rem: return 1;
add: return true;
context: getseq (FILE *fp, struct seq *seq){  if (seq->count == seq->alloc)    {      seq->alloc *= 2;      seq->lines = (struct line *)	xrealloc ((char *) seq->lines, seq->alloc * sizeof (struct line));    }  if (get_line (fp, &seq->lines[seq->count]))    {      ++seq->count;      return 1;    }  return 0;}