Wow, that is really cool. I actually started typing in random characters and tracing the matches through the graph for the Regex from StackOverflow mentioned e

Wow, that is really cool. I actually started typing in random characters and tracing the matches through the graph for the Regex from StackOverflow mentioned earlier. I didn't know what the regex matches, so I played it like a game , trying to reach the finish by typing one character at a time. When I finished, I saw that I had typed "01/31/1691" and then realised that it's a regex for dates.