That's a ridiculous question to ask - I could answer it in < 60 seconds with Snippet Compiler, and if I ever worked in a code base that depended on the functionality - it'd be quickly refactored out of existence.
The best answer is "that's a stupid design, don't do that and you won't have to parse the language spec to know what it's going to do".
If I was the interviewee, I'd think very highly of your geek trivia cred, and would perhaps invite you to the next game of Geek Trivial Pursuit. But, I'm not so sure I'd want to work with/for you. If that's your goal, by all means ask away.
- Note that in an informal situation, geek trivia like this can be fun and entertaining. But, to an interviewee, an interview is anything but fun or informal - why further agitate it with trivial questions that the interviewee doesn't know if you take seriously or not?
