Subroutine signatures are being added as an experimental feature in perl
5.20.0. This ticket will collect bugs and other acceptance-criteria tickets to
track before subroutine signatures can be considered accepted or failed in a
future version of perl.
What's the current status, (experimental), and is it likely to change soon? I'd like to know whether to include signatures when teaching Perl to beginners. 6 versions (5.20 - 5.30) would seem like enough to decide what should be accepted and what should be deprecated. Subroutine attributes and how to describe them is possibly a separate feature?