From 84cd9cc28f5dea30899d54bd457daeed93bc024f Mon Sep 17 00:00:00 2001
From: Jack Nagel
Date: Tue, 10 Jun 2014 11:33:17 -0500
Subject: "exit $?" raises TypeError on Ruby 2.0

---
 Library/Homebrew/utils.rb | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index bb8b6d281..24d028ea0 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -90,9 +90,13 @@ def interactive_shell f=nil
 
   Process.wait fork { exec ENV['SHELL'] }
 
-  unless $?.success?
+  if $?.success?
+    return
+  elsif $?.exited?
     puts "Aborting due to non-zero exit status"
-    exit $?
+    exit $?.exitstatus
+  else
+    raise $?.inspect
   end
 end
 
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