I’m neither place nor drink nor code - Yet I am all three, Depending on how you summon me. Who am I?

I’m the punchline of every bad intelligence test. I may not be bright, but I’m solid.

If you hunt you may find me. If you dig deep, you make me.

The day after tomorrow. First used in fifteen thirty five.

I have a head but no brain, a body but no blood. I get shorter the more I work, and my only job is to make your mistakes vanish into thin air. What am I?