#! /bin/sh

status=0

interrupt()
{
	mutex "echo -en '\e8\e[0m'"

	exit $status
}

mutex "echo -en '\e7'"

trap interrupt RETURN SIGHUP SIGINT SIGTERM SIGQUIT

column=0
row=0
label=$$

if [ $# -gt 1 ]
then
	label=$1
	if [ $# -gt 2 ]
	then
		column=$1 label=$2
		if [ $# -gt 3 ]
		then
			column=$1 row=$2 label="$3"
			shift
		fi
		shift
	fi
	shift
fi

while :
do
	mutex "echo -en '\e7\e[$row;${column}H\e[47;30;1m$label\e8\e[0m'"

	eval "$1 &>/dev/null"

	status=$?

	if [ $status -eq 0 ]
	then
		mutex "echo -en '\e7\e[$row;${column}H\e[42;37;1m$label\e8\e[0m'"
	else
		mutex "echo -en '\e7\e[$row;${column}H\e[41;37;1m$label\e8\e[0m'"
	fi

	eval "$2"
done