Yes, my comment is valid only for *nix and macOS.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^3: Easy way to check if a file is open needed. -- MSWin32 by choroba
in thread Easy way to check if a file is open needed. by Apt_Addiction

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