From 47bc2fa51a976423818e073500166784028d2826 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 6 Jul 2017 09:51:25 +0200
Subject: [PATCH] Fix exclude-from-classmap being ignored when generating
 on-the-fly class loader, fixes #6503

---
 src/Composer/Autoload/AutoloadGenerator.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Autoload/AutoloadGenerator.php b/src/Composer/Autoload/AutoloadGenerator.php
index 1953e593a..d6924f4e9 100644
--- a/src/Composer/Autoload/AutoloadGenerator.php
+++ b/src/Composer/Autoload/AutoloadGenerator.php
@@ -433,9 +433,14 @@ EOF;
         }
 
         if (isset($autoloads['classmap'])) {
+            $blacklist = null;
+            if (!empty($autoloads['exclude-from-classmap'])) {
+                $blacklist = '{(' . implode('|', $autoloads['exclude-from-classmap']) . ')}';
+            }
+
             foreach ($autoloads['classmap'] as $dir) {
                 try {
-                    $loader->addClassMap($this->generateClassMap($dir, null, null, false));
+                    $loader->addClassMap($this->generateClassMap($dir, $blacklist, null, false));
                 } catch (\RuntimeException $e) {
                     $this->io->writeError('<warning>'.$e->getMessage().'</warning>');
                 }