And notice that we still miss OP_CAT to make it complete. We miss it, because it can be used to do quines, and other naughty stuff, [...]
I see what you did there. That describes me perfectly.
😿Thank you for the interesting technical discussion. Any new ideas for how to solve the puzzle? I won’t give any more hints; and I don’t want to pry about anything you are secretly thinking may let you win. Nonetheless, I myself am a curious cat.