Formatters override default formatters

The formatters override the default formaters, implying that all links have to go through shrinktheweb. However, in our use case, we only wanted some links to have the preview.

I have modified the hook_field_formatter_info() (see below) to prepend "stw_" to each formatter so that they don't override the default formatters, instead adding new formatters.

/**
 * Implementation of hook_field_formatter_info().
 */
function shrinktheweb_field_formatter_info() {
  return array(
    // -- Link module ----------------------------
    'stw_link_default' => array(
      'label' => t('[ShrinkTheWeb] Title, as link'),
      'field types' => array('link_field'),
      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
    ),
    'stw_link_url' => array(
      'label' => t('[ShrinkTheWeb] URL, as link'),
      'field types' => array('link_field'),
      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
    ),
    'stw_link_plain' => array(
      'label' => t('[ShrinkTheWeb] URL, as plain text'),
      'field types' => array('link_field'),
      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
    ),
    'stw_link_short' => array(

      'label' => t('[ShrinkTheWeb] Short, as link with title "Link"'),
      'field types' => array('link_field'),
      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
    ),
    'stw_link_label' => array(
      'label' => t('[ShrinkTheWeb] Label, as link with label as title'),
      'field types' => array('link_field'),
      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
    ),
    'stw_link_separate' => array(
      'label' => t('[ShrinkTheWeb] Separate title and URL'),
      'field types' => array('link_field'),
      'multiple values' => FIELD_BEHAVIOR_DEFAULT,
    ),
  );
}