Re: [Help-bash] declare -i

[Greg Wooledge]

On Thu, May 10, 2012 at 09:52:45AM -0400, Chet Ramey wrote:
> Where does the man page say it's ok to use negative subscripts when
> assigning arrays?

Second paragraph of "Arrays":

      An indexed array is created automatically if any variable is assigned
      to using the syntax name[subscript]=value.  The subscript is treated
      as an arithmetic expression that must evaluate to a number.  If
      subscript evaluates to a number less than zero, it is used as an
      offset from one greater than the array's maximum index (so a subcript
      of -1 refers to the last element of the array).