(*ACCEPT) can't leave lookaround borders. So ACCEPT's that are inside
lookarounds can't influence minimum length claculation, if lookaround
entrails are not participate in this calculation (is this true?).
Thus more preferable may be to turn off minimum length scan not for all
patterns that have ACCEPT. But only for patterns with at least one ACCEPT
that is not inside a lookaround. Of course if it's easy to distinguish
such ACCEPT's.
