LinkValidateUnitTest::testValidateExternalLinks in core/modules/link/tests/link.validate.test

link_cleanup_url in core/modules/link/link.module

Forms a valid URL if possible from an entered address.

link_field_instance_settings_form in core/modules/link/link.module

Implements hook_field_instance_settings_form().

link_field_process in core/modules/link/link.module

Processes the link type element before displaying the field.

link_validate_url in core/modules/link/link.module

Validates a URL.

_link_sanitize in core/modules/link/link.module

Clean up user-entered values for a link field according to field settings.

_link_validate in core/modules/link/link.module

Validates that the link field has been entered properly.