Ticket #23431: 23431.diff

wp-includes/shortcodes.php

@@ -232 +232 @@
         $attr = shortcode_parse_atts( $m[3] );
 
         if ( isset( $m[5] ) ) {
+                // see docs for WP_Embed::run_shortcode()
+                if ( $tag == 'embed' && $shortcode_tags[$tag] == '__return_false' )
+                        return $GLOBALS['wp_embed']->run_shortcode( $m[0] );
                 // enclosing tag - extra parameter
                 return $m[1] . call_user_func( $shortcode_tags[$tag], $attr, $m[5], $tag ) . $m[6];
         } else {