From 04aad524ec3a7348f25d97d88464af4e316cd8e9 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Wed, 4 Nov 2020 21:29:33 +0100
Subject: [PATCH] Fix gitlab-domains/github-domains to avoid overwriting the
 default when another domain is configured, refs #9373

---
 src/Composer/Config.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Composer/Config.php b/src/Composer/Config.php
index 93396f191..76504c7ce 100644
--- a/src/Composer/Config.php
+++ b/src/Composer/Config.php
@@ -138,6 +138,8 @@ class Config
             foreach ($config['config'] as $key => $val) {
                 if (in_array($key, array('bitbucket-oauth', 'github-oauth', 'gitlab-oauth', 'gitlab-token', 'http-basic', 'bearer')) && isset($this->config[$key])) {
                     $this->config[$key] = array_merge($this->config[$key], $val);
+                } elseif (in_array($key, array('gitlab-domains', 'github-domains')) && isset($this->config[$key])) {
+                    $this->config[$key] = array_unique(array_merge($this->config[$key], $val));
                 } elseif ('preferred-install' === $key && isset($this->config[$key])) {
                     if (is_array($val) || is_array($this->config[$key])) {
                         if (is_string($val)) {