Do you really mean /win32/, or do you mean Windows? /win32/ doesn't include Cygwin.

This is (partly) why I wrote Devel::CheckOS - it lets you easily check for things like 'MicrosoftWindows' or 'Unix' without having to know (or look up) what all the values of $^O are. It's also less likely that a highly specialised module will go out of date when new platforms are supported (such as MirBSD or Dragonfly or Haiku) than that a scrap of code buried somewhere in several of your scripts will!