> "Buffers that don’t specify their length" This is a good thing. You just need proper escaping. To parse data with length field you need higher-level automata

> "Buffers that don’t specify their length" This is a good thing. You just need proper escaping. To parse data with length field you need higher-level automata (maybe even Turing-complete parser) than for delimited or quoted/brace-enclosed data.