refactored toggling APL-scalars support on and off

src/gui.js

@@ -78,7 +78,7 @@ Animation, BoxMorph, BlockEditorMorph, BlockDialogMorph, Note*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2020-June-22';
+modules.gui = '2020-June-24';
 
 // Declarations
 
@@ -3440,21 +3440,7 @@ IDE_Morph.prototype.settingsMenu = function () {
     if (Process.prototype.enableHyperOps) {
         addPreference(
             'APL-style scalars',
-            () => {
-                Process.prototype.enableAPLscalars =
-                    !Process.prototype.enableAPLscalars;
-                if (Process.prototype.enableAPLscalars) {
-                    Process.prototype.hyperDyadic =
-                        Process.prototype.hyperDyadicAPL;
-                    Process.prototype.hyperZip =
-                        Process.prototype.hyperZipAPL;
-                } else {
-                    Process.prototype.hyperDyadic =
-                        Process.prototype.hyperDyadicSimple;
-                    Process.prototype.hyperZip =
-                        Process.prototype.hyperZipSimple;
-                }
-            },
+            () => Process.prototype.toggleAPLscalars(),
             Process.prototype.enableAPLscalars,
             'uncheck to disable treating (nested)\n' +
                 'single-item lists as scalars',

src/threads.js

@@ -61,7 +61,7 @@ StageMorph, SpriteMorph, StagePrompterMorph, Note, modules, isString, copy, Map,
 isNil, WatcherMorph, List, ListWatcherMorph, alert, console, TableMorph, Color,
 TableFrameMorph, ColorSlotMorph, isSnapObject, newCanvas, Symbol, SVG_Costume*/
 
-modules.threads = '2020-June-22';
+modules.threads = '2020-June-24';
 
 var ThreadManager;
 var Process;
@@ -3735,6 +3735,23 @@ Process.prototype.examine = function (data) {
     return meta;
 };
 
+Process.prototype.toggleAPLscalars = function () {
+/*
+    very experimental. I don't like it and mark this feature for
+    removal. treating (even deep) single-item lists as scalars
+    must be a misfeature in APL introduced for convenience or to
+    work around some obvious design flaw. -jens
+*/
+    Process.prototype.enableAPLscalars = !Process.prototype.enableAPLscalars;
+    if (Process.prototype.enableAPLscalars) {
+        Process.prototype.hyperDyadic = Process.prototype.hyperDyadicAPL;
+        Process.prototype.hyperZip = Process.prototype.hyperZipAPL;
+    } else {
+        Process.prototype.hyperDyadic = Process.prototype.hyperDyadicSimple;
+        Process.prototype.hyperZip = Process.prototype.hyperZipSimple;
+    }
+};
+
 // Process math primtives - arithmetic
 
 Process.prototype.reportSum = function (a, b) {