diff --git a/pure.spl b/pure.spl
index e286e40..f0e429f 100644
--- a/pure.spl
+++ b/pure.spl
@@ -31,7 +31,7 @@ func or { a||b | with a b ;
 func alit-end { array | with type ;
     def array 0 anew =array
     while { dup type eq not } {
-        0 1 anew dup:set; array aadd =array
+        awrap array aadd =array
     }
     pop array
 }
@@ -41,8 +41,9 @@ func read-file { str | with path ;
     1024 stream:read-to-end:to-str
 }
 
-func acopy { | with from to idxsrc idxdst len ;
+func acopy { array | with from to idxsrc idxdst len ;
     len:foreach<{ | with i ;
         i idxsrc + from:get i idxdst + to:set;
     }>
+    to
 }
diff --git a/std.spl b/std.spl
index 2d2345c..faa9d6e 100644
--- a/std.spl
+++ b/std.spl
@@ -478,6 +478,10 @@ func assert-eq { any any | with a b ;
     a b
 }
 
+func awrap { array | with item ; 
+    item 1 anew =item 0 item:set; item
+}
+
 func [ { shadow |
     "array" "shadow" settype
 }