flush_newline_if_pending

# File actionview/lib/action_view/template/handlers/erb/erubi.rb, line 75
          def flush_newline_if_pending(src)
            if @newline_pending > 0
              with_buffer { src << ".safe_append='#{"\n" * @newline_pending}" << @text_end }
              @newline_pending = 0
            end
          end