eval_includeexpr(char_u *ptr, int len)
{
    char_u	*res;

    set_vim_var_string(VV_FNAME, ptr, len);
    res = eval_to_string_safe(curbuf->b_p_inex,
		      was_set_insecurely((char_u *)"includeexpr", OPT_LOCAL));
    set_vim_var_string(VV_FNAME, NULL, 0);
    return res;
}
eval_includeexpr(char_u *ptr, int len)
{
    char_u	*res;

    set_vim_var_string(VV_FNAME, ptr, len);
    res = eval_to_string_safe(curbuf->b_p_inex,
		      was_set_insecurely((char_u *)"includeexpr", OPT_LOCAL));
    set_vim_var_string(VV_FNAME, NULL, 0);
    return res;
}