expand variadic inputs to their initial slots amount (if any is speci…

…fied) when restoring them (i.e. when removing an embedded reporter block)

HISTORY.md

@@ -11,10 +11,13 @@
 * **Notable Fixes:**
     * fixed input names when querying a custom block definition that has no function body script
     * hide variadic input arrows in case the number of slots is fixed  
+    * expand variadic inputs to their initial slots amount (if any is specified) when restoring them (i.e. when removing an embedded reporter block)
 
 ### 2024-11-12
 * threads: fixed input names when querying a custom block definition that has no function body script
 * metaprogramming library: new "expand (input) to (n) slots" command
+* blocks: hide variadic input arrows in case the number of slots is fixed
+* blocks: expand variadic inputs to their initial slots amount (if any is specified) when restoring them (i.e. when removing an embedded reporter block)
 
 ### 2024-11-11
 * threads: expose a copy of the custom block as "caller" to input slot reaction scripts inside custom block definitions

src/blocks.js

@@ -1594,6 +1594,10 @@ SyntaxElementMorph.prototype.revertToEmptyInput = function (arg) {
     }
     this.replaceInput(arg, deflt);
     if (deflt instanceof MultiArgMorph) {
+        if (deflt.initialSlots) {
+            deflt.collapseAll();
+            deflt.expandTo(deflt.initialSlots);
+        }
         deflt.refresh();
     } else if (deflt instanceof RingMorph) {
         deflt.fixBlockColor();
@@ -14572,7 +14576,7 @@ MultiArgMorph.prototype.collapseAll = function () {
 };
 
 MultiArgMorph.prototype.expandTo = function (arity = 0) {
-    // experimental for custom block arity control in v10.2 only
+    // experimental in v10.2
     var len = this.inputs().length,
         i;