environment.rb in rexec-1.2.3

- old
+ new
@@ -1,14 +1,33 @@
+# Copyright (c) 2011 Samuel G. D. Williams. <http://www.oriontransfer.co.nz>
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
 
 module RExec
 	# Updates the global ENV for the duration of block. Not multi-thread safe.
 	def self.env (new_env = nil, &block)
-	  old_env = ENV.to_hash
+		old_env = ENV.to_hash
 
-	  ENV.update(new_env) if new_env
+		ENV.update(new_env) if new_env
 
-	  yield
+		yield
 
-	  ENV.clear
-	  ENV.update(old_env)
+		ENV.clear
+		ENV.update(old_env)
 	end
 end
\ No newline at end of file