rem: printf (" %-12s", _("When"));
add: printf (" %-*s", time_format_width, _("When"));
context: print_heading (void){  printf ("%-8s", _("Login"));  if (include_fullname)    printf (" %-19s", _("Name"));  printf (" %-9s", _(" TTY"));  if (include_idle)    printf (" %-6s", _("Idle"));  printf (" %-12s", _("When"));#ifdef HAVE_UT_HOST  if (include_where)    printf (" %s", _("Where"));#endif  putchar ('\n');}