On Wed, Nov 19, 2014 at 10:51 PM, Eduardo A. Bustamante López
<dual...@gmail.com> wrote:
> On Wed, Nov 19, 2014 at 10:32:52PM +0100, Piotr Grzybowski wrote:
>>  I do understand your point. Dont you understand the need to check in
>> a simple (I know, nothing works, nothing is simple ;-)) way that given
>> variable has value? no matter what it is?
>
> there:
>
> is_defined3() {
>     { declare -p -- "$1" && ! declare -fp -- "$1"; } 2>/dev/null >&2
> }

 I dont know, but looks like a reusable code to me.

cheers,
pg

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