Re: idea about negative indexed array keys

[Alex fxmbsw7 Ratchev]

i know which it was

it was shift -1
to shift from the end

is there a way to do so ? just wondering

On Sat, Mar 13, 2021 at 4:32 PM Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>
wrote:

> correction of text
>
> past week*s*
>
> *and i know it didnt happen with bash 4 cause i dont have bash 4 since
> looong*
> *who knows what's been*
>
> On Sat, Mar 13, 2021 at 3:43 PM Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>
> wrote:
>
>> this one looks exactly like the one i rememeber
>> but there are factical mismatches, it happened in the past week, with
>> bash 5.1.4-maint
>> but seemfully somewhere else than direct array index
>>
>> On Sat, Mar 13, 2021 at 3:36 PM Greg Wooledge <greg@wooledge.org> wrote:
>>
>>> On Fri, Mar 12, 2021 at 05:11:19PM -0500, Eli Schwartz wrote:
>>> > On 3/12/21 4:58 PM, Alex fxmbsw7 Ratchev wrote:
>>> > > i saw, ${arr[-1]} == syntax error
>>> > >
>>> > > what about implenting it, -0 is the last -1 is the second last etc
>>> > >
>>> > > such negative values are already in ${..:<>:<>} implented, as a good
>>> small
>>> > > statement for the same style
>>> >
>>> > How did you accomplish the task of getting a syntax error for this? I
>>> > managed it with:
>>> >
>>> > $ declare arr=(foo bar baz "syntax error")
>>> > $ echo "${arr[-1]}"; echo "${arr[-2]}"
>>> > syntax error
>>> > baz
>>>
>>> unicorn:~$ bash-4.1 -c 'a=(a b c); echo "${a[-1]}"'
>>> bash-4.1: a: bad array subscript
>>>
>>> unicorn:~$ bash-4.2 -c 'a=(a b c); echo "${a[-1]}"'
>>> c
>>>
>>> Is that close enough?
>>>
>>>