The first regex crossword I ever saw — https://gregable.com/p/regexp-puzzle.html https://gregable.com/p/regexp-puzzle.html — also was sort of a jumble of letter

The first regex crossword I ever saw — https://gregable.com/p/regexp-puzzle.html https://gregable.com/p/regexp-puzzle.html — also was sort of a jumble of letters, but it actually encoded a secret message (I don’t want to say more — spoilers)