lnav/test/configs/installed/anno-test.json

{
    "$schema": "https://lnav.org/schemas/config-v1.schema.json",
    "log": {
        "annotations": {
            "org.lnav.test": {
                "description": "test annotation",
                "condition": ":c_ip IS NOT NULL AND $TEST_ANNO = '1'",
                "handler": "anno-test.sh"
            }
        }
    }
}