lookup!

# File railties/lib/rails/command/behavior.rb, line 96
          def lookup!
            $LOAD_PATH.each do |base|
              Dir[File.join(base, *file_lookup_paths)].each do |path|
                begin
                  path = path.sub("#{base}/", "")
                  require path
                rescue Exception
                  # No problem
                end
              end
            end
          end