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

ckeditor5_enable in core/modules/ckeditor5/ckeditor5.install
Implements hook_enable().
comment_enable in core/modules/comment/comment.install
Implements hook_enable().
field_ui_view_mode_enable in core/modules/field_ui/
Menu callback: Enables the manage displays UI for a display mode.
file_type_toggle_enable in core/modules/file/
Menu callback; disable or enable a single file type.
filter_admin_enable in core/modules/filter/
Page callback: Enable a text format.
filter_format_enable in core/modules/filter/filter.module
Enables a text format.
image_example_enable in modules/examples/image_example/image_example.install
Implements hook_enable().
layout_enable in core/modules/layout/layout.install
Implements hook_enable().
layout_test_layout_enable in core/modules/layout/tests/layout_test/layout_test.module
Implements hook_layout_enable().
locale_enable in core/modules/locale/locale.install
Fill in the path prefixes and domains when enabled.
menu_enable in core/modules/menu/menu.module
Implements hook_enable().
module_enable in core/includes/
Enables or installs a given list of modules.
module_test_enable in core/modules/simpletest/tests/module_test.install
Implements hook_enable().
system_theme_enable in core/modules/system/
Menu callback; Enables a theme.
theme_enable in core/includes/
Enables a given list of themes.
update_module_enable in core/includes/
Helper function to install a new module in Backdrop 1.x via hook_update_N().
update_upgrade_modules_to_enable in core/includes/
Finds out which modules need to be enabled.