This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
The optional task replaceregexp allows you to specify any regular expression including non-case sensitivity. All the optional tasks require an extra jar in the classpath, so check the documentation before calling it.