RACSubject *subject = [RACReplaySubject replaySubjectWithCapacity:1];
[subject sendCompleted];
[subject finally:^{
    NSLog(@"never called");
}];
[subject subscribeCompleted:^{
    NSLog(@"called");
}];

void (^block)() = ^ {
    NSLog(@"like finally!");
};
[subject subscribeError:^(NSError *error) {
    block();
} completed:^{
    block();
}];

RACSubject *subject = [RACSubject subject];
[subject finally:^{
    NSLog(@"never called");
}];
[subject subscribeCompleted:^{
    NSLog(@"called");
}];
[subject sendCompleted];

RACSubject *subject = [RACReplaySubject replaySubjectWithCapacity:1];
[subject sendCompleted];
[[subject finally:^{
    NSLog(@"called now!");
}] subscribeCompleted:^{
    NSLog(@"called");
}];

RACSubject *subject = [RACReplaySubject replaySubjectWithCapacity:1];
[subject sendCompleted];
RACSignal *signalWithFinally = [subject finally:^{
    NSLog(@"finally block");
}];
[signalWithFinally subscribeCompleted:^{
    NSLog(@"first subscriber completed");
}];
[signalWithFinally subscribeCompleted:^{
    NSLog(@"second subscriber completed");
}];