pub unsafe extern "C" fn pango_attr_list_filter(
list: *mut PangoAttrList,
func: PangoAttrFilterFunc,
data: gpointer,
) -> *mut PangoAttrListpub unsafe extern "C" fn pango_attr_list_filter(
list: *mut PangoAttrList,
func: PangoAttrFilterFunc,
data: gpointer,
) -> *mut PangoAttrList