From c2653ce3aa7011a13eaf277e3dc73e8993d2706c Mon Sep 17 00:00:00 2001
From: mic <m@micz.it>
Date: Fri, 20 Mar 2026 17:50:30 +0100
Subject: [PATCH] Fixed a bug in the sanitizeString method. see #698

---
 js/mzta-utils.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/mzta-utils.js b/js/mzta-utils.js
index e22ac3eb..c5dbc59e 100644
--- a/js/mzta-utils.js
+++ b/js/mzta-utils.js
@@ -499,8 +499,8 @@ function sanitizeString(input) {
       // Encode non-ASCII characters (e.g. Chinese, emoji) as uXXXX
       sanitized += 'u' + cp.toString(16);
     } else {
-      if (validChar.test(lower)) {
-        sanitized += lower;
+      if (validChar.test(char)) {
+        sanitized += char;
       }
       // else: discard blacklisted ASCII chars
     }