- //
  o $home =  $ENV{HOME} // $ENV{LOGDIR} // (getpwuid($<))[7] // die "You're homeless!\n";
  o arrays:
    @a = @b || @c;              # this is wrong
    @a = scalar(@b) || @c;      # really meant this
    @a = @b ? @b : @c;          # this works fine, though

- Lexical Subroutines

- package foo; our @ISA = ('bla'); package bar; our @ISA = ('bla');

- $toto[$#foobar]

- [ @pt ], $info;

- if (...) {
     require foobar:
     foobar::foo();
  }
  foobar::bar(); # <= mignt not be loaded

- $done += grep { !/\.src\.rpm$/ } values %$transaction_sources;

- $10, $11, ...

- syntax error on sub (can|cmp|isa|print|use) () {}

- sprintf("%s %.2f", ...)

- use 5.008_000;

- sub f { my ($a) = @_; $a++ }

- missing hint ("you can replace "any { $_ eq ... } @l" with "member(..., @l)")
  for:
	if (!any { $_url eq $_ } @urls) { 
  OK for:
	if (!any { $_ eq $url } @urls) { 

- foreach my $f (<lib/MDK/Common/*.pm>) {

- # perl_checker: use lib qw(/some/dir)

- # perl_checker: use foobar

- # perl_checker: RE-EXPORT-ALL in other modules

- $run{with_flags} .= $run{with_flags} . " --without " . $_[0];

- $short_entries[$#entries] = $1;

- undeclared variable $^
  (really $^I in MDK::Common::File)

- sort { values %{$list->[$a]} <=> values %{$list->[$b]} }
- ($p->is_arch_compat < min map { $_->is_arch_compat } @chosen) ? 10 : 0;

- (-e "$urpm->{cachedir}/partial/$basename" && -s _ > 32)

- join('-', ($p->fullname)[0..2])

- $l[1..$#l]

- { sub f {} } f();

- package foo; ... foo::f()

- my $pid = chomp_(`pidof -x net_applet`) and kill 1, $pid;

- unless ($z = "") {}

- vec($mask, $Offsets{'all'}, 1) = 3

- don't use .perl_checker.cache when .perl_checker changed

- bad slice $l{@l} instead of @l{@l}

- last inside a do { ... } until

- map {; "$_.$ext" => 1 } @l
  suggest map { ("$_.$ext" => 1) } @l
  instead of saying unneeded ";"

- @l = (@l, foo());
- @l = (foo(), @l);

- $value =~ s!1!$self->getvalue!ge;

- http://perlcritic.com/pod/Perl/Critic/Policy/ControlStructures/ProhibitUnreachableCode.html
  die ''; print "FOO\n";
  exit ; print "FOO\n";