From 19d194a611550ffb65d3ac3d7d7d976ce22307cb Mon Sep 17 00:00:00 2001
From: Marcel Schramm <marceloschr@googlemail.com>
Date: Wed, 25 Dec 2024 14:19:01 +0100
Subject: [PATCH] Frontend message input arrow up now places cursor at the end

---
 internal/frontend/lobby.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/internal/frontend/lobby.js b/internal/frontend/lobby.js
index ef7b9e8c..16d1cbf6 100644
--- a/internal/frontend/lobby.js
+++ b/internal/frontend/lobby.js
@@ -780,6 +780,14 @@ messageInput.addEventListener("keypress", sendMessage);
 messageInput.addEventListener("keydown", function(event) {
     if (event.code === 'ArrowUp' && messageInput.value.length === 0) {
         messageInput.value = lastMessage;
+        const length = lastMessage.length;
+        // Postpone selection change onto next event queue loop iteration, as
+        // nothing will happen otherwise.
+        setTimeout(() => {
+            // length+1 is necessary, as the selection wont change if start and
+            // end are the same,
+            messageInput.setSelectionRange(length + 1, length);
+        }, 0);
     }
 });