Rails 3.1 stable branch ASSET helpers bug reproducing steps.

application.css

this is the output when visiting

http://localhost:3000/assets/application.css


/*
 * This is a manifest file that'll automatically include all the stylesheets available in this directory
 * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
 * the top of the compiled file, but it's generally better to create a new file per style scope.
*/
div.rails {
  background: image_url("rails.png") no-repeat; }

div.rails1 {
  background: asset_url("rails.png", image) no-repeat; }

div.rails2 {
  background: url(image_path("rails.png")) no-repeat; }

application.scss

/*
 * This is a manifest file that'll automatically include all the stylesheets available in this directory
 * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
 * the top of the compiled file, but it's generally better to create a new file per style scope.
 *= require_self
 *= require_tree . 
*/

div.rails {
  background: image_url("rails.png") no-repeat;
}

div.rails1 {
  background: asset_url("rails.png", image) no-repeat;
}

div.rails2 {
  background: url(image_path("rails.png")) no-repeat;
} 

Gemfile

source 'http://rubygems.org'

# Rails Gems
gem 'rails', :git => 'git://github.com/rails/rails.git', :branch => '3-1-stable'
gem 'sprockets', :git => 'git://github.com/sstephenson/sprockets.git'
gem 'sqlite3'

group :assets do
  gem 'sass-rails', :git => 'git://github.com/rails/sass-rails.git', :branch => '3-1-stable'
  # gem 'sass-rails', "~> 3.1.0.rc"
  gem 'coffee-script'
  gem 'uglifier'
end

gem 'jquery-rails'

group :test do
  # Pretty printed test output
  gem 'turn', :require => false
end

Steps.text

Steps to reproduce by using the guide on heroku. http://devcenter.heroku.com/articles/rails31_heroku_cedar

1. Create a new rails app using RC4
=> rails new css-test

2. Update gemfile with 3-1-branch
4. Test css in scss file