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  • +1: nice script style, but can you explain the particular syntax: ${a[$i]+_} by editing your answer and adding one bullet. The rest is perfectly understandable but you lost me there. Thank you. Commented Jul 12, 2016 at 11:28
  • 1
    @Cbhihe, I've added a bullet point that addresses this expansion. Commented Jul 12, 2016 at 19:23
  • Thank you very much. Very interesting. I did not think that was possible with arrays (non-strings)... Commented Jul 12, 2016 at 20:52