radio field busted

ok, i think i have the solution.. but not sure why the code was written like this???

the forms module validates fields on its own.. like radio buttons.. but the code that is used, specifically this:

function forms_validate($form, $edit) {
  $error = false;
  
  foreach ($form->fields as $field) {
    if ($field->required && (!$edit[$field->name] || $edit[$field->name] === false)) {
      form_set_error($field->name, t('%field is required', array('%field' => '<em>'.$field->title.'</em>')));
      $error = true;
    }

is wrong!!

Radio buttons can have a valid selection of "0".

The part that is more odd though is that this function exists at all.. the forms module is using (as it should) the forms api; which already does the checks... and it does them correctly... you can see the code runs through both.. it first does the std forms api check.. which passes in my example (as it should) but then runs the forms module check (which is coded wrong and which fails)... but i simply commented out the form_set_error and error = true lines above and things seem to work correctly now... i.e. if i have radios that dont get a default (which for incorrectly is anytime i dont have a value of 0 as an option) and i submit.. the form fails (from std forms api check).. and if i submit a value of 0.. it passes; as it should.