Negative render rules don't work as intended

[andilem]

According to the documentation, a negative rule like <m key="k" value="~|false"> should match when the key "k" is not present or it has the value "false".
But that is not the case - the rule matches when the key "k" is not present or any key (not just k) has the value "false".
The code reads:

static class NegativeRule extends Rule {
...
        @Override
        public boolean matchesTags(Tag[] tags) {
            if (!containsKeys(tags))
                return true;

            for (Tag tag : tags)
                for (String value : values)
                    if (Utils.equals(value, tag.value))
                        return !exclusive;

            return exclusive;
        }
}

It is clear that any tags are evaluated, not just the specified one(s).
Is this behavior intended? If yes, it seems very strange and there is no way to specify a rule like described in the first place.