(non-breaking) abbreviated arguments provided by SuperMAIN are not shown in USAGE

[codesections]

A module with the content

sub MAIN(Str :n(:$named)) {}

generates the following USAGE info:

$ raku SuperMAIN-test.raku --help
Usage:
  SuperMAIN-test.raku [-n|--named=<Str>]

When using SuperMAIN to automatically generate the short argument, however, the usage message is

$ raku SuperMAIN-test.raku --help
Usage:
  SuperMAIN-test.raku [--named=<Str>]

(even though the short option is still accepted).

This is pretty minor and might even be better (it keeps the USAGE output a bit cleaner). But I thought I'd mention it regardless, since it's a difference from the default that I didn't expect.

[nxadm]

I looked into this and it's on my TODO. However, this is not so straightforward.