foo        unix  -       n       n       -       0       other
bar        unix  -       n       n       -       0       other
    -o xxx=yyy
    -o aaa=bbb
baz        unix  -       n       n       -       0       other
./postconf: warning: ./master.cf: unused parameter: aaa=bbb
./postconf: warning: ./master.cf: unused parameter: xxx=yyy
foo        unix  -       n       n       -       0       other
bar        unix  -       n       n       -       0       other
    -o xxx=YYY
    -o aaa=BBB
baz        unix  -       n       n       -       0       other
./postconf: warning: ./master.cf: unused parameter: aaa=BBB
./postconf: warning: ./master.cf: unused parameter: xxx=YYY
bar/unix/aaa = BBB
bar/unix/xxx = YYY
./postconf: warning: ./master.cf: unused parameter: aaa=BBB
./postconf: warning: ./master.cf: unused parameter: xxx=YYY