From dfc69140fe720b169b978b18b7863611cc0d8077 Mon Sep 17 00:00:00 2001
From: John Stevenson <john-stevenson@blueyonder.co.uk>
Date: Fri, 26 Feb 2021 15:26:47 +0000
Subject: [PATCH] Fix compiler on Windows (#9730)

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

diff --git a/src/Composer/Compiler.php b/src/Composer/Compiler.php
index a31aff946..380f13b3a 100644
--- a/src/Composer/Compiler.php
+++ b/src/Composer/Compiler.php
@@ -135,7 +135,7 @@ class Compiler
         foreach ($finder as $file) {
             if (in_array(realpath($file), $extraFiles, true)) {
                 unset($extraFiles[array_search(realpath($file), $extraFiles, true)]);
-            } elseif (!preg_match('{(/LICENSE|\.php)$}', $file)) {
+            } elseif (!preg_match('{([/\\\\]LICENSE|\.php)$}', $file)) {
                 $unexpectedFiles[] = (string) $file;
             }