Ticket #23307: 23307.4.diff

src/wp-includes/shortcodes.php

@@ -443 +443 @@
  * @since 2.5.0
  *
  * @param string $text
- * @return array List of attributes and their value.
+ * @return array|string List of attribute values. Returns empty array if trim( $text ) == '""'. Returns empty string if trim( $text ) == ''.  All other situations are not empty().
  */
 function shortcode_parse_atts($text) {
         $atts = array();