blank-out variable getters in syntax-tree result list

HISTORY.md

@@ -14,6 +14,7 @@
 
 ### 2022-01-07
 * blocks: added syntax tree representation for variable getters
+* blocks, byob: blank-out variable getters in syntax-tree result list
 
 ### 2022-01-06
 * Catalan library translations, thanks, Joan!

snap.html

@@ -23,7 +23,7 @@
         <script src="src/gui.js?version=2022-01-05"></script>
         <script src="src/paint.js?version=2021-07-05"></script>
         <script src="src/lists.js?version=2021-12-15"></script>
-        <script src="src/byob.js?version=2021-12-16"></script>
+        <script src="src/byob.js?version=2022-01-07"></script>
         <script src="src/tables.js?version=2021-05-07"></script>
         <script src="src/sketch.js?version=2021-11-03"></script>
         <script src="src/video.js?version=2019-06-27"></script>

src/blocks.js

@@ -989,11 +989,11 @@ SyntaxElementMorph.prototype.labelParts = {
     */
     '%t': {
         type: 'template',
-        label: 'v'
+        label: '\xa0' // non-breaking space, appears blank
     },
     '%upvar': {
         type: 'template',
-        label: '\u2191' // up-arrow
+        label: '\xa0' // non-breaking space, appears blank
     },
 
     // other single types
@@ -3810,7 +3810,7 @@ BlockMorph.prototype.syntaxTree = function (parameterNames) {
     parts.at(1).updateEmptySlots();
     if (expr.selector === 'reportGetVar') {
         parts.add(expr.blockSpec);
-        expr.setSpec('v');
+        expr.setSpec('\xa0'); // non-breaking space, appears blank
     }
     parameterNames.forEach(name => parts.add(name));
     return parts;

src/byob.js

@@ -9,7 +9,7 @@
     written by Jens Mönig
     jens@moenig.org
 
-    Copyright (C) 2021 by Jens Mönig
+    Copyright (C) 2022 by Jens Mönig
 
     This file is part of Snap!.
 
@@ -110,7 +110,7 @@ WatcherMorph, XML_Serializer, SnapTranslator, SnapExtensions*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.byob = '2021-December-16';
+modules.byob = '2022-January-07';
 
 // Declarations
 
@@ -725,11 +725,11 @@ CustomCommandBlockMorph.prototype.refresh = function (aDefinition) {
         });
     }
 
-    // find unnamed upvars and label them
+    // find unnamed upvars (indicated by non-breaking space) and label them
     // to their internal definition (default)
     this.cachedInputs = null;
     this.inputs().forEach((inp, idx) => {
-        if (inp instanceof TemplateSlotMorph && inp.contents() === '\u2191') {
+        if (inp instanceof TemplateSlotMorph && inp.contents() === '\xa0') {
             inp.setContents(def.inputNames()[idx]);
         }
     });