tools/regression/bin/sh/execution/set-x2.0

   1 # $FreeBSD: head/tools/regression/bin/sh/execution/set-x2.0 222882 2011-06-08 21:58:19Z 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