fixed a glitch in the custom block help mechanism (show only the prototype)

HISTORY.md

@@ -41,6 +41,7 @@
 
 ### 2019-02-15
 * BYOB: tweaked yesterday's fix...
+* Blocks: fixed a glitch in the custom block help mechanism (show only the prototype)
 
 ### 2019-02-14
 * BYOB: keep empty numerical input slots in custom blocks empty when relabelling

snap.html

@@ -6,7 +6,7 @@
         <link rel="shortcut icon" href="src/favicon.ico">
         <script type="text/javascript" src="src/morphic.js?version=2019-02-07"></script>
         <script type="text/javascript" src="src/widgets.js?version=2018-10-02"></script>
-        <script type="text/javascript" src="src/blocks.js?version=2019-02-07"></script>
+        <script type="text/javascript" src="src/blocks.js?version=2019-02-15"></script>
         <script type="text/javascript" src="src/threads.js?version=2019-01-28"></script>
         <script type="text/javascript" src="src/objects.js?version=2019-02-07"></script>
         <script type="text/javascript" src="src/gui.js?version=2019-02-07"></script>

src/blocks.js

@@ -148,7 +148,7 @@ CustomCommandBlockMorph, SymbolMorph, ToggleButtonMorph, DialMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2019-February-07';
+modules.blocks = '2019-February-15';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -3129,6 +3129,7 @@ BlockMorph.prototype.showHelp = function () {
         blockEditor,
         pic = new Image(),
         help,
+        def,
         comment,
         block,
         spec,
@@ -3164,11 +3165,12 @@ BlockMorph.prototype.showHelp = function () {
     };
 
     if (this.isCustomBlock) {
-        comment = this.isGlobal ?
-            this.definition.comment
-                : this.scriptTarget().getMethod(this.blockSpec).comment;
+        def = this.isGlobal ? this.definition
+                : this.scriptTarget().getMethod(this.blockSpec);
+        comment = def.comment;
         if (comment) {
-            block = this.fullCopy();
+            block = def.blockInstance();
+            block.refreshDefaults(def);
             block.addShadow();
             comment = comment.fullCopy();
             comment.contents.parse();