disabled empty-slot implicit parameter in FOREACH

HISTORY.md

@@ -2,6 +2,8 @@
 
 ## in development:
 
+* **Notable Changes:**
+    * disabled empty-slot implicit parameter in FOREACH
 * **Notable Fixes:**
     * fixed "transpose" in the APL library, thanks, Brian!
 * **Translation Updates:**
@@ -11,6 +13,7 @@
 * new dev version
 * Catalan translation update, thanks, Joan!
 * lists, apl: fixed "transpose", thanks, Brian!
+* threads: disabled empty-slot implicit parameter in FOREACH
 
 ## 6.7.1
 * **Notable Fixes:**

snap.html

@@ -9,7 +9,7 @@
         <script src="src/symbols.js?version=2021-03-03"></script>
         <script src="src/widgets.js?version=2021-01-05"></script>
         <script src="src/blocks.js?version=2021-02-27"></script>
-        <script src="src/threads.js?version=2021-03-02"></script>
+        <script src="src/threads.js?version=2021-03-15"></script>
         <script src="src/objects.js?version=2021-03-09"></script>
         <script src="src/gui.js?version=2021-03-15"></script>
         <script src="src/paint.js?version=2020-05-17"></script>

src/threads.js

@@ -61,7 +61,7 @@ StageMorph, SpriteMorph, StagePrompterMorph, Note, modules, isString, copy, Map,
 isNil, WatcherMorph, List, ListWatcherMorph, alert, console, TableMorph, BLACK,
 TableFrameMorph, ColorSlotMorph, isSnapObject, newCanvas, Symbol, SVG_Costume*/
 
-modules.threads = '2021-March-02';
+modules.threads = '2021-March-15';
 
 var ThreadManager;
 var Process;
@@ -2610,7 +2610,7 @@ Process.prototype.doForEach = function (upvar, list, script) {
     this.pushContext();
     this.context.outerContext.variables.addVar(upvar);
     this.context.outerContext.variables.setVar(upvar, next);
-    this.evaluate(script, new List([next]), true);
+    this.evaluate(script, new List(/*[next]*/), true);
 };
 
 Process.prototype.doFor = function (upvar, start, end, script) {