It would appear to have been decided that the use of non-standard libraries is permissible (unless the question specifies otherwise), on the condition that the library being used is freely available and predates the asking date of the question.
Would requiring a non-standard preprocessor be perm...
Julia, 221 bytes
r()=rand(1:6)+rand(1:6);x=r();(x<4||x==11?print("Crapping out: $x"):(x%4==3?print("Natural: $x"):(println("Point: $x");while true y=r();println(y);(y==x?(print("Pass");break):(if y==7 print("Don't Pass");break;end))end)))
Let's parse some regex. Not quite the regex you are used to, but the formal regular expressions taught in courses on automata theory. Wikipedia knows what I'm talking about.
We have four operations. In order of priority, from highest to lowest:
Parenthesis. (a)
The contents of the parenthesi...
