Nowadays @a[10] in a signature is parsed as a shaped array (and gives a fitting
error message since shape declaration is NYI):
$ perl6 -e 'sub foo(@a[10]) { }'
===SORRY!=== Error while compiling -e
Shape declaration is not yet implemented; please use whitespace if you meant a
subsignature for unpacking
at -e:1
------> sub foo(@a⏏[10]) { }
expecting any of:
shape declaration
Should we add a test for this error message and close this ticket or should the
ticket stay open until shape declaration is implemented?
