diff_check_fill(win_T *wp, linenr_T lnum)
{
    int		n;

    // be quick when there are no filler lines
    if (!(diff_flags & DIFF_FILLER))
	return 0;
    n = diff_check(wp, lnum);
    if (n <= 0)
	return 0;
    return n;
}
diff_check_fill(win_T *wp, linenr_T lnum)
{
    int		n;

     
    if (!(diff_flags & DIFF_FILLER))
	return 0;
    n = diff_check(wp, lnum);
    if (n <= 0)
	return 0;
    return n;
}