The following code produces "match returned false", whereas I believe it should 
return true:

import org.apache.regexp.*;
public class RETest {
    public static void main(String[] args) {
        RE re;
        try {
            re = new RE("foo:\\b");
        }
        catch (RESyntaxException e) { return; }
        System.out.println("match returned " + re.match("foo: bar"));
    }
}