Add Labeled Page Number token

For use in the metatag module it would be great if there was a token that returns not only the page number but also a string which indicates that this number is a page number. Moreover it should not appear on the first page.

To get this I added the following code to function token_token_info (after the definition of 'page-number'):

$info['tokens']['current-page']['labeled-page-number'] = array(
  'name' => t('Labeled page number'),
  'description' => t('The page number of the current page when viewing paged lists (if bigger then 1). Contains the word "page".'),
);

And in function function token_tokens (after the case 'page-number'):

case 'labeled-page-number':
if ($page = filter_input(INPUT_GET, 'page')) {
  // @see PagerDefault::execute()
  $pager_page_array = explode(',', $page);
  $page = $pager_page_array[0];
}
if ($page > 0) {
  $replacements[$original] = (string) ' - ' . t('Page') . ' ' . ($page + 1);
}
else {
  $replacements[$original] = (string) '';
}
break;