[vidarh]

Exactly. You can leverage some of the standard library methods to figure out if a block did a next or exit normally vs. did a break, by e.g. abusing Fiber's (there are probably other ways too), and that might feel a bit dirty, but those are also part of the language.

I think it'd be nice if Ruby language constructs offered a few of the building blocks used by the standard library so that you could implement more of the standard library without dipping down into some low level mechanism - for my prototype Ruby compiler a priority was to implement as much as possible in Ruby, and there are certainly more things in the core classes that can't be done in pure Ruby than I'd like.

But it's not that much, and while there are plenty of warts, the inconsistencies are often smaller than people think.