Name Type Location Description
system_system_info_alter function core/modules/system/system.module Implements hook_system_info_alter().
email_example_mail_alter function modules/examples/email_example/email_example.module Implements hook_mail_alter().
taxonomy_test_form_alter function core/modules/simpletest/tests/taxonomy_test.module Implements hook_form_alter().
hook_update_status_alter function core/modules/update/update.api.php Alter the information about available updates for projects.
_node_search_query_alter function core/modules/node/node.module Exclude nodes from the search query in the special situations.
hook_ckeditor5_css_alter function core/modules/ckeditor5/ckeditor5.api.php Modify the list of CSS files that will be added to a CKEditor 5 instance.
locale_entity_info_alter function core/modules/locale/locale.module Implements hook_entity_info_alter().
file_test_file_url_alter function core/modules/simpletest/tests/file_test.module Implements hook_file_url_alter().
hook_views_plugins_alter function core/modules/views/views.api.php Alter existing plugins data, defined by modules.
NodeQueryAlter::$profile property core/modules/node/tests/node.test The profile to install as a basis for testing.
FieldSchemaAlterTestCase class core/modules/field/tests/field.test Tests that the field schema can be altered with hook_field_schema_alter().
hook_menu_get_item_alter function core/modules/system/system.api.php Alter a menu router item right after it has been retrieved from the database or cache.
comment_views_data_alter function core/modules/comment/views/comment.views.inc Use views_data_alter to add items to the node table that are relevant to comments.
hook_field_display_alter function core/modules/field/field.api.php Alters the display settings of a field before it gets displayed.
contact_views_data_alter function core/modules/contact/views/contact.views.inc Implements hook_views_data_alter().
color_url_outbound_alter function core/modules/color/color.module Implements hook_url_outbound_alter().
FormAlterTestCase::setUp function core/modules/simpletest/tests/form.test Sets up a Backdrop site for running functional and integration tests.
ThemeUnitTest::testAlter function core/modules/simpletest/tests/theme.test Ensures theme hook_*_alter() implementations can run before anything is rendered.
hook_backdrop_goto_alter function core/modules/system/system.api.php Change the page the user is sent to by backdrop_goto().
hook_install_tasks_alter function core/modules/system/system.api.php Alter the full list of installation tasks.
hook_archiver_info_alter function core/modules/system/system.api.php Alter archiver information declared by other modules.
hook_autoload_info_alter function core/modules/system/system.api.php Perform alterations to the list of classes included in the registry.
hook_telemetry_info_alter function core/modules/telemetry/telemetry.api.php Alter the list of data collected by Telemetry.
hook_telemetry_data_alter function core/modules/telemetry/telemetry.api.php Alter the complete list of values collected by Telemetry before sending.
NodeEntityFieldQueryAlter class core/modules/node/tests/node.test Tests node_query_entity_field_access_alter().
book_form_node_form_alter function core/modules/book/book.module Implements hook_form_BASE_FORM_ID_alter().
views_plugin_query::alter function core/modules/views/plugins/views_plugin_query.inc Let modules modify the query just prior to finalizing it.
locale_library_info_alter function core/modules/locale/locale.module Implement hook_library_info_alter().
locale_url_outbound_alter function core/modules/locale/locale.module Implements hook_url_outbound_alter().
hook_field_language_alter function core/modules/field/field.api.php Perform alterations on field_language() values.
taxonomy_test_query_alter function core/modules/simpletest/tests/taxonomy_test.module Implements hook_query_alter().
hook_theme_registry_alter function core/modules/system/system.api.php Alter the theme registry information returned from hook_theme().
icon_test_icon_info_alter function core/modules/simpletest/tests/icon_test/icon_test.module Implements hook_icon_info_alter().
database_test_query_alter function core/modules/simpletest/tests/database_test.module Implements hook_query_alter().
system_library_info_alter function core/modules/system/system.module Implements hook_library_info_alter().
taxonomy_views_data_alter function core/modules/taxonomy/views/taxonomy.views.inc Implements hook_views_data_alter().
menu_form_node_form_alter function core/modules/menu/menu.module Implements hook_form_BASE_FORM_ID_alter().
path_form_node_form_alter function core/modules/path/path.module Implements hook_form_BASE_FORM_ID_alter() for node_form().
field_field_display_alter function core/modules/field/field.module Implements hook_field_display_alter().
hook_update_projects_alter function core/modules/update/update.api.php Alter the list of projects before fetching data and comparing versions.
redirect_url_inbound_alter function core/modules/redirect/redirect.module Implements hook_url_inbound_alter().
hook_views_ajax_data_alter function core/modules/views/views.api.php This hook allows to alter the commands which are used on a views ajax request.
hook_cron_queue_info_alter function core/modules/system/system.api.php Alter cron queue information before cron runs.
TaxonomyQueryAlterTestCase class core/modules/taxonomy/tests/taxonomy.test Tests that appropriate query tags are added.
hook_menu_breadcrumb_alter function core/modules/system/system.api.php Alter links in the active trail before it is rendered as the breadcrumb.
hook_stream_wrappers_alter function core/modules/system/system.api.php Alters the list of PHP stream wrapper implementations.
EntityFieldQuery::$altered property core/modules/entity/entity.query.inc TRUE if the query has already been altered, FALSE if it hasn't.
file_stream_wrappers_alter function core/modules/file/file.module Implements hook_stream_wrappers_alter().
LocaleLibraryInfoAlterTest class core/modules/locale/tests/locale.test Tests localization of the JavaScript libraries.
FieldUIAlterTestCase::setUp function core/modules/field_ui/tests/field_ui.test Sets up a Backdrop site for running functional and integration tests.

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