echo "warning: If output differing only in line numbers is produced, please" >&2
echo "warning: do not consider this a test failure." >&2
-${THIS_SH} ./trap.tests > /tmp/xx 2>&1
-diff /tmp/xx trap.right && rm -f /tmp/xx
+${THIS_SH} ./trap.tests > ${BASH_TSTOUT} 2>&1
+diff ${BASH_TSTOUT} trap.right && rm -f ${BASH_TSTOUT}