From b9a9312e2dd42e1ac32aacf936cb6655b358e844 Mon Sep 17 00:00:00 2001
From: SpikedCola <parkinglotlust@gmail.com>
Date: Fri, 29 Aug 2025 22:52:38 -0400
Subject: [PATCH] fix: remove 0x09, 0x0a, 0x0d characters from list of control
 characters.

this fixes an issue where excel complains about "unreadable content" if a cell contains a "\n". these characters were originally excluded from the list, but were added by mistake in commit 250394d.
---
 src/PhpSpreadsheet/Shared/StringHelper.php | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/src/PhpSpreadsheet/Shared/StringHelper.php b/src/PhpSpreadsheet/Shared/StringHelper.php
index a354bf8e36..0f4a3ef511 100644
--- a/src/PhpSpreadsheet/Shared/StringHelper.php
+++ b/src/PhpSpreadsheet/Shared/StringHelper.php
@@ -19,11 +19,8 @@ class StringHelper
         "\x06",
         "\x07",
         "\x08",
-        "\x09",
-        "\x0a",
         "\x0b",
         "\x0c",
-        "\x0d",
         "\x0e",
         "\x0f",
         "\x10",
@@ -53,11 +50,8 @@ class StringHelper
         '_x0006_',
         '_x0007_',
         '_x0008_',
-        '_x0009_',
-        '_x000A_',
         '_x000B_',
         '_x000C_',
-        '_x000D_',
         '_x000E_',
         '_x000F_',
         '_x0010_',