From 9a6b674264ad4fa5609da83f913f3e8109a56e8d Mon Sep 17 00:00:00 2001
From: N624-debu <nasimul.khan875@gmail.com>
Date: Mon, 22 Sep 2025 23:18:51 +0300
Subject: [PATCH] Suggesting alternative username when taken (client-side)

---
 public/src/client/register.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/public/src/client/register.js b/public/src/client/register.js
index f989901e7b..fb580cc1c2 100644
--- a/public/src/client/register.js
+++ b/public/src/client/register.js
@@ -135,7 +135,9 @@ define('forum/register', [
 				if (results.every(obj => obj.status === 'rejected')) {
 					showSuccess(usernameInput, username_notify, successIcon);
 				} else {
-					showError(usernameInput, username_notify, '[[error:username-taken]]');
+					const entered = (usernameInput && usernameInput.value ? usernameInput.value : '').trim();
+					const suggestion = entered ? `${entered}suffix` : 'yourname_suffix';
+					showError(usernameInput, username_notify, `Username taken. Maybe try "${suggestion}"`);
 				}
 
 				callback();