[philsnow]

I do the same thing (want to iterate on some complicated jq query -- or, let's be real, blunder around with my loose grasp of jq). I use https://github.com/lotabout/skim#interactive-mode instead of fzf.

  function jqsk {
    sk --tac --ansi --regex  --query . --multi --interactive --cmd '{}' \
       --bind 'enter:select-all+accept,ctrl-y:select-all+execute-silent(for line in {+}; do echo $line; done | pbcopy)+deselect-all' \
       --cmd-history=${HOME}/.sk_history --cmd-history-size=100000 \
       --no-clear-if-empty \
       --cmd-query "cat $1 | jq --raw-output --color-output --exit-status '.'"
  }

I run it like `jqsk file.json` and then change the `'.'` in the cmd-query to whatever I'm trying to do with jq.

I'll definitely look into some of the other mentioned solutions for this though. I settled on skim a year+ ago and haven't revisited.