Ticket #26927: 26927.patch

src/wp-includes/shortcodes.php

@@ -289 +289 @@
  * The attributes list has the attribute name as the key and the value of the
  * attribute as the value in the key/value pair. This allows for easier
  * retrieval of the attributes, since all attributes have to be known.
+ * Attributes not in key=value notation will be added to the list with a numerical key.
+ * If no attributes are passed in the shortcode, an empty string will be returned.
  *
  * @since 2.5.0
  *
  * @param string $text
- * @return array List of attributes and their value.
+ * @return array|string Array of attributes and their values, empty string if no attributes were passed.
  */
 function shortcode_parse_atts($text) {
         $atts = array();
@@ -307 +309 @@
                                 $atts[strtolower($m[3])] = stripcslashes($m[4]);
                         elseif (!empty($m[5]))
                                 $atts[strtolower($m[5])] = stripcslashes($m[6]);
-                        elseif (isset($m[7]) and strlen($m[7]))
+                        elseif (isset($m[7]) && strlen($m[7]))
                                 $atts[] = stripcslashes($m[7]);
                         elseif (isset($m[8]))
                                 $atts[] = stripcslashes($m[8]);