function _unicode_caseflip

7.x unicode.inc	`_unicode_caseflip($matches)`
6.x unicode.inc	`_unicode_caseflip($matches)`

Helper function for case conversion of Latin-1. Used for flipping U+C0-U+DE to U+E0-U+FD and back.

2 string references to '_unicode_caseflip'

drupal_strtolower in drupal-6.x/includes/unicode.inc: Lowercase a UTF-8 string.
drupal_strtoupper in drupal-6.x/includes/unicode.inc: Uppercase a UTF-8 string.

function _unicode_caseflip($matches) {
  return $matches[0][0] . chr(ord($matches[0][1]) ^ 32);
}