[gitgud]

Cool concept! Looks much more readable in this context:

    err = checkErr()
    if (err)
        return err

Vs

    returnif checkErr()

However, seems a bit overboard to add a reserved keyword for this 'exceptional' case.

[adamlouis]

Thank you! Definitely a bit overboard.

`returnif` is fun, but there's certainly value in the simplicity of restricted, opinionated syntax (e.g Go).