I wasn't aware until now, that jq is actually a full blown functional programming language. Originally it was inspired by Haskell and the very first version(s) of jq were actually implemented in Haskell. Only later jq got ported over to C. To have an idea how powerfull the jq language is, there is also a jq implementation purely written in jq: https://github.com/wader/jqjq#jq#json
