I recently fixed bug 25136, where <str:chomp> was not working because it was using a deprecated method from Commons Lang. In fact, when I run ant, it shows 48 such warnings (see attachment), which might be causing other bugs as well. So, we should change these classes, re-test the application and create a new release (1.1.0 probably) that requires Commons Lang 2.0.
Created attachment 10616 [details] Ant warnings about deprecated methods
Created attachment 10718 [details] Ant warning after changes
Created attachment 10719 [details] JSP page that uses tagunit to test the taglib (based on the sample page)
Created attachment 10720 [details] Tagunit results after the change
I pretty much fixed the code, but won't mark it as fixed until I change build.xml to include Lang 2.0.
Fixed (and new version available through nightly build)