(But note that CL implementations also don't provide clever sorting or any kind of regexps at all. SBCL and Allegro do get case conversions right -- at least fo

(But note that CL implementations also don't provide clever sorting or any kind of regexps at all. SBCL and Allegro do get case conversions right -- at least for Latin characters with accents. I'm too ignorant to test more exotic characters.)