From 69c50a01ad3c1f0c07a02c975e5d9665e49bffe2 Mon Sep 17 00:00:00 2001
From: boffart <5922739+boffart@users.noreply.github.com>
Date: Wed, 22 Jul 2026 17:51:01 +0300
Subject: [PATCH] fix: preserve unicode recording names on PHP 7.4

---
 Lib/DownloadHeaderPolicy.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Lib/DownloadHeaderPolicy.php b/Lib/DownloadHeaderPolicy.php
index 8cf908b..26ee2e3 100644
--- a/Lib/DownloadHeaderPolicy.php
+++ b/Lib/DownloadHeaderPolicy.php
@@ -8,7 +8,10 @@ final class DownloadHeaderPolicy
 {
     public static function attachment(string $filename): string
     {
-        $clean = str_replace(["\r", "\n", '"', "\0"], '', basename($filename));
+        $normalized = str_replace('\\', '/', $filename);
+        $separator = strrpos($normalized, '/');
+        $basename = $separator === false ? $normalized : substr($normalized, $separator + 1);
+        $clean = str_replace(["\r", "\n", '"', "\0"], '', $basename);
         if ($clean === '') {
             $clean = 'download';
         }