From 616cae109036d3abf786b7f2db68a78714d740e5 Mon Sep 17 00:00:00 2001
From: marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 21 Jul 2011 21:37:43 +0000
Subject: * lib/csv.rb: Do not modify CSV.generate's argument [ruby-core:38356]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32600 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/csv.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/csv.rb')

diff --git a/lib/csv.rb b/lib/csv.rb
index ce05164c75..13f86ec318 100644
--- a/lib/csv.rb
+++ b/lib/csv.rb
@@ -1234,7 +1234,7 @@ class CSV
       io.seek(0, IO::SEEK_END)
       args.unshift(io)
     else
-      encoding = args.last.is_a?(Hash) ? args.last.delete(:encoding) : nil
+      encoding = (args[-1] = args[-1].dup).delete(:encoding) if args.last.is_a?(Hash)
       str      = ""
       str.encode!(encoding) if encoding
       args.unshift(str)
-- 
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