This relates to a car I was parked next to recently, that wouldn't start. I would have helped but didn't know how. The engine turned over on the starter (until the owner flattened the battery) but didn't fire. It had manual transmission. In old cars I've had, bump (push) starting would have been worth a shot, and we had the space to do it. But the car had a push-button starter, so the usual approach of turning the key to "running", selecting a high gear, and bringing the clutch up once moving would fail at the first step.
So how would you bump-start such a car - if it's even possible?