How to get rid of non-ascii characters in ruby

Question

I have a Ruby CGI (not rails) that picks photos and captions from a web form. My users are very keen on using smart quotes and ligatures, they are pasting from other sources

Answer 1

No there isn't short of removing all characters beside the basic ones (which is recommended above). The best slution would be handling these names properly (since most filesystems today do not have any problems with Unicode names). If your users paste in ligatures they sure as hell will want to get them back too. If filesystem is your problem, abstract it away and set the filename to some md5 (this also allows you to easily shard uploads into buckets which scan very quickly since they never have too many entries).