Strange !

arr = [1,2,3,4,5]
arr[0,2] = nil
=> ruby 1.8 : arr = [3,4,5]
=> ruby 1.9 : arr = [nil, 3,4,5]

ruby -v
ruby 1.9.1 (2008-10-28 revision 19983) [i386-mswin32]
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