> From my early conversations with Larry, I recall that the reason is that
> RSTS/E BASIC-PLUS had nested trailing modifiers, and both Larry and I saw
> many abuses of these over the years. Therefore, he decided not to repeat
> that abomination, limiting it to precisely one level deep. I'm happy for
Thank you. This is the sort of answer I was looking for.
> Yeah, every once in a while, I've wanted the second layer, but I'm willing
> to rewrite the statement as a true normal if/while instead of a backwards
> if/while, and it *does* help the overall readability.
I'd concede that the actual useful uses are rare enough to not warrant giving
a feature that could turn hopelessly ugly quickly - even if the current
generation of tools make it easy to add the feature.