rem: fprintf (stderr, _(" on repetition %d\n"), repetition);
add: { char buf[INT_BUFSIZE_BOUND (uintmax_t)]; fprintf (stderr, _(" on repetition %s\n"), umaxtostr (repetition, buf)); }
context: regexp_error (struct control *p, int repetition, boolean ignore){  fprintf (stderr, _("%s: `%s': match not found"),	   program_name, global_argv[p->argnum]);  if (repetition)    fprintf (stderr, _(" on repetition %d\n"), repetition);  else    fprintf (stderr, "\n");  if (!ignore)    {      dump_rest_of_file ();      close_output_file ();    }  cleanup_fatal ();}