Watch out for that regex: it is probably not going to do what you want it to do in this form.

For starters the '*' quantifier at the beginning of the regex is rather odd: you should put something in front of it, now it says 'zero or more of nothing'.

And 'I*' means 'zero or more of I'.

Also watch out for the greediness of the '*' quantifier.

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law