6 uses of USERNAME_MAX_LENGTH in Drupal 5

user_admin_check_user in modules/user/user.module

user_edit_form in modules/user/user.module

user_login in modules/user/user.module

user_login_block in modules/user/user.module

user_pass in modules/user/user.module

user_validate_name in modules/user/user.module

Verify the syntax of the given name.