837 pub struct ClassUnicode {  struct
838     set: IntervalSet<ClassUnicodeRange>,  argument
841 impl ClassUnicode {  implementation
919     pub fn union(&mut self, other: &ClassUnicode) {  in union()
925     pub fn intersect(&mut self, other: &ClassUnicode) {  in intersect()
930     pub fn difference(&mut self, other: &ClassUnicode) {  in difference()
942     pub fn symmetric_difference(&mut self, other: &ClassUnicode) {  in symmetric_difference()
1528     fn uclass(ranges: &[(char, char)]) -> ClassUnicode {  in uclass()  argument
1547     fn ucasefold(cls: &ClassUnicode) -> ClassUnicode {  in ucasefold()
1553     fn uunion(cls1: &ClassUnicode, cls2: &ClassUnicode) -> ClassUnicode {  in uunion()
1559     fn uintersect(cls1: &ClassUnicode, cls2: &ClassUnicode) -> ClassUnicode {  in uintersect()
1565     fn udifference(cls1: &ClassUnicode, cls2: &ClassUnicode) -> ClassUnicode {  in udifference()
1572         cls1: &ClassUnicode,  in usymdifference()
1573         cls2: &ClassUnicode,  in usymdifference()
1574     ) -> ClassUnicode {  in usymdifference()
1580     fn unegate(cls: &ClassUnicode) -> ClassUnicode {  in unegate()