views_handler_filter_combine::options_form in core/modules/views/handlers/views_handler_filter_combine.inc

Provide the basic form which calls through to subforms. If overridden, it is best to call through to the parent, or to at least make sure all of the functions in this form are called.

views_handler_filter_fields_compare::options_form in core/modules/views/handlers/views_handler_filter_fields_compare.inc

Overrides views_handler_filter#options_form().

views_handler_filter_search::options_form in core/modules/search/views/views_handler_filter_search.inc

Overrides views_handler_filter::options_form().