Error :: distinct |{
    failed
}

reversed := 'value'->reverse_chrs
sum_text := {1 + 2}->to_str

continued := 'value'
->reverse_chrs
->reverse_chrs

commented := 'value' # an inline comment preserves continuation
->reverse_chrs

computed := 1 + 2
->to_str

fallible: i32 -> i32 ! Error: @ value: i32 { value! }

propagate: i32 -> i32 ! Error: @ value: i32 {
    result := {value->fallible}?
    result!
}