env1.0 revision 222957 
1259210Sjmmv# $FreeBSD: head/tools/regression/bin/sh/parameters/env1.0 222957 2011-06-10 22:42:00Z jilles $
2259210Sjmmv
3259210Sjmmvexport key='must contain this'
4259210Sjmmvunset x
5259210Sjmmvr=$(ENV="\${x?\$key}" ${SH} -i +m 2>&1 >/dev/null <<\EOF
6259210Sjmmvexit 0
7259210SjmmvEOF
8259210Sjmmv) && case $r in
9259210Sjmmv*"$key"*) true ;;
10259210Sjmmv*) false ;;
11259210Sjmmvesac
12259210Sjmmv