Revision 126081

I have some quite complicated regular expressions here, that could
generate empty parens. In this special case RE.getParen () from
jakarta-regexp-1.1.jar throws a

java.lang.StringIndexOutOfBoundsException: String index out of range: -1

The exception could be avoided and null returned with something like
this:

RE.java:
public String getParen(int which)
{
    int start;
    if (which < parenCount && (start = getParenStart(which)) >= 0)
    {
        return search.substring(start, getParenEnd(which));
    }
    return null;
}

Or should it throw an exception?

Peter Stieglecker
(Java Newbie)
 peter stieglecker pst@ican.at