I omitted the "if you'd like to code correctly in Perl 5", yes, but I assumed that was the goal of the OP. :P "
About chained comparisons: It's more natural than the current common practice, yes, but personally I don't find it nice. I never wrote a compiler, nor do I plan to, but I just don't think it's worth the trouble to implement it.
Thank God, other people think otherwise, so in 2029 (my daughter graduates, Perl6 comes out) I'll be happy to get used to chained comparisons.
I'm too lazy to be proud of being impatient.