From 79438b46382aa08ea83d740247eb16365e6d2327 Mon Sep 17 00:00:00 2001
From: Zach Brock <zbrock@gmail.com>
Date: Tue, 24 Nov 2009 23:51:51 -0800
Subject: adding fix for auto linking to master too

Signed-off-by: Michael Koziarski <michael@koziarski.com>
---
 actionpack/lib/action_view/helpers/text_helper.rb |  2 +-
 actionpack/test/template/text_helper_test.rb      | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/actionpack/lib/action_view/helpers/text_helper.rb b/actionpack/lib/action_view/helpers/text_helper.rb
index 1d92bcb763..be15e227b9 100644
--- a/actionpack/lib/action_view/helpers/text_helper.rb
+++ b/actionpack/lib/action_view/helpers/text_helper.rb
@@ -567,7 +567,7 @@ module ActionView
               end
 
               link_text = block_given?? yield(href) : href
-              href = 'http://' + href unless href.index('http') == 0
+              href = 'http://' + href unless href =~ %r{^[a-z]+://}i
 
               content_tag(:a, h(link_text), link_attributes.merge('href' => href)) + punctuation.reverse.join('')
             end
diff --git a/actionpack/test/template/text_helper_test.rb b/actionpack/test/template/text_helper_test.rb
index 08143ba680..088c07b8bb 100644
--- a/actionpack/test/template/text_helper_test.rb
+++ b/actionpack/test/template/text_helper_test.rb
@@ -360,6 +360,20 @@ class TextHelperTest < ActionView::TestCase
     assert_equal %(<p>#{link10_result} Link</p>), auto_link("<p>#{link10_raw} Link</p>")
   end
 
+  def test_auto_link_other_protocols
+    silence_warnings do
+      begin
+        old_re_value = ActionView::Helpers::TextHelper::AUTO_LINK_RE
+        ActionView::Helpers::TextHelper.const_set :AUTO_LINK_RE, %r{(ftp://)[^\s<]+}
+        link_raw = 'ftp://example.com/file.txt'
+        link_result = generate_result(link_raw)
+        assert_equal %(Download #{link_result}), auto_link("Download #{link_raw}")
+      ensure
+        ActionView::Helpers::TextHelper.const_set :AUTO_LINK_RE, old_re_value
+      end
+    end
+  end
+
   def test_auto_link_already_linked
     linked1 = generate_result('Ruby On Rails', 'http://www.rubyonrails.com')
     linked2 = generate_result('www.rubyonrails.com', 'http://www.rubyonrails.com')
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