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echo $(( 0x7e )) echo $(( 0x7f )) echo $(( 0x80 )) a=$'\x80' recho "$a" a=( $'\x7e' $'\x7f' $'\x80' ) recho "${a[@]}" unset a a[0]=$'\x7e' a[1]=$'\x7f' a[2]=$'\x80' recho "${a[@]}" b1=$'\x7e' b2=$'\x7f' b3=$'\x80' unset a a=( "$b1" "$b2" "$b3" ) recho "${a[@]}"