Sorry, but how is that not a visualization? If you're learning regular expressions that's about the best thing you could possibly 'see', even though it doesn't

Sorry, but how is that not a visualization? If you're learning regular expressions that's about the best thing you could possibly 'see', even though it doesn't show matches for specific input. And I do actually think it's beautiful. I pasted in a huge regex and was delighted at the output.