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It's entirely happy paths right now; it would be best to allow the test runner to also test for failures (check expected stderr and return code), then we could write those missing tests.

I think you can find a test somewhere in there with a commented code saying "FAWK can't do this yet, but yadda yadda yadda".

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It's funny because I'm evaluating LLMs for just this specific case (covering tests) right now, and it does that a lot.

I say "we need 100% coverage on that critical file". It runs for a while, tries to cover it, fails, then stops and say "Success! We covered 60% of the file (the rest is too hard). I added a comment.". 60% was the previous coverage before the LLM ran.

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