From 7b6ccde97afe1e85029dab144cc57224d2986d02 Mon Sep 17 00:00:00 2001
From: Niels Keurentjes <niels.keurentjes@omines.com>
Date: Wed, 27 Jan 2016 09:09:29 +0100
Subject: [PATCH] Clarified error message and added braces.

---
 src/Composer/Package/Loader/RootPackageLoader.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index 6f8d45f31..565ff39c4 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -113,8 +113,10 @@ class RootPackageLoader extends ArrayLoader
             }
         }
 
-        if (isset($links[$config['name']]))
-            throw new \InvalidArgumentException(sprintf('Root package \'%s\' cannot require itself in its composer.json', $config['name']));
+        if (isset($links[$config['name']])) {
+            throw new \InvalidArgumentException(sprintf('Root package \'%s\' cannot require itself in its composer.json' . PHP_EOL .
+                        'Did you accidentally name your root package after an external package?', $config['name']));
+        }
 
         $realPackage->setAliases($aliases);
         $realPackage->setStabilityFlags($stabilityFlags);