From c9aaad795dbeaa9133a14b0d40fb0683cad30a2f Mon Sep 17 00:00:00 2001
From: Jeremy Kemper <jeremy@bitsweat.net>
Date: Thu, 3 Apr 2008 17:27:55 +0000
Subject: [PATCH] Ruby 1.9 compat: ascii encoding for quoted-printable regexps

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9217 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 actionmailer/lib/action_mailer/quoting.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/actionmailer/lib/action_mailer/quoting.rb b/actionmailer/lib/action_mailer/quoting.rb
index d6e04e4d83..b222432787 100644
--- a/actionmailer/lib/action_mailer/quoting.rb
+++ b/actionmailer/lib/action_mailer/quoting.rb
@@ -24,6 +24,8 @@ module ActionMailer
 
     # Quote the given text if it contains any "illegal" characters
     def quote_if_necessary(text, charset)
+      text = text.dup.force_encoding(Encoding::ASCII_8BIT) if text.respond_to?(:force_encoding)
+
       (text =~ CHARS_NEEDING_QUOTING) ?
         quoted_printable(text, charset) :
         text