5 string references to 'user_login'

TriggerOtherTestCase::testActionsUser in drupal/modules/trigger/trigger.test
Tests triggering on user create and user login.
TriggerUserTokenTestCase::testUserTriggerTokenReplacement in drupal/modules/trigger/trigger.test
Tests a variety of token replacements in actions.
trigger_test_action_info in drupal/modules/trigger/tests/trigger_test.module
Implements hook_action_info().
trigger_user_login in drupal/modules/trigger/trigger.module
Implements hook_user_login().
user_page in drupal/modules/user/user.pages.inc
Page callback: Displays the user page.