As is, the behaviour makes it impossible to safely rename a file.

It makes it harder, at least:

sub myrename 
{ my $rename = ( $^O eq 'MSWin32' ) ? 'move -y' : 'mv -i';
  `$rename @_[0,1]`;
  return $!;
}
myrename('abc','def') or die $!;
[download]

I can't recall how to do this to the CORE, perhaps someone will remind me?

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