[Pidgin] #7501: Missing 'join' messages in MUC group chat

[Pidgin]

#7501: Missing 'join' messages in MUC group chat
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 Reporter:  gkuchta   |        Owner:  deryni
     Type:  defect    |       Status:  new   
Milestone:            |    Component:  XMPP  
  Version:  2.5.2     |   Resolution:        
 Keywords:  muc join  |  
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Comment(by xnyhps):

 I've attached a patch which mainly fixes #a14527, but also this bug, as I
 was editing the same part of the code anyway. A JabberChat now stores the
 time when it successfully joined so that it can be compared with the
 timestamp on delayed {{{<presence>}}} stanzas. Also, all presences before
 the join is done are considered users already there.

 The joining is considered successful when a presence of ourself is
 received ({{{<status code='110'/>}}} could be used, but is not always
 included).

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Ticket URL: <http://developer.pidgin.im/ticket/7501#comment:3>
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