-echo "warning: UNIX versions number signals differently. If output differing" >&2
-echo "warning: only in line numbers is produced, please do not consider this" >&2
-echo "warning: a test failure." >&2
+echo "warning: UNIX versions number signals and schedule processes differently." >&2
+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