I keep an eye on jaq, but there are some holes in the story. jaq 3.0 is faster than Linux distro builds of jq, but jq built correctly is faster than jaq. As far as I can tell the performance reputation of jq is caused by bad distro packaging.

Thank you for the recommendation.

It looks like jaq has already progressed much further in the right direction than jsongrep has just started in the not-quite-as-right direction.