It turns out that we need "-h" on windows regardless, so I'm adding code to do this in this case.
We could probably do it in all cases? I assume it is ignored under Unix/Linux when you're running postmaster without "-i".
I'll be committing my change for windows in a couple of days, I may play with this under Linux and just stick it in for all platforms afterwards.
Can anyone think of any reason NOT to do this?
