You might get a kick out of Concise Encoding then (shameless plug). It focuses on security and consistency of behavior. And it supports comments and has first c

You might get a kick out of Concise Encoding then (shameless plug). It focuses on security and consistency of behavior. And it supports comments and has first class date types ;-) https://concise-encoding.org/ https://concise-encoding.org/ In particular: * How to deal with unrepresentable values: https://github.com/kstenerud/concise-encoding/blob/master/ce-structure.md#unrepresentable-values https://github.com/kstenerud/concise-encoding/blob/master/ce... * Mandatory limits and security considerations: https://github.com/kstenerud/concise-encoding/blob/master/ce-structure.md#security-and-limits https://github.com/kstenerud/concise-encoding/blob/master/ce... * Consistent error classification and processing: https://github.com/kstenerud/concise-encoding/blob/master/ce-structure.md#error-processing https://github.com/kstenerud/concise-encoding/blob/master/ce...