Our project is using something like that - it started nice and simple, but got lots of ugly hacks now. We have some values which use two different sub-delimiter

Our project is using something like that - it started nice and simple, but got lots of ugly hacks now. We have some values which use two different sub-delimiters, multiple “mini-formats”, values which contain the name of other keys, magic atrings to represent “null”, and so on. We got used to this, but results are pretty ugly. We get people confused about delimiter order, broken copy-paste, and so on. For the next project, I’d recommend something which can support complex structures. A schema validation would be nice, too.