Well… OS X is just Mac OS 10 but I take your point. I actually thought you might have meant that later but it seemed too strange. I'd wager I'm the only one here who still runs a Mac on system 9 (and another on 8 actually) and I certainly don't have Perl on any of my old boxes and hardware created (chiefly) to run pre-10 is … 15 years? out of production. So this strikes me as a *highly* academic concern. I still agree that URI (and perhaps Path::Class on the uri->path) is the way to go.