Hmmm, I see. (I actually never thought about ^$ matching on different lines before, but good point).
Would suggest `^N1\s+-(?:(?!\n)\s)+(\w.*)$` (i.e. match whitespace that's not newline). Or we can hold off a bit on merging this translator and I will just introduce a way to override RIS mappings into the RIS translator (I never liked the regexp approach and it seems to be used a lot).