Comment by thomasmg

The problem of XPath 3.1 is that it is very complex [1] - this is a long page. Compared to the 1.0 spec, it is just too complex in my view. For the open source project I'm working on, I never felt that the "old" XPath version is painful.

I think simplicity is better. That's why Json is used nowadays, and XML is not.

[1] https://www.w3.org/TR/xpath-31/ [2] https://jackrabbit.apache.org/oak/docs/query/grammar-xpath.h...