Thank you. That seemed to do the trick.

I was wondering if you could possibly explain the regex you have used. I am trying now to identify one occurance of the term in a line of text so that I can work out the inverse document frequency (IDF).

So far I have worked out that you are looking for the term, using a non-capturing means (?:pattern), i.e. (?:\W). I haven't a clue what this actually does, nor about the part after \E ..... (?:(?=\W).

I know that the (?=\W) is a regex to look-ahead of a non-word, but not sure what the outer ?: is doing.

cheers,
MonkPaul.

In reply to Re^4: Regex word boundries by MonkPaul
in thread Regex word boundries by MonkPaul

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