don't deduplicate autocomplete keys

autocomplete/autocomplete.go

@@ -20,13 +20,9 @@ type Set[V any] struct {
 // The behavior is undefined if the key already has a value.
 func (s *Set[V]) Add(key string, val V) {
 	k := util.ToChars([]byte(key))
-	i, ok := slices.BinarySearchFunc(s.keys, k, func(a, b util.Chars) int {
+	i, _ := slices.BinarySearchFunc(s.keys, k, func(a, b util.Chars) int {
 		return bytes.Compare(a.Bytes(), b.Bytes())
 	})
-	if ok {
-		s.vals[i] = val
-		return
-	}
 	s.keys = slices.Insert(s.keys, i, k)
 	s.vals = slices.Insert(s.vals, i, val)
 }