1# $FreeBSD: head/tools/regression/bin/sh/execution/set-x3.0 222907 2011-06-09 23:12:23Z jilles $
2
3key='must contain this'
4PS4='$key+ '
5{ r=`set -x; { :; } 2>&1 >/dev/null`; } 2>/dev/null
6case $r in
7*"$key"*) true ;;
8*) false ;;
9esac
10