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    But OP uses double brackets, so no word splitting takes place. Commented Feb 15, 2019 at 16:22
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    Yes, this isn't really relevant to bash's [[ ]] construct. Commented Feb 15, 2019 at 16:34
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    Eh? [ $value1 -eq $value2 ] with an empty value1 would be '[' -eq 3 ']' with no '' on the left-hand side. Commented Feb 16, 2019 at 19:19
  • I was surprised too, but there's the evidence. Commented Feb 16, 2019 at 20:59
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    This answer does not directly relate to the question. I'm surprised it was accepted. Setting as community wiki. Commented Feb 20, 2019 at 20:23