if newnick.lower() != oldnick.lower():
self.parent.users[newnick.lower()] = self.parent.users[oldnick.lower()]
del self.parent.users[oldnick.lower()]
if newnick.lower() != oldnick.lower():
self.parent.users[newnick.lower()] = self.parent.users[oldnick.lower()]
del self.parent.users[oldnick.lower()]