From d547102253d21f11e2ab772c282f96945928c1fa Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Thu, 7 Feb 2013 22:31:05 -0600
Subject: [PATCH] debrew: restore ARGV even when IRB.setup raises

---
 Library/Homebrew/debrew/irb.rb | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Library/Homebrew/debrew/irb.rb b/Library/Homebrew/debrew/irb.rb
index c81e3cf4ba..0e6790af95 100644
--- a/Library/Homebrew/debrew/irb.rb
+++ b/Library/Homebrew/debrew/irb.rb
@@ -6,9 +6,12 @@ module IRB
   def IRB.start_within(binding)
     unless @setup_done
       # make IRB ignore our command line arguments
-      saved_args = ARGV.shift(ARGV.size)
-      IRB.setup(nil)
-      ARGV.concat(saved_args)
+      begin
+        saved_args = ARGV.shift(ARGV.size)
+        IRB.setup(nil)
+      ensure
+        ARGV.replace(saved_args)
+      end
       @setup_done = true
     end