jq-capture.sh

#!/bin/bash

set -euo pipefail

declare -a PAT_ARGS
declare -a CAPTURE
declare PAT_COUNT=0
while (("$#" > 0)) && [ "$1" != "--" ]; do
    PAT_ARGS+=("--arg" "pat${PAT_COUNT}" "$1")
    CAPTURE+=("capture(\$pat${PAT_COUNT})")
    PAT_COUNT=$((PAT_COUNT + 1))
    shift
done
if (("$#" > 0)) && [ "$1" = "--" ]; then
    shift
fi

CAPTURE_JSON="$(jq -r --raw-input \
    'split(" ")
        | join(",")
        | "[" + . + "]"' <<< "${CAPTURE[@]}")"
jq --stream --raw-input \
    "${PAT_ARGS[@]}" \
    "${CAPTURE_JSON} | add // empty" \
    "$@"