From a8adbfeb9fc7861deade782938222714168a22a8 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 5 Sep 2014 17:28:50 +0100
Subject: [PATCH] Disallow overriding commands with scripts

---
 src/Composer/Command/RunScriptCommand.php | 6 +++---
 src/Composer/Console/Application.php      | 6 +++++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/Composer/Command/RunScriptCommand.php b/src/Composer/Command/RunScriptCommand.php
index 7f94814a7..f01a5febe 100644
--- a/src/Composer/Command/RunScriptCommand.php
+++ b/src/Composer/Command/RunScriptCommand.php
@@ -89,12 +89,12 @@ EOT
             putenv('PATH='.realpath($binDir).PATH_SEPARATOR.getenv('PATH'));
         }
 
-        $args = $input->getArguments();
+        $args = $input->getArgument('args');
 
         if (in_array($script, $this->commandEvents)) {
-            return $composer->getEventDispatcher()->dispatchCommandEvent($script, $input->getOption('dev') || !$input->getOption('no-dev'), $args['args']);
+            return $composer->getEventDispatcher()->dispatchCommandEvent($script, $input->getOption('dev') || !$input->getOption('no-dev'), $args);
         }
 
-        return $composer->getEventDispatcher()->dispatchScript($script, $input->getOption('dev') || !$input->getOption('no-dev'), $args['args']);
+        return $composer->getEventDispatcher()->dispatchScript($script, $input->getOption('dev') || !$input->getOption('no-dev'), $args);
     }
 }
diff --git a/src/Composer/Console/Application.php b/src/Composer/Console/Application.php
index 524b01df3..266767d9b 100644
--- a/src/Composer/Console/Application.php
+++ b/src/Composer/Console/Application.php
@@ -117,7 +117,11 @@ class Application extends BaseApplication
             if (isset($composer['scripts']) && is_array($composer['scripts'])) {
                 foreach ($composer['scripts'] as $script => $dummy) {
                     if (!defined('Composer\Script\ScriptEvents::'.str_replace('-', '_', strtoupper($script)))) {
-                        $this->add(new Command\ScriptAliasCommand($script));
+                        if ($this->has($script)) {
+                            $output->writeln('<warning>A script named '.$script.' would override a native Composer function and has been skipped</warning>');
+                        } else {
+                            $this->add(new Command\ScriptAliasCommand($script));
+                        }
                     }
                 }
             }