message: Re-add removed comments
diff: @@ -61,11 +61,13 @@ pub struct FILE {
  lock: Mutex<()>,
  file: File,
  + // pub for stdio_ext
  pub(crate) flags: c_int,
  read_buf: Buffer<'static>,
  read_pos: usize,
  read_size: usize,
  unget: Option<u8>,
  + // pub for stdio_ext
  pub(crate) writer: LineWriter<File>,
  // Optional pid for use with popen/pclose
  