From d5d8d00ee0c71c28381d2e278157808970996182 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20Rish=C3=B8j?= <christian@rishoj.net>
Date: Sun, 26 Apr 2020 18:19:25 +0200
Subject: [PATCH] normalize drive letter case

---
 src/Symfony/Component/Filesystem/Filesystem.php           | 8 ++++----
 src/Symfony/Component/Filesystem/Tests/FilesystemTest.php | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 12dcb93d4dc90..382b07226a087 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -455,9 +455,9 @@ public function makePathRelative($endPath, $startPath)
             $startPath = str_replace('\\', '/', $startPath);
         }
 
-        $stripDriveLetter = function ($path) {
+        $splitDriveLetter = function ($path) {
             return (\strlen($path) > 2 && ':' === $path[1] && '/' === $path[2] && ctype_alpha($path[0]))
-                ? [substr($path, 2), $path[0]]
+                ? [substr($path, 2), strtoupper($path[0])]
                 : [$path, null];
         };
 
@@ -475,8 +475,8 @@ public function makePathRelative($endPath, $startPath)
             return $result;
         };
 
-        list($endPath, $endDriveLetter) = $stripDriveLetter($endPath);
-        list($startPath, $startDriveLetter) = $stripDriveLetter($startPath);
+        list($endPath, $endDriveLetter) = $splitDriveLetter($endPath);
+        list($startPath, $startDriveLetter) = $splitDriveLetter($startPath);
 
         $startPathArr = $splitPath($startPath, static::isAbsolutePath($startPath));
         $endPathArr = $splitPath($endPath, static::isAbsolutePath($endPath));
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index 6a55915a3a24e..8ac80437fe5dc 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -1111,6 +1111,7 @@ public function providePathsForMakePathRelative()
             ['/../aa/bb/cc', '/aa/dd/..', 'bb/cc/'],
             ['/../../aa/../bb/cc', '/aa/dd/..', '../bb/cc/'],
             ['C:/aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'],
+            ['C:/aa/bb/cc', 'c:/aa/dd/..', 'bb/cc/'],
             ['c:/aa/../bb/cc', 'c:/aa/dd/..', '../bb/cc/'],
             ['C:/aa/bb/../../cc', 'C:/aa/../dd/..', 'cc/'],
             ['C:/../aa/bb/cc', 'C:/aa/dd/..', 'bb/cc/'],