From 5ea2a0af9c09635533464b2d1cb99a92f757fb9f Mon Sep 17 00:00:00 2001
From: jmoenig <jens@moenig.org>
Date: Tue, 1 Dec 2020 13:41:37 +0100
Subject: [PATCH] made sure map() doesn't mutate internal list linked-ness

---
 HISTORY.md   | 1 +
 snap.html    | 2 +-
 src/lists.js | 4 ++--
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/HISTORY.md b/HISTORY.md
index 85a8f313..45a1ca18 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -24,6 +24,7 @@
 * blocks: made pen attributes menus static
 * blocks: made sensing attributes menus largely static
 * threads: changed reportVideo() to be hyper-monadic
+* lists: made sure map() doesn't mutate internal list linked-ness
 
 ### 2020-11-30
 * threads: keep internal linked-list organization intact for hyperblocks
diff --git a/snap.html b/snap.html
index 3d57e7df..244bc49a 100755
--- a/snap.html
+++ b/snap.html
@@ -13,7 +13,7 @@
         <script src="src/objects.js?version=2020-12-01"></script>
         <script src="src/gui.js?version=2020-12-01"></script>
         <script src="src/paint.js?version=2020-05-17"></script>
-        <script src="src/lists.js?version=2020-07-01"></script>
+        <script src="src/lists.js?version=2020-12-01"></script>
         <script src="src/byob.js?version=2020-11-27"></script>
         <script src="src/tables.js?version=2020-10-06"></script>
         <script src="src/sketch.js?version=2020-07-13"></script>
diff --git a/src/lists.js b/src/lists.js
index 07e314e2..9ca55cd2 100644
--- a/src/lists.js
+++ b/src/lists.js
@@ -63,7 +63,7 @@ MorphicPreferences, TableDialogMorph, SpriteBubbleMorph, SpeechBubbleMorph,
 TableFrameMorph, TableMorph, Variable, isSnapObject, Costume, contains, detect,
 ZERO, WHITE*/
 
-modules.lists = '2020-July-01';
+modules.lists = '2020-December-01';
 
 var List;
 var ListWatcherMorph;
@@ -211,7 +211,7 @@ List.prototype.clear = function () {
 
 List.prototype.map = function(callback) {
     return new List(
-        this.asArray().map(callback)
+        this.itemsArray().map(callback)
     );
 };