in reply to Re: Perl named operators and builtin subs introduced since 5.6
in thread Finding when a feature or keyword was introduced

I collect some non-features in Syntax::Construct, but Regexp is not one of them (I might add it, though).

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In Section Seekers of Perl Wisdom