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lang-bash
${var+set}treatsvarasvar[0]. Does$(parameter+wordexpectparameterto be a nonarray variable? If not, how can I specifyparameterto represent an array?unset varanddeclare -i var, then rundeclare -p var. Does it output error such asbash: declare: var: not foundordeclare -i var? I would like to see if it treats array differently from other types. I have 4.3 only.${var[@]+set}is (:+fails on ksh93). What you used only test index 0.declare -i var.