Symfony version(s) affected

v7.1.4

Description

Symfony finder allows the user to manipulate files with / regardless of environment, but because / and \ are in different parts of the ASCII table the results of sortByName are inconsistent depending on platform.

How to reproduce

mkdir('Folder');
touch('FolderBase.php');
touch('Folder/Sub.php');

$files = Symfony\Component\Finder\Finder::create()->files()->in(['Folder'])->append(['FolderBase.php'])->sortByName();
foreach ($files as $file) {
  echo (string) $file.PHP_EOL;
}

Possible Solution

Normalize paths in SortableIterator

Additional Context

Linux output:

Folder/Sub.php
FolderBase.php

Windows output:

FolderBase.php
Folder\Sub.php

First reproduced at kint-php/kint#425