| 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 | |
| ${THIS_SH} ./trap.tests > /tmp/xx 2>&1 | |
| diff /tmp/xx trap.right && rm -f /tmp/xx |