From bd334c55a00d006168c767ea0442df7d6a1954ea Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Fri, 2 Jan 2015 13:34:20 +0000
Subject: [PATCH] brew.rb: return exit code from internal commands.

---
 Library/brew.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Library/brew.rb b/Library/brew.rb
index 8438533359..88a0f6cc83 100755
--- a/Library/brew.rb
+++ b/Library/brew.rb
@@ -133,6 +133,7 @@ begin
 
   if internal_cmd
     Homebrew.send cmd.to_s.gsub('-', '_').downcase
+    exit 1 if Homebrew.failed?
   elsif which "brew-#{cmd}"
     %w[CACHE CELLAR LIBRARY_PATH PREFIX REPOSITORY].each do |e|
       ENV["HOMEBREW_#{e}"] = Object.const_get("HOMEBREW_#{e}").to_s