unlang Question about evaluating unavailable attributes to FALSE

[Stefan A.]

Hi,

if I'm using an expression like

	if (control:VSA1=~/something/ || control:VSA2 =~/something_else/)
{...}

I do get the information    "(Attribute control:VSA1 was not found)" in case
the VSA is not in the control context.
As the condition is '||', I would expect, that FR tries the next option, but
it does not. It sets the hole Expression to FALSE.

If I exchange the Options, it works for me, because VSA2 is always
available.

	if (control:VSA2=~/something/ || control:VSA1 =~/something_else/)
{...}

If I preset VSA1, it works too, but will add slightly more load.


Is there a solution for the missing Attribute to be ignored in '||'
conditions i.e. setting it discrete to FALSE, so tht FR is able to evaluate
the rest of the || expression? Would this be advisable?


Thank you.
Stefan