From 9392adef79bedd1feea7e3053d695850ef5707f1 Mon Sep 17 00:00:00 2001
From: Tehem <tehem@tehem.net>
Date: Tue, 28 Jul 2015 00:01:01 +0200
Subject: [PATCH] Fixes #4302 allow COMPOSER env with config statements
 (overrides --file)

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

diff --git a/src/Composer/Command/ConfigCommand.php b/src/Composer/Command/ConfigCommand.php
index a833a5140..41e9e3766 100644
--- a/src/Composer/Command/ConfigCommand.php
+++ b/src/Composer/Command/ConfigCommand.php
@@ -139,7 +139,7 @@ EOT
         // passed in a file to use
         $configFile = $input->getOption('global')
             ? ($this->config->get('home') . '/config.json')
-            : $input->getOption('file');
+            : (trim(getenv('COMPOSER')) ? trim(getenv('COMPOSER')) : $input->getOption('file'));
 
         // create global composer.json if this was invoked using `composer global config`
         if ($configFile === 'composer.json' && !file_exists($configFile) && realpath(getcwd()) === realpath($this->config->get('home'))) {