Make sure we stick to POSIX-sed only. I _think_ this portable enough to
[mmh] / test / format /
drwxr-xr-x   ..
-rwxr-xr-x 2131 test-dp
-rwxr-xr-x 2720 test-fmtdump
-rwxr-xr-x 743 test-localmbox
-rwxr-xr-x 708 test-myhost
-rwxr-xr-x 1773 test-mymbox
-rwxr-xr-x 2343 test-myname