Issue #1788084 by andyceo, dawehner: Convert actions variable(s) to CMI - add upgrade path.

core/modules/system/lib/Drupal/system/Tests/Upgrade/SystemUpgradePathTest.php

@@ -89,6 +89,10 @@ class SystemUpgradePathTest extends UpgradePathTestBase {
       'fallback_format' => 'plain_text'
     );
 
+    $expected_config['action.settings'] = array(
+      'recursion_limit' => 42,
+    );
+
     foreach ($expected_config as $file => $values) {
       $config = config($file);
       $this->verbose(print_r($config->get(), TRUE));

core/modules/system/system.install

@@ -2308,6 +2308,17 @@ function system_update_8039() {
   update_variables_to_config('system.performance', $variable_map);
 }
 
+/**
+ * Moves action_max_stack from variable to config.
+ *
+ * @ingroup config_upgrade
+ */
+function system_update_8040() {
+  update_variables_to_config('action.settings', array(
+    'actions_max_stack' => 'recursion_limit',
+  ));
+}
+
 /**
  * @} End of "defgroup updates-7.x-to-8.x".
  * The next series of updates should start at 9000.

core/modules/system/tests/upgrade/drupal-7.system.database.php

@@ -103,6 +103,10 @@ db_insert('variable')->fields(array(
     'name' => 'password_count_log2',
     'value' => 'i:42;',
 ))
+->values(array(
+    'name' => 'actions_max_stack',
+    'value' => 'i:42;',
+  ))
 ->execute();
 
 db_update('variable')