Ticket #27601: 27601.diff

wp-includes/class-wp-editor.php

@@ -80 +80 @@
                 ) );
 
                 self::$this_tinymce = ( $set['tinymce'] && user_can_richedit() );
+                if ( self::$this_tinymce ) {
+                        if ( false !== strpos( $editor_id, '[' ) ) {
+                                self::$this_tinymce = false;
+                                _deprecated_argument( __METHOD__, 'TinyMCE editor IDs cannot have brackets.', '3.9' );
+                        }
+                }
                 self::$this_quicktags = (bool) $set['quicktags'];
 
                 if ( self::$this_tinymce )