fixed keyboard formula entry for subtraction

HISTORY.md

@@ -2,8 +2,12 @@
 
 ## in development:
 
+* **Notable Fixes:**
+    * fixed keyboard formula entry for subtraction
+
 ### 2020-12-14
 * new dev version
+* fixed keyboard formula entry for subtraction
 
 ## 6.4.1
 * **Documentation Updates:**

snap.html

@@ -10,7 +10,7 @@
         <script src="src/widgets.js?version=2020-10-06"></script>
         <script src="src/blocks.js?version=2020-12-11"></script>
         <script src="src/threads.js?version=2020-12-09"></script>
-        <script src="src/objects.js?version=2020-12-09"></script>
+        <script src="src/objects.js?version=2020-12-15"></script>
         <script src="src/gui.js?version=2020-12-15"></script>
         <script src="src/paint.js?version=2020-05-17"></script>
         <script src="src/lists.js?version=2020-12-01"></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-December-09';
+modules.objects = '2020-December-15';
 
 var SpriteMorph;
 var StageMorph;
@@ -3478,8 +3478,7 @@ SpriteMorph.prototype.reporterize = function (expressionString) {
             'not'];
         alias = {
             ceil: 'ceiling',
-            '!' : 'not',
-            '-' : 'neg'
+            '!' : 'not'
         };
         monads.concat(['true', 'false']).forEach(word =>
             reverseDict[localize(word).toLowerCase()] = word