From 0a7b7b0f42e4168881eff32c3369aefb0dec8d0a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jens=20M=C3=B6nig?= <jens@moenig.org>
Date: Thu, 14 Nov 2024 11:27:39 +0100
Subject: [PATCH] fixed an error when referencing a renamed or nonexisting
 input slot in a slot-menu-event hat block

---
 HISTORY.md  | 4 +++-
 snap.html   | 2 +-
 src/byob.js | 4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/HISTORY.md b/HISTORY.md
index d77b33dff..b89eea7e4 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -3,9 +3,11 @@
 ## in development:
 * **Notable Fixes:**
     * fixed "reshape" to let a zero dimension consistenly refer to the available leaf count, e.g. reshape (['foo', 'bar'], 0) => ['foo', 'bar']
+    * fixed an error when referencing a renamed or nonexisting input slot in a slot-menu-event hat block
 
 ### 2024-11-14
-* lists: fixed "reshape" to let a zero dimension consistenly refer to the available leaf count, e.g. reshape (['foo', 'bar'], 0) => ['foo', 'bar']  
+* lists: fixed "reshape" to let a zero dimension consistenly refer to the available leaf count, e.g. reshape (['foo', 'bar'], 0) => ['foo', 'bar']
+* byob: fixed an error when referencing a renamed or nonexisting input slot in a slot-menu-event hat block
 
 ## 10.2.4:
 * **Notable Fixes:**
diff --git a/snap.html b/snap.html
index 698278f43..c42c49389 100755
--- a/snap.html
+++ b/snap.html
@@ -23,7 +23,7 @@
         <script src="src/gui.js?version=2024-11-12"></script>
         <script src="src/paint.js?version=2023-05-24"></script>
         <script src="src/lists.js?version=2024-11-14"></script>
-        <script src="src/byob.js?version=2024-11-11"></script>
+        <script src="src/byob.js?version=2024-11-14"></script>
         <script src="src/tables.js?version=2023-08-17"></script>
         <script src="src/sketch.js?version=2023-05-24"></script>
         <script src="src/video.js?version=2019-06-27"></script>
diff --git a/src/byob.js b/src/byob.js
index 8bb7b250c..730a56432 100644
--- a/src/byob.js
+++ b/src/byob.js
@@ -111,7 +111,7 @@ ArgLabelMorph, embedMetadataPNG, ArgMorph, RingMorph, InputList*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.byob = '2024-November-11';
+modules.byob = '2024-November-14';
 
 // Declarations
 
@@ -3476,7 +3476,7 @@ BlockEditorMorph.prototype.updateDefinition = function () {
         menuHats.forEach(hat => {
             let slot = hat.inputs()[0].evaluate(),
                 info = this.definition.declarations.get(slot);
-            if (slot !== '' && !info[2]) {
+            if (slot !== '' && info && !info[2]) {
                 info[2] = this.definition.encodeChoices(
                     new List(['§_dynamicMenu'])
                 );