From 27e7f7c88d9178568ae5220f9922e506c5a90a65 Mon Sep 17 00:00:00 2001
From: Tim van Dijen <tvdijen@gmail.com>
Date: Mon, 17 Jul 2023 20:40:10 +0200
Subject: [PATCH] Strip even more whitespace characters that do not belong in
 b64 strings (see RFC 7468)

---
 src/Base64ElementTrait.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Base64ElementTrait.php b/src/Base64ElementTrait.php
index 7702620..febfadd 100644
--- a/src/Base64ElementTrait.php
+++ b/src/Base64ElementTrait.php
@@ -32,7 +32,7 @@ trait Base64ElementTrait
      */
     protected function sanitizeContent(string $content): string
     {
-        return str_replace(["\r", "\n", "\t", ' '], '', $content);
+        return str_replace(["\f", "\r", "\n", "\t", "\v", ' '], '', $content);
     }