test_file msg_16.txt msg_16-2.txt -r \*,-mime-version,-content-type
test_file msg_29.txt msg_29-1.txt -R Content-Type:title
test_file msg_18.txt msg_18-1.txt -R X-Foobar-Spoink-Defrobnit:\*
+test_file msg_01.txt msg_01-1.txt --set-header=X-Test:set
if [ "$RC" -eq 0 ]; then
echo "All tests passed!"