From 9ff97b0605aa5572eed3562ca4514f38dac88e6d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafael=20Mendon=C3=A7a=20Fran=C3=A7a?=
 <rafaelmfranca@gmail.com>
Date: Sun, 13 May 2012 19:15:00 -0300
Subject: Merge pull request #3237 from sakuro/data-url-scheme

Support data: url scheme
---
 actionpack/lib/action_view/asset_paths.rb              | 2 +-
 actionpack/lib/action_view/helpers/asset_tag_helper.rb | 2 +-
 actionpack/test/template/asset_tag_helper_test.rb      | 3 ++-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/actionpack/lib/action_view/asset_paths.rb b/actionpack/lib/action_view/asset_paths.rb
index aa5db0d7bc..f6115dbb1b 100644
--- a/actionpack/lib/action_view/asset_paths.rb
+++ b/actionpack/lib/action_view/asset_paths.rb
@@ -37,7 +37,7 @@ module ActionView
     end
 
     def is_uri?(path)
-      path =~ %r{^[-a-z]+://|^cid:|^//}
+      path =~ %r{^[-a-z]+://|^(?:cid|data):|^//}
     end
 
   private
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helper.rb b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
index 5dbba3c4a7..4ee7d7c9c9 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
@@ -358,7 +358,7 @@ module ActionView
 
         src = options[:src] = path_to_image(source)
 
-        unless src =~ /^cid:/
+        unless src =~ /^(?:cid|data):/
           options[:alt] = options.fetch(:alt){ image_alt(src) }
         end
 
diff --git a/actionpack/test/template/asset_tag_helper_test.rb b/actionpack/test/template/asset_tag_helper_test.rb
index aa7304b3ed..cb56090d79 100644
--- a/actionpack/test/template/asset_tag_helper_test.rb
+++ b/actionpack/test/template/asset_tag_helper_test.rb
@@ -164,7 +164,8 @@ class AssetTagHelperTest < ActionView::TestCase
     %(image_tag("//www.rubyonrails.com/images/rails.png")) => %(<img alt="Rails" src="//www.rubyonrails.com/images/rails.png" />),
     %(image_tag("mouse.png", :mouseover => "/images/mouse_over.png")) => %(<img alt="Mouse" onmouseover="this.src='/images/mouse_over.png'" onmouseout="this.src='/images/mouse.png'" src="/images/mouse.png" />),
     %(image_tag("mouse.png", :mouseover => image_path("mouse_over.png"))) => %(<img alt="Mouse" onmouseover="this.src='/images/mouse_over.png'" onmouseout="this.src='/images/mouse.png'" src="/images/mouse.png" />),
-    %(image_tag("mouse.png", :alt => nil)) => %(<img src="/images/mouse.png" />)
+    %(image_tag("mouse.png", :alt => nil)) => %(<img src="/images/mouse.png" />),
+    %(image_tag("data:image/gif;base64,R0lGODlhAQABAID/AMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==", :alt => nil)) => %(<img src="data:image/gif;base64,R0lGODlhAQABAID/AMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" />),
   }
 
   FaviconLinkToTag = {
-- 
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