// the search_block_form element is the search's text field, it also happens to be the form id, so can be confusing
  $form['search_block_form']['#title'] = t('');
  $form['submit']['#value'] = t('Search'); 
  $output .= drupal_render($form);
  return $output;
}

Comments

Anonymous’s picture

Edit: superflous comment. Struggling with how to work with the issue cue sometimes.