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.

start:
test for empty string: ok
test for 1 char: ok
test for 3 chars: ok
test for contains meta char: ok
test for contains non-ascii char: ok