usr.bin/printf/printf.sh

95 	WANT="$1";  shift
98 	case "${WANT}" in
99 	('!')	WANT="$1"; negated=true; shift;;
109 		(${WANT})
111 	      "$* ... Expected anything but <<${WANT}>>, Received <<${RES}>>"
118 		(${WANT})
121 		    atf_fail "$* ... Expected <<${WANT}>> Received <<${RES}>>"
155 	WANT="$1";	shift	# we do not really expect this, but ...
160 		(${WANT})
162 			"$*  ... success${WANT:+ with expected <<${WANT}>>}"
168 		    atf_fail "$*  ... success with <<${RES}>> (not <<${WANT}>>)"
185 	(${WANT})
191      "$*  ... should fail with <<${WANT}>> did exit(${STAT}) with <<${RES}>>"