On Sep 6, 5:10 am, Brian Candler <B.Cand... / pobox.com> wrote: > > Rather, Symbol#to_s should return frozen String? > > Yes, as long as it returns the same frozen string each time. > > Hmm, this sounds like a good solution - it's technically not > backwards-compatible, but I doubt that much code does a Symbol#to_s and > later mutates it. I've tried that. There are some places where it blows up Ruby. So those would have to be rooted out first. T.