drupal_module__migrateunfuddle/migrateunfuddle.module

<?php
/**
 * @file
 * Import an Unfuddle dump into a Drupal Casetracker instance
 *
 * @copyright Coyright (c) 2011 Ouest Systèmes Informatiques (OSI, OSInet)
 * @license Licensed under the General Public License version 2 and later, and
 *   the CeCILL 2.0 license.
 */

function migrateunfuddle_migrate_api() {
  $api = array(
    'api' => 2,
  );

  // dsm(get_defined_vars(), __FUNCTION__);
  return $api;
}

/**
 * Lifted from Drupal 7
 */
function drupal_clean_css_identifier($identifier, $filter = array(' ' => '-', '_' => '-', '/' => '-', '[' => '-', ']' => '')) {
  // By default, we filter using Drupal's coding standards.
  $identifier = strtr($identifier, $filter);

  // Valid characters in a CSS identifier are:
  // - the hyphen (U+002D)
  // - a-z (U+0030 - U+0039)
  // - A-Z (U+0041 - U+005A)
  // - the underscore (U+005F)
  // - 0-9 (U+0061 - U+007A)
  // - ISO 10646 characters U+00A1 and higher
  // We strip out any character not in the above list.
  $identifier = preg_replace('/[^\x{002D}\x{0030}-\x{0039}\x{0041}-\x{005A}\x{005F}\x{0061}-\x{007A}\x{00A1}-\x{FFFF}]/u', '', $identifier);

  return $identifier;
}