def internal_fin_tail
import bend-mathlib@0.8.1.0/string.bend as Stringimport Base
268def internal_fin_tail(ab: Bool, bb: Bool, c: Cmp, h: {Cmp.is_eq(Word.cmp.fin(ab, bb, c)) == True{} : Bool}) -> {Cmp.is_eq(c) == True{} : Bool}:
269 match c:
270 case LT{}:
271 Empty.absurd({Cmp.is_eq(LT{}) == True{} : Bool}, internal_false_ne_true(h))
272 case EQ{}:
273 {==}
274 case GT{}:
275 Empty.absurd({Cmp.is_eq(GT{}) == True{} : Bool}, internal_false_ne_true(h))