updated for version 7.4b.002
Problem:    Crash searching for \%(\%(\|\d\|-\|\.\)*\|\*\). (Marcin
	    Szamotulski)  Also for \(\)*.
Solution:   Do add a state for opening parenthesis, so that we can check if it
	    was added before at the same position.
Added tag v7-4b-002 for changeset 2e63b6c763f7