If I remember well, I coded it like that : No group is considered as a 
virtual group like online/mobile/offline and dropping to it was recently 
fixed by disallowing it...
Phil
PS As I am the one who coded this part of code (based on the work done 
by Karel/Burger), I can reply easily to questions about this code (and 
to blames too :( ) ;)

Youness Alaoui a écrit :
> Indeed. Just so you know (in case you didn't realize it, but I think you 
> did). The 'no group' is a virtual group 
> (just like online/offline/mobile groups). It isn't listed as a group when we 
> fetch the contact list. In WLM, the 
> 'no group' doesn't appear, instead you have users on the top of the CL 
> without appearing inside a group (this 
> means you can't "collapse" the users who aren't in a group). The only way to 
> put a user in 'no group' is to 
> remove it from all groups. To delete a user, we remove it from all groups, it 
> becomes part of 'no group' then we 
> have to remove it from the 'no group' virtual group for the user to be 
> deleted from our CL.
> Humm.. I just tried in WLM and it seems they changed it a bit, now users in 
> 'no group' aren't appearing in the 
> root of the CL, they actually appear in a "Other contacts" group under all 
> other groups (instead of being on 
> the top like before). If you have the option 'group contacts offline' (our 
> hybrid mode), then the 'other 
> contacts' group is under the 'offline' group. In WLM, there is no such thing 
> as 'move contact to 'other 
> contacts' group, and there is no such thing as 'remove from all groups', but 
> there is the contextual menu :
> group options -> copy contact to               -> group1
>                                                   group1
>                                                   etc..
>                  move contact to               -> group1
>                                                   group2
>                                                   etc..
>                  remove contact from group
> The 'group options' don't appear if you sort by status. 
> The 'remove contact from group' removes the user from the current group (in 
> which you right clicked the 
> contact).
> The 'remove contact from group' doesn't appear if the user is in 'other 
> contacts'.
> If you have a user in multiple groups you have to "remove contact from group" 
> from all the groups in order for 
> it to go to 'other contacts'.
> As much as you can't drop a user to the 'offline' group, you also can't drop 
> a user to the 'other contacts' (so 
> you can't drag/drop a contact to 'no group' which would remove him from all 
> other groups).
> 
> That being said, I don't know what the solution with amsn should be. Right 
> now, if we drop a user to 'no group', 
> we get a bug report (because we send the ADC moving the contact to group '0' 
> (which is no group) and the server 
> responds with a 403 error, which we don't check (we do a [lindex $response X] 
> to get the group id to which the 
> user got moved to, and then we check the variable list_$group or something, 
> so if $group is empty, we get an 
> error because $list_ doesn't exist. we should check if [lindex $response 0] 
> is ADC or an error message to make 
> sure we don't 'handle' the ADC in the wrong way.
> 
> I think dropping should be disabled for no group (as well as mobile and 
> offline) and maybe just allow the 
> 'delete from group' instead of only 'delete'. But I don't see why a user 
> would want to put a contact in no 
> group, if he wants, he can create a group named "other contacts" or "no 
> group" or whatever, and move the contact 
> there. the 'no group' should be used ONLY when adding a new user, then once 
> you move it to a proper group, it 
> should stay in a 'valid' group. That's the purpose of 'no group' in my 
> opinion. I might be wrong though.
> 
> So.. solution would be to disable drag/drop to no group, and leave the 
> behavior as it is, if we want to allow 
> users to move to no group, then the 'delete from group' method used by WLM 
> would be the way to go.
> What do you think ?
> 
> p.s. : sorry for the YAHEFY (yet another huge email from Youness :p).
> 
> kaKaRoTo
> 
> 
> 
> On Fri, Jun 01, 2007 at 01:31:36PM +0200, Harry Vennik wrote:
>> I think the second way is the best. However, when a contact is  
>> dragged to No Group, and actually the contact is in multiple groups,  
>> then the user should be warned that moving a contact to No Group will  
>> remove it from any group it was in, and not just the group it was  
>> dragged from.
>>
>> Harry
>>
>> Op 1-jun-2007, om 13:19 heeft Mirko Hansen het volgende geschreven:
>>
>>> Hi guys,
>>>
>>> I tried to fix the bug reported on http://www.amsn-project.net/ 
>>> forums/viewtopic.php?t=3418 and there I noticed that the group  
>>> handling is some kind of incomplete relating especially to the "no  
>>> group". To the user this group appears a normal group, although it  
>>> isn't, but the user doesn't even know. So I think the user should  
>>> be able to handle with this special group almost the same as with a  
>>> normal group. Drag & drop to this group is/was buggy (did it ever  
>>> work?), but I think it should work. WLM doesn't allow this, there  
>>> it's only possible to remove a contact from all groups by using the  
>>> right-click menu. So we have two possibilities: 1. behave the same  
>>> way as WLM, not allowing to drop the contact on "no group" or 2. we  
>>> allow it and remove the contact from all other groups if it is  
>>> dropped on the "no group". I think the easiest and for n00bs most  
>>> logical way is 2, even if it might be a little bit strange that  
>>> copies of the contact in other groups will be removed, too, if you  
>>> drop the contact in the "no group". And as a logical consequence I  
>>> would add the possibility to move a contact to "no group" from the  
>>> context menu. What do you think?
>>> The other way, if you think the way WLM handles this, is better, we  
>>> should add something like the "remove contact from all groups" to  
>>> the right-click menu, otherwise the user has no easy way to move a  
>>> contact from a group to the "no group".
>>>
>>> Bye,
>>> Mirko
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