exp1
p2 = exp1(vp, (ignore & IGNORE) || !p1);
static int exp1(Char ***, bool);
int p1 = exp1(vp, ignore);
expected1(exp1)
tok_kind exp1;
toktostr(exp1));
expected2(exp1, exp2)
tok_kind exp1, exp2;
toktostr(exp1), toktostr(exp2));
expected3(exp1, exp2, exp3)
tok_kind exp1, exp2, exp3;
toktostr(exp1), toktostr(exp2), toktostr(exp3));