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IshKebab

I agree that TOML sucks for nested structures.

JSON5 is probably the best option at the moment.

https://json5.org/

* Instantly obvious what the structure is (unlike YAML or TOML).

* Everyone knows JSON already. This just makes it a bit nicer.

* No noob security mistakes or type confusion caused by underquoting like YAML.

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Don't forget the truncation problem with YAML/TOML. A partially read/transmitted YAML/TOML file is often still considered valid.

That also makes it really easy to concatenate them, either `cp a.yaml + b.yaml c.yaml` or just `cat a.yaml >> b.yaml` - which is quite nice, compared to trying to do this with JSON etc... files.

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