From 6bf136489fc4b6f79099b020c9b339528e46139c Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Mon, 12 Oct 2020 10:53:35 +0200
Subject: [PATCH] Ignore the COMPOSER env var when executing global scope
 commands, fixes #9259

---
 src/Composer/Command/GlobalCommand.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Composer/Command/GlobalCommand.php b/src/Composer/Command/GlobalCommand.php
index 64c7523a3..958643dee 100644
--- a/src/Composer/Command/GlobalCommand.php
+++ b/src/Composer/Command/GlobalCommand.php
@@ -75,6 +75,12 @@ EOT
             return parent::run($input, $output);
         }
 
+        // The COMPOSER env var should not apply to the global execution scope
+        if (getenv('COMPOSER')) {
+            putenv('COMPOSER');
+            unset($_SERVER['COMPOSER']);
+        }
+
         // change to global dir
         $config = Factory::createConfig();
         $home = $config->get('home');