#!/bin/bash

tmpfile1=$(mktemp)
if [ ! -w $tmpfile1 ] ; then
        echo "Failed to create tmp file" >&2
        exit 1
fi

touch $tmpfile1

RULESET="include \"$tmpfile1\"
)
"

tmpfile2=$(mktemp)
if [ ! -w $tmpfile2 ] ; then
        echo "Failed to create tmp file" >&2
        exit 1
fi

tmpfile3=$(mktemp)
if [ ! -w $tmpfile3 ] ; then
        echo "Failed to create tmp file" >&2
        exit 1
fi

echo "/dev/stdin:2:1-1: Error: syntax error, unexpected ')'
)
^" > $tmpfile3

$NFT -I/tmp/ -f - <<< "$RULESET" 2> $tmpfile2
$DIFF -u $tmpfile2 $tmpfile3

rm $tmpfile1 $tmpfile2 $tmpfile3