I'm glad to see you're a fellow vim user.  I did notice the highlighting, but no, I didn't do it on purpose, it was just a coincidence.  I was more concerned with getting the text format right.   I was actually surprised to find that I could get the whole thing into a "camel-sized" image ... the original program was almost 200 lines long.

If nobody else publishes a "spoiler" in the near future, I may go ahead and submit the original program, along with an explanation.