- comment_form_validate in core/
modules/ comment/ comment.module - Form validation handler for comment_form().
- field_test_entity_form_validate in core/
modules/ field/ tests/ field_test/ field_test.entity.inc - Validate handler for field_test_entity_form().
- file_manage_form_validate in core/
modules/ file/ file.pages.inc - Form validation handler for file_manage_form().
- node_form_validate in core/
modules/ node/ node.pages.inc - Form validation handler for node_form().
- taxonomy_form_term_validate in core/
modules/ taxonomy/ taxonomy.admin.inc - Validation handler for the term form.
- user_profile_form_validate in core/
modules/ user/ user.pages.inc - Form validation handler for user_profile_form().
- user_register_validate in core/
modules/ user/ user.module - Validation function for the user registration form.