Interactive Editing Working

data Vect : Nat -> Type -> Type where
     Nil : Vect Z a
     (::) : a -> Vect k a -> Vect (S k) a

append : Vect n a -> Vect m a -> Vect (n + m) a
append {n = Z} [] ys = ?foo_1
append {n = (S k)} (x :: xs) ys = ?foo_2

vadd : Num a => Vect n a -> Vect n a -> Vect n a
vadd [] [] = ?bar_1
vadd (x :: xs) (y :: ys) = ?baz_1

suc : (x : Nat) -> (y : Nat) -> x = y -> S x = S y
suc x x Refl = ?quux_1

suc' : x = y -> S x = S y
suc' {x = y} {y = y} Refl = ?quuz_1