Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.

aggregator_form_aggregator_admin_form_alter in modules/aggregator/aggregator.processor.inc
Implements hook_form_aggregator_admin_form_alter().
block_form_form_test_alter_form_alter in modules/simpletest/tests/form_test.module
Implements hook_form_FORM_ID_alter() on behalf of block.module.
block_form_user_profile_form_alter in modules/block/block.module
Implements hook_form_FORM_ID_alter() for user_profile_form().
book_form_node_form_alter in modules/book/book.module
Implements hook_form_BASE_FORM_ID_alter() for node_form().
comment_form_node_form_alter in modules/comment/comment.module
Implements hook_form_BASE_FORM_ID_alter().
comment_form_node_type_form_alter in modules/comment/comment.module
Implements hook_form_FORM_ID_alter().
contact_form_user_profile_form_alter in modules/contact/contact.module
Implements hook_form_FORM_ID_alter().
dashboard_form_block_add_block_form_alter in modules/dashboard/dashboard.module
Implements hook_form_FORM_ID_alter().
dashboard_form_block_admin_display_form_alter in modules/dashboard/dashboard.module
Implements hook_form_FORM_ID_alter().
dashboard_form_dashboard_admin_display_form_alter in modules/dashboard/dashboard.module
Implements hook_form_FORM_ID_alter().
example_form_alter in developer/example.profile
Implementation of hook_form_alter().
field_test_field_widget_form_alter in modules/field/tests/field_test.module
Implements hook_field_widget_form_alter().
field_ui_form_node_type_form_alter in modules/field_ui/field_ui.module
Implements hook_form_FORM_ID_alter().
form_test_form_alter in modules/simpletest/tests/form_test.module
Implements hook_form_alter().
form_test_form_form_test_alter_form_alter in modules/simpletest/tests/form_test.module
Implements hook_form_FORM_ID_alter().
form_test_form_user_register_form_alter in modules/simpletest/tests/form_test.module
Implements hook_form_FORM_ID_alter() for the registration form.
forum_form_node_form_alter in modules/forum/forum.module
Implements hook_form_BASE_FORM_ID_alter() for node_form().
locale_form_alter in modules/locale/locale.module
Implements hook_form_alter().
locale_form_comment_form_alter in modules/locale/locale.module
Implements hook_form_FORM_ID_alter().
locale_form_node_form_alter in modules/locale/locale.module
Implements hook_form_BASE_FORM_ID_alter().
locale_form_node_type_form_alter in modules/locale/locale.module
Implements hook_form_FORM_ID_alter().
locale_form_path_admin_form_alter in modules/locale/locale.module
Implements hook_form_FORM_ID_alter().
menu_form_node_form_alter in modules/menu/menu.module
Implements hook_form_BASE_FORM_ID_alter().
menu_form_node_type_form_alter in modules/menu/menu.module
Implements hook_form_FORM_ID_alter().
minimal_form_install_configure_form_alter in profiles/minimal/minimal.profile
Implements hook_form_FORM_ID_alter() for install_configure_form().
node_access_test_form_node_form_alter in modules/node/tests/node_access_test.module
Implements hook_form_BASE_FORM_ID_alter().
node_form_block_add_block_form_alter in modules/node/node.module
Implements hook_form_FORMID_alter().
node_form_search_form_alter in modules/node/node.module
Implements hook_form_FORM_ID_alter().
openid_form_user_register_form_alter in modules/openid/openid.module
Implements hook_form_FORM_ID_alter().
overlay_form_alter in modules/overlay/overlay.module
Implements hook_form_alter().
overlay_form_user_profile_form_alter in modules/overlay/overlay.module
Implements hook_form_FORM_ID_alter().
path_form_node_form_alter in modules/path/path.module
Implements hook_form_BASE_FORM_ID_alter() for node_form().
profile_form_alter in modules/profile/profile.module
Implements hook_form_alter().
standard_form_install_configure_form_alter in profiles/standard/standard.profile
Implements hook_form_FORM_ID_alter() for install_configure_form().
system_form_form_test_alter_form_alter in modules/simpletest/tests/form_test.module
Implements hook_form_FORM_ID_alter() on behalf of system.module.
system_form_user_profile_form_alter in modules/system/system.module
Implements hook_form_FORM_ID_alter().
system_form_user_register_form_alter in modules/system/system.module
Implements hook_form_FORM_ID_alter().
taxonomy_test_form_alter in modules/simpletest/tests/taxonomy_test.module
Implements hook_form_alter().
translation_form_node_form_alter in modules/translation/translation.module
Implements hook_form_BASE_FORM_ID_alter() for node_form().
translation_form_node_type_form_alter in modules/translation/translation.module
Implements hook_form_FORM_ID_alter() for node_type_form().
user_form_field_ui_field_edit_form_alter in modules/user/user.module
Implements hook_form_FORM_ID_alter().
user_form_test_form_user_profile_form_alter in modules/user/tests/user_form_test.module
Implements hook_form_FORM_ID_alter().