[imp] shared folder acl editing

[Liam Hoekenga]

We don't have ACL editing enable in our production 4.2 stuff, but  
we're considering deploying it.  The interface is quite different from  
our previous 4.0.x installation.

There doesn't seem to be a way to add new users?  I've tried this with  
both our localized copy, and the "fresh out of the tarball, unmodified  
other than configuration" copy.

I see..

Share mail folders
Current access to /folder/
User  List  Read  Mark (Seen) etc...
liamr 	x     x     x     x

and then an empty drop down under my username.  It doesn't contain any  
options, nor does it allow me to add a new user.

Strangely, when I copied and pasted that stuff, tho, I do get an  
element named "New User" in my buffer.

Anyhoo.. here's a screen shot..

     http://www-personal.umich.edu/~liamr/horde/share-mail-folders.png

My prefs.php says..

   $_prefs['acl'] = array(
     'value' => '',
     'locked' => false,
     'shared' => false,
     'type' => 'implicit');

We're using the unsupported imap_config options in config/servers.php,  
but I turned that off, and it didn't help at all.

     'acl' => array(
         'driver' => 'rfc2086',
     ),

is set, just like in cyrus section of servers.php.dist.

Any ideas?

Liam