lib/bundler.rb in bundler-1.1.pre.2 vs lib/bundler.rb in bundler-1.1.pre.3

@@ -183,15 +183,30 @@
 
     def settings
       @settings ||= Settings.new(app_config_path)
     end
 
-    def with_clean_env
+    def with_original_env
       bundled_env = ENV.to_hash
       ENV.replace(ORIGINAL_ENV)
       yield
     ensure
       ENV.replace(bundled_env.to_hash)
+    end
+
+    def with_clean_env
+      with_original_env do
+        ENV.delete_if { |k,_| k[0,7] == 'BUNDLE_' }
+        yield
+      end
+    end
+
+    def clean_system(*args)
+      with_clean_env { Kernel.system(*args) }
+    end
+
+    def clean_exec(*args)
+      with_clean_env { Kernel.exec(*args) }
     end
 
     def default_gemfile
       SharedHelpers.default_gemfile
     end