[Pidgin] #10650: Buddies do not stay grouped

[Pidgin]

#10650: Buddies do not stay grouped
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 Reporter:  mbateman  |        Owner:  rekkanoryo
     Type:  defect    |       Status:  new       
Milestone:            |    Component:  XMPP      
  Version:  2.6.3     |   Resolution:            
 Keywords:            |  
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Comment(by deryni):

 If trillian behaves the way you are saying it does then it means that
 trillian is "remembering" your local changes that did not work on the
 server and re-applying them the next time you receive your roster from the
 server (which will have them in the "wrong" group). I don't like the sound
 of that from a data standpoint, it means you can never be certain that the
 list you are seeing is the list on the server which means data may just
 "go missing" under the right circumstances. pidgin assumes the server list
 is correct and its local list is not when they disagree (this allows for
 changes made from other clients to display correctly in pidgin).

 The best pidgin could do to handle this would be to detect that the move
 failed and convert it to the addition of the buddy to a second group (or
 prompt for whether an extra group addition is the desired result), which
 is something I think we reasonably should do.

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Ticket URL: <http://developer.pidgin.im/ticket/10650#comment:5>
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