Re: nested parameter expansion

["jdh" <dhenman@gmail.com>]

Thanks for the information Roman & Peter.
Much appreciated.

---------

Peter Stephenson <p.w.stephenson@ntlworld.com> wrote:
> 
> > On 24 September 2020 at 09:03 jdh <dhenman@gmail.com> wrote:
> > I can't get, what should be simple nested parameter to work.
> > I think that $ndx needs to be expanded before the letter P before it 1st.
> > 
> > Simple example:
> > 
> >     ndx=1
> >     P1_ARRAY=("1" "2" "3")
> >     
> >     print ${P${ndx}_ARRAY}
> > #results in: "zsh bad substitution
> 
> I don't think there's a simple way to do it without an extra intermediate
> variable:
> 
> var="P${ndx}_ARRAY"
> print ${(P)var}
> 
> You could add some eval trickery, but I suspect it's not worth making it any
> more complicated.
> 
> pws
>