A note about Ruby versions and Unicode versions: The Ruby core team is very conservative (in my view too conservative) in introducing new Unicode versions as bug fixes. Update to new Unicode versions therefore only happens for new Ruby versions. RbConfig::CONFIG["UNICODE_VERSION"] ⇒ '9.0.0' VUnicode = y - 2007 VRuby = 1.5 + VUnicode · 0.1 VUnicode = VRuby · 10 - 15 Don't extrapolate too far! Ups a