match with quoted pattern

I was checking how Jsoup handles :matches(regex) and noticed that the parsing code is not quite robust enough. Here’s a plausible example that fails:

final Document doc = Jsoup.parse("<div>1) foo</div>");
System.out.println(doc.select("div:matches(" + Pattern.quote("1)") + ")"));

This is because Pattern.quote doesn’t escape with backslashes like Jsoup expects, but rather wraps the text between \Q and \E, with some special handling if the original text contained \E.

[SliverySky]

The bug is that chompBalance() did not ignore the bracket in \Q \E and leads to unbalanced brackets error . It should ignore. So I modify the chompBalance() by ignoring the brackets which are between \Q \E. Then it work well. And I have committed a pull request.

[jhy]

Thanks all