emit nickChanged(newnick, oldnick);
foreach(QString channel, ircuser->channels())
emit displayMsg(Message::Nick, BufferInfo::ChannelBuffer, channel, newnick, sender);
emit nickChanged(newnick, oldnick);
foreach(QString channel, ircuser->channels())
emit displayMsg(Message::Nick, BufferInfo::ChannelBuffer, channel, newnick, sender);