From ad40cdc3feff067b0947a1a66112c910c196ce33 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 5 Mar 2015 14:40:29 +0000
Subject: [PATCH] Fix overwriteError behavior, fixes #3817

---
 src/Composer/IO/ConsoleIO.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Composer/IO/ConsoleIO.php b/src/Composer/IO/ConsoleIO.php
index 0ab617a94..7de4d8ede 100644
--- a/src/Composer/IO/ConsoleIO.php
+++ b/src/Composer/IO/ConsoleIO.php
@@ -197,7 +197,12 @@ class ConsoleIO extends BaseIO
         if ($newline) {
             $this->doWrite('', true, $stderr);
         }
-        $this->lastMessage = $messages;
+
+        if ($stderr) {
+            $this->lastMessageErr = $messages;
+        } else {
+            $this->lastMessage = $messages;
+        }
     }
 
     /**