Hi Benedict, Bruno - I can see that commons-text might be a better home for this functionality than commons-lang. But is the project still active? There haven't been any commits in the past year, and there seem to be no maven binaries available (http://stackoverflow.com/questions/36374510/maven-dependency-to-apache-commons-text). (that said, I don't mind helping to push it back into activity)
Rob - thank you for your comments! A quick look already has me in agreement with most - I'll play around with it on my fork as soon as I have time and push my changes so they're visible. Thanks,Eyal