T=`mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXX`
trap 'rm -rf $T' 0
cd $T || exit 3
mkfifo fifo1
trapped=
trap trapped=1 QUIT
{ kill -QUIT $$; sleep 1; exit 4; } >fifo1 &
wait <fifo1
r=$?
[ "$r" -gt 128 ] && [ -n "$trapped" ]