[vidarh]

There are thresholds in both directions, and I find the state_machines examples go way too far in the direction of verbosity to the point where it makes it harder rather than easier to see what is going on.

I'd argue the same for your P-lang example.

The state transitions in your example are trivial to the point where a "framework" is entirely unnecessary, but even then they are hidden inside the implementation details in a way that forced me to read the implementation to realise that they're trivial.

If I have a state machine that is complex enough that I want a "framework" to simplify things, my first requirement will be that it makes clear the state transitions and criteria separate from the implementation of them. Both the state_machines gem and the other Ruby gem mentioned in this thread have examples that in my opinion does a far better job at separating that.