refactored input slot specs

HISTORY.md

@@ -2,6 +2,9 @@
 
 ## in development:
 
+### 2020-11-26
+* blocks, objects: refactored input slot specs
+
 ### 2020-11-23
 * new dev version
 

snap.html

@@ -8,9 +8,9 @@
         <script src="src/morphic.js?version=2020-11-12"></script>
         <script src="src/symbols.js?version=2020-10-07"></script>
         <script src="src/widgets.js?version=2020-10-06"></script>
-        <script src="src/blocks.js?version=2020-11-21"></script>
+        <script src="src/blocks.js?version=2020-11-26"></script>
         <script src="src/threads.js?version=2020-11-22"></script>
-        <script src="src/objects.js?version=2020-11-22"></script>
+        <script src="src/objects.js?version=2020-11-26"></script>
         <script src="src/gui.js?version=2020-11-23"></script>
         <script src="src/paint.js?version=2020-05-17"></script>
         <script src="src/lists.js?version=2020-07-01"></script>

src/objects.js

@@ -84,7 +84,7 @@ BlockEditorMorph, BlockDialogMorph, PrototypeHatBlockMorph,  BooleanSlotMorph,
 localize, TableMorph, TableFrameMorph, normalizeCanvas, VectorPaintEditorMorph,
 AlignmentMorph, Process, WorldMap, copyCanvas, useBlurredShadows*/
 
-modules.objects = '2020-November-22';
+modules.objects = '2020-November-26';
 
 var SpriteMorph;
 var StageMorph;
@@ -1146,6 +1146,7 @@ SpriteMorph.prototype.initBlocks = function () {
             type: 'predicate',
             category: 'operators',
             spec: '%bool',
+            defaults: [true],
             alias: 'true boolean'
         },
         reportFalse: { // special case for keyboard entry and search