BIRD 2.0 Syntax issue with defined()

[Elmar K. Bins]

Hi Ondrej,

santiago at crfreenet.org (Ondrej Zajicek) wrote:

> > Am I wrongly assuming that defined() would check for the variable to exist
> > within BIRD's global scope (e.g., appear in the namespace)?
> 
> No, defined() checks for whether given route attribute is defined for the
> current route. So it requires known attribute names, like bgp_path or
> ospf_metric1.

Thank you for the explanation...well... do you happen to know how I can 
test for a variable existing?

Yours,
	Elmar.