I was reading the answers to this question and one of the answers were including some strange characters/contours. Does anyone know if this is a bug or not?
No, it's not a bug. You can do this kind of thing with unicode. See the source of the answer (especially try to highlight some of those characters with your mouse; you'll notice that many of them are considered one character). Also see http://en.wikipedia.org/wiki/Combining_character.