process_view_paths

# File actionpack/lib/action_view/template_finder.rb, line 23
      def process_view_paths(*view_paths)
        view_paths.flatten.compact.each do |dir|
          next if @@processed_view_paths.has_key?(dir)
          @@processed_view_paths[dir] = []
          
          # 
          # Dir.glob("#{dir}/**/*/**") reads all the directories in view path and templates inside those directories
          # Dir.glob("#{dir}/**") reads templates residing at top level of view path
          # 
          (Dir.glob("#{dir}/**/*/**") | Dir.glob("#{dir}/**")).each do |file|
            unless File.directory?(file)
              @@processed_view_paths[dir] << file.split(dir).last.sub(/^\//, '')

              # Build extension cache
              extension = file.split(".").last
              if template_handler_extensions.include?(extension)
                key = file.split(dir).last.sub(/^\//, '').sub(/\.(\w+)$/, '')
                @@file_extension_cache[dir][key] << extension
              end
            end
          end
        end
      end