From 881f9779e6ba74a0336d44782910c65328930871 Mon Sep 17 00:00:00 2001
From: calixteman <calixte.denizet@gmail.com>
Date: Thu, 26 Feb 2026 16:46:34 +0100
Subject: [PATCH] Don't check for surrogates when verifying the chars to
 normalize

---
 web/pdf_find_utils.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/web/pdf_find_utils.js b/web/pdf_find_utils.js
index bb52a4623..ef8160e2c 100644
--- a/web/pdf_find_utils.js
+++ b/web/pdf_find_utils.js
@@ -140,6 +140,9 @@ function getNormalizeWithNFKC() {
     const diacriticsRegex = /^\p{M}$/u;
     // Some chars must be replaced by their NFKC counterpart during a search.
     for (let i = 0; i < 65536; i++) {
+      if (i >= 0xd800 && i <= 0xdfff) {
+        continue; // Skip surrogates since they're not valid Unicode scalar values.
+      }
       const c = String.fromCharCode(i);
       if (c.normalize("NFKC") !== c && !diacriticsRegex.test(c)) {
         if (range.length !== 2) {