jq has a very simple `jv_getpath()` that is a smaller "language" still (the "language" being an array of string and integer indices). I believe Jansson and others also have similar get-path functionality. They don't have the asterisk feature that this has (which is not like .[] in jq), and which looks admittedly quite useful (in terms of ease of use but also in terms of heap allocation avoidance). OTOH this doesn't allow access to non-ident-like object fields except via the asterisk feature. Neat!