rem: error (0, errno, "%s", pretty_filename);
add: error (0, errno, _("error reading %s"), quote (pretty_filename));
context: start_bytes (const char *pretty_filename, int fd, off_t n_bytes){  char buffer[BUFSIZ];  size_t bytes_read = 0;  while (0 < n_bytes)    {      bytes_read = safe_read (fd, buffer, BUFSIZ);      if (bytes_read == 0)	return -1;      if (bytes_read == SAFE_READ_ERROR)	{	  error (0, errno, "%s", pretty_filename);	  return 1;	}      n_bytes -= bytes_read;    }  if (n_bytes < 0)    xwrite (STDOUT_FILENO, &buffer[bytes_read + n_bytes], -n_bytes);  return 0;}