Re: Subscript flag (i) not working correctly on empty strings?

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

On Fri, Jan 6, 2023 at 9:24 AM Peter Stephenson
<p.w.stephenson@xxxxxxxxxxxx> wrote:
>
> > On 06/01/2023 16:01 Philippe Altherr <philippe.altherr@xxxxxxxxx> wrote:
> >
> > > s=; echo $s[(i)z];
> >
> > > 0
> >
> > Why is the last line 0 and not 1?
>
> Certainly looks plain wrong.
> None of the existing tests fail with this change.

I thought there was a discussion about this at some point in the past
... but it may have been limited to array cases.  I have the feeling
we concluded that (i) and (I) should produce the same result on empty
string for purposes of boolean tests, but I can't find such a
conversation in the archives.  I remain a little concerned that some
scripts are going to unexpectedly break, but can't point to anything,
and $anUnsetName[(i)z] returns nothing rather than 0, so it's probably
an unfounded worry.