[ic] mv_credit_card_reference

[interchange-users@interchange.redhat.com (Javier Martin)]

Hi Mike,

May I follow up this conversation from long, long ago (2001-05-10). Here you
said:

> If you want to do it inline, i.e. after the &credit_card, do:
>
> &calc=<<EOF
>     # do something with $::Values->{mv_credit_card_reference};
> EOF
>
> Make sure that returns a true value, otherwise the profile will
> fail. You would be required to set any errors in $Session->{errors}
> yourself.


Now I have some doubts about this. The question is: should the return value
of &calc terminate the profile if it is non-true? In my experience the
results of &calc are always ignored. Look at Order.pm, sub check_order,
lines 904-905 (IC 4.8.3):


  ($val, $var, $message) = do_check(...);
  next if ! $var;


This means that the results of every pragma/check are ignored unless they
return something in the 2nd position of the return array. Looking at the
tag_calc code, I see that it always returns scalar!

So, what should be the good behavior of &calc=return 0;? To cause or not to
cause profile failure?

Javier