No tabs even when set in 'URLs to ignore'

On pages configured to ignore URLs, I was seeing no primary tabs rendered at all. In breaking out the page preprocessing into its own function, the check against the 'URLs to ignore' was being ignored. This resulted in the primary tabs being removed in the page preprocess function for all pages. Checking whether the $tabs variable is empty as a condition for unsetting the primary tabs fixed this issue for me.

At the end of the file contextual_tabs.module, insert an if statement like below.

<?php
function contextual_tabs_preprocess_page(&$variables) {
  $tabs = contextual_tabs_render();
  if (!empty($tabs)) {
  	unset($variables['tabs']['#primary']);
  }
  $variables['primarytabs'] = $tabs;
}

?>

I have never created a patch file, so the attached file may or may not apply correctly.