Re: [Help-bash] Remove an empty (null) element in an indexed array

[Chet Ramey]

On 4/24/13 5:28 PM, Jerry wrote:
> I have been playing around with a few ways to remove an empty or null
> element in an indexed array but nothing seems to works as expected.
> 
> Assume array:  declare -a FOO=(red blue green white black)
> 
> Now, address@hidden would return 5
> 
> If I then do: unset FOO[2}, the "green" element is erased and
> address@hidden returns 4. However, if I do: 
> 
> echo address@hidden
> 
> This is returned:
> 
> red
> blue
> 
> white
> black
> 
> A "null" is returned where the "green" element was.

That looks like a bug.  What version of bash are you using?  I wrote a
quick script similar to yours and could not reproduce your results using
bash-4.2.45 and bash-4.1.11.

Chet

-- 
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Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/