Package: perl-doc Version: 5.24.1~rc3-3 Severity: wishlist File: /usr/share/man/man1/perlvar.1.gz
Since you say In Perl 5.20.0 a new copy-on-write system was enabled by default, which finally fixes all performance issues with these three variables, and makes them safe to use anywhere. Then perhaps don't still say print $`, $&, $'; # bad: perfomance hit print # good: no perfomance hit above it.