I don't think you will. -d doesn't set $! to anything useable. I get "Bad file descriptor" in $! after using -d no matter whether it succeeded or failed. The $^E seems to make more sense "The system cannot find the file specified" when failed, but "Access is denied" when successfull. In either case, nothing that'd help. (I'm using perl v5.8.7 under WinServer 2k3 SP1)
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