1*3e3895bfSKrzysztof Piecuch# $FreeBSD: head/bin/sh/tests/expansion/set-u3.0 221463 2011-05-04 22:12:22Z jilles $ 2024481c1SPeter Avalos 3024481c1SPeter Avalosset -u 4024481c1SPeter Avalosunset x 5024481c1SPeter Avalosv=$( (eval ': $((x))') 2>&1 >/dev/null) 6024481c1SPeter Avalos[ $? -ne 0 ] && [ -n "$v" ] 7