From ae7c076a7c3359e174cb389d598a6af3179190f2 Mon Sep 17 00:00:00 2001
From: David Zuelke <dzuelke@gmail.com>
Date: Tue, 8 Aug 2017 18:04:11 +0200
Subject: [PATCH] use Factory::getComposerFile in ConfigCommand

---
 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 1761402ee..ca8d4491e 100644
--- a/src/Composer/Command/ConfigCommand.php
+++ b/src/Composer/Command/ConfigCommand.php
@@ -146,7 +146,7 @@ EOT
         // passed in a file to use
         $configFile = $input->getOption('global')
             ? ($this->config->get('home') . '/config.json')
-            : ($input->getOption('file') ?: trim(getenv('COMPOSER')) ?: 'composer.json');
+            : ($input->getOption('file') ?: Factory::getComposerFile());
 
         // 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'))) {