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Groups > gnu.bash.bug > #14999

Re: Error on arithmetic evaluation of `~0`.

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Chet Ramey (<chet.ramey@case.edu>) wrote:

> On 12/23/18 12:01 PM, Bize Ma wrote:
>
{…}

> > Both command line above should have printed "hello".
>
> No. 0 is the only valid subscript for a non-array variable. The difference
> between bash and other shells that implement this feature is that bash
> warns about negative subscripts.
>

If you say so: fine for me.

It still irks me a little that a `${var[-1]}` isn't the "last value"
(sometimes!, consistency?).

I haven't seen that documented anywhere, though.

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Re: Error on arithmetic evaluation of `~0`. Bize Ma <binaryzebra@gmail.com> - 2018-12-29 01:26 -0400

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