I think it would be useful if it were possible to parse the command line arguments without also executing the command actions. This would allow you add some logic in between parsing and execution.

A simple use case would be that you want to run a periodic check on startup, but only run for certain commands. For example you run a doctor command every day, but say you have a shell hook command (e.g. eval "$(my-cli hook zsh)") which you always want to be fast and never run the doctor checking logic when the hook command is run. The same could be said for auto update checking, etc.

NOTE: I've been able to hack this by adding custom parsing logic before calling rootCommand.parse. However, this is not ideal as my custom parsing logic doesn't have all the same logic as the cliffy parse command.