class Middleman::Sitemap::Store

def extensionless_path(file)
  path = file.dup
  end_of_the_line = false
  while !end_of_the_line
    if !::Tilt[path].nil?
      path = path.sub(File.extname(path), "")
    else
      end_of_the_line = true
    end
  end
  # If there is no extension, look for one
  if File.extname(path).empty?
    input_ext = File.extname(file)
    if !input_ext.empty?
      input_ext = input_ext.split(".").last.to_sym
      if @app.template_extensions.has_key?(input_ext)
        path << ".#{@app.template_extensions[input_ext]}"
      end
    end
  end
  path
end