                         :username (username user)
                                         :password (password user)
                                         :mailbox "inbox")))
         (dolist (msg (mel:messages mbox))
           ;; do some interesting things with msg 
 

           )
         (mel:close-folder mbox))
     (error (condition)
       (logger :warning "mail check for ~a failed: ~a~%" (username user) 
condition))))

Am I missing something?

Thanks.
Kevin Raison