Hi: I noted the lastest Xalan version 2.5.2 still uses (inside package) the regexp 1.2. I thought updating to regexp 1.3 Xalan can solve some of the bugs there are in the current version and plus some hidden errors. Of course this affect Cocoon too.
I know here are people that are Xalan committers too. So please update the regexp to 1.3. Here are the changes in regexp 1.3: http://jakarta.apache.org/regexp/changes.html Best Regards, Antonio Gallardo.