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
foo        unix  -       n       n       -       0       other
bar        unix  -       n       n       -       0       other
baz        unix  -       n       n       -       0       other