6 calls to user_is_anonymous()

comment_form_submit in modules/comment/comment.module
Process comment form submissions; prepare the comment, store it, and set a redirection target.
hook_menu_site_status_alter in modules/system/system.api.php
Control site status before menu dispatching.
openid_menu_site_status_alter in modules/openid/openid.module
Implements hook_menu_site_status_alter().
openid_test_menu_site_status_alter in modules/openid/tests/openid_test.module
Implements hook_menu_site_status_alter().
user_menu_site_status_alter in modules/user/user.module
Implements hook_menu_site_status_alter().
user_register_access in modules/user/user.module
Determines if the current user has access to the user registration page.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.