rem: int i;
add: size_t i;
context: print_line (FILE *out_stream, const Buf *x,	    const Line_ptr *bol, const Line_ptr *bol_next){  int i;  for (i = bol->i; i <= bol_next->i; i++)    {      char *a = (i == bol->i ? bol->ptr : x->p[i].start);      char *b = (i == bol_next->i ? bol_next->ptr : ONE_PAST_END (x, i));      fwrite (a, 1, b - a, out_stream);    }}