From 909c2bd59e5e8a99af320f828b2a67ab0ebfb5f7 Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Sat, 13 Sep 2014 20:04:05 -0500
Subject: [PATCH] Replace loop + delete with array difference

---
 Library/Homebrew/cmd/--env.rb | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/Library/Homebrew/cmd/--env.rb b/Library/Homebrew/cmd/--env.rb
index 478cc4c629..1a78f3cfd5 100644
--- a/Library/Homebrew/cmd/--env.rb
+++ b/Library/Homebrew/cmd/--env.rb
@@ -35,10 +35,7 @@ module Homebrew
 
   def dump_build_env env
     keys = build_env_keys(env)
-
-    if env["CC"] == env["HOMEBREW_CC"]
-      %w[CC CXX OBJC OBJCXX].each { |key| keys.delete(key) }
-    end
+    keys -= %w[CC CXX OBJC OBJCXX] if env["CC"] == env["HOMEBREW_CC"]
 
     keys.each do |key|
       value = env[key]