One of the design conderations was and is that the format is very strict (and that way predictable), but at the same time as helpful as possible in identifying, communicating and resolving issues.

To that end all error messages that can occur are handwritten, fully localized and shared across all eno libraries (see https://github.com/eno-lang/eno-locales/blob/master/specific...) and the API implicitly handles them for you when you write programs that consume eno.

So basically eno does no magic fallbacks of any sort when faults occur, but it is candid and friendly about it when it happens. :)