There is a bug where it says...
@_ > 2 ? open $_,$_,$_ : open $_, $_;
open can accept more than two arguments (i.e. when piping to/from an external program), so, you should use instead...
@_ > 2 ? open $_,$_,@_[2..$#_] : open $_, $_;
Also, I am not sure that would work for the cases where the second argument is a string with a file handler embedded, as for instance open($fh, ">&STDOUT") or its three-args form open($fh, ">&", "STDOUT"). You will probably need to prefix those names with the calling package name.
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