[Fwirt]

G-code is like assembly language for CNC. It’s human readable, you can write it by hand if necessary, most machines will compile it internally to machine instructions, and there are a million different flavors with incompatible macros, etc. The flavor I’m most familiar with is Klipper’s interpreter, which will let you write macros, but that would technically be cheating since you could just stuff an entire program into a macro.

[jerf]

For anyone thinking of this, I promise to be suitably impressed (defined as "upvoting it when I see it on Hacker News") if anyone does manage to get a true G-code quine in this sense. Go for it.

[smallerize]

It's not cheating if you print both.