This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell 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.