Ticket #19278: 19278.diff

src/wp-admin/includes/class-wp-list-table.php

@@ -463 +463 @@
                 echo '<select name="action' . $two . '" id="bulk-action-selector-' . esc_attr( $which ) . "\">\n";
                 echo '<option value="-1">' . __( 'Bulk Actions' ) . "</option>\n";
 
-                foreach ( $this->_actions as $name => $title ) {
-                        $class = 'edit' === $name ? ' class="hide-if-no-js"' : '';
+                foreach ( $this->_actions as $key => $value ) {
+                        if ( is_array( $value ) ) {
+                                echo "\t" . '<optgroup label="' . $key . "\">\n";
+                                foreach ( $value as $name => $title ) {
+                                        $class = 'edit' === $name ? ' class="hide-if-no-js"' : '';
 
-                        echo "\t" . '<option value="' . $name . '"' . $class . '>' . $title . "</option>\n";
+                                        echo "\t\t" . '<option value="' . $name . '"' . $class . '>' . $title . "</option>\n";
+                                }
+                                echo "\t" . "</optgroup>\n";
+                        } else {
+                                $class = 'edit' === $key ? ' class="hide-if-no-js"' : '';
+
+                                echo "\t" . '<option value="' . $key . '"' . $class . '>' . $value . "</option>\n";
+                        }
                 }
 
                 echo "</select>\n";