Update: The CL description of #A says "If some dimension of the array
whose representation is being parsed is found to be 0, all dimensions
to the right (i.e., the higher numbered dimensions) are also
considered to be 0."

On Wed, Apr 1, 2026 at 5:30 PM John Cowan <xxxxxx@ccil.org> wrote:
>
> CL (where all lower bounds are 0) doesn't round-trip empty arrays
> either.  Arrays with dimensions (0 0) and (0 2) both print as #2A(),
> which is read back with dimensions (0 0).  However, an array with
> dimensions (2 0) prints as #2A(() ())
>
> The element type is also discarded on output: if you read them in, you
> always get an array with the generic storage class. SBCL has an
> extension for this.
>
> On Wed, Apr 1, 2026 at 1:50 PM Bradley J Lucier <xxxxxx@purdue.edu> wrote:
> >
> > On Mar 31, 2026, at 12:08 PM, Bradley J Lucier <xxxxxx@purdue.edu> wrote:
> >
> > In your notation, how would you specify an empty array literal with lower bounds ‘#(0 0) and upper bounds ‘#(0 2)?
> >
> >
> > After more study, I’ll say that I don’t think one can specify an empty array literal with lower bounds ‘#(0 0) and upper bounds ‘#(0 2) using SRFI 268.
> >
> > Brad