--- a/array.c	Tue Feb 28 20:57:48 2012 +0100
+++ b/array.c	Tue Feb 28 21:15:08 2012 +0100
@@ -51,7 +51,7 @@
  * l -> optional array block size of type int
  * m -> malloc function that must matches void * (*malloc)(size_t)
  * r -> realloc function that must matches void * (*realloc)(void *, size_t)
- * t -> type of array of type enum array_type
+ * t -> type of array of type int
  */
 
 void
@@ -106,9 +106,12 @@
 int
 array_insert(struct array *arr, const void *data, int index)
 {
-	if (index > arr->length - 1 || index < 0 || array_grow(arr) < 0)
-		return -1;
+	if (index < 0)
+		return array_push(arr, data);
+	if (index >= arr->length)
+		return array_append(arr, data);
 
+	/* Good place */
 	memmove((char *)arr->data + OFFSET(index + 1),
 	    (char *)arr->data + OFFSET(index), OFFSET(arr->length++ - index));
 	memcpy((char *)arr->data + OFFSET(index), data, arr->unit);