fixed an off-by-one error in List >> becomeLinked()

HISTORY.md

@@ -3,6 +3,7 @@
 ## in development
 ### 2019-01-08
 * Objects: automatically parse csv files on import, experimental "raw data" and "parse" ops
+* Lists: fixed an off-by-one error in becomeLinked()
 
 ### 2019-01-07
 * Lists, Objects: directly export and import lists as csv files, under construction

snap.html

@@ -11,7 +11,7 @@
         <script type="text/javascript" src="src/objects.js?version=2019-01-08"></script>
         <script type="text/javascript" src="src/gui.js?version=2019-01-02"></script>
         <script type="text/javascript" src="src/paint.js?version=2018-10-02"></script>
-        <script type="text/javascript" src="src/lists.js?version=2019-01-07"></script>
+        <script type="text/javascript" src="src/lists.js?version=2019-01-08"></script>
         <script type="text/javascript" src="src/byob.js?version=2018-11-12"></script>
         <script type="text/javascript" src="src/tables.js?version=2018-10-02"></script>
         <script type="text/javascript" src="src/symbols.js?version=2018-10-02"></script>

src/lists.js

@@ -62,7 +62,7 @@ CellMorph, ArrowMorph, MenuMorph, snapEquals, Morph, isNil, localize, isString,
 MorphicPreferences, TableDialogMorph, SpriteBubbleMorph, SpeechBubbleMorph,
 TableFrameMorph, TableMorph, Variable, isSnapObject*/
 
-modules.lists = '2019-January-07';
+modules.lists = '2019-January-08';
 
 var List;
 var ListWatcherMorph;
@@ -390,7 +390,7 @@ List.prototype.becomeLinked = function () {
         stop = this.length();
         for (i = 0; i < stop; i += 1) {
             tail.first = this.contents[i];
-            if (i < (stop - 1)) {
+            if (i < stop) {
                 tail.rest = new List();
                 tail.isLinked = true;
                 tail = tail.rest;