tools/regression/bin/sh/execution/set-x3.0

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