    #!/usr/bin/perl -w
    # This is a pseudo Perl file to test Kate's Perl syntax highlighting.
    # TODO: this is incomplete, add more syntax examples!

    sub prg($)
    {
    	my $var = shift;

    	$var =~ s/bla/foo/igs;
    	$var =~ s!bla!foo!igs;
    	$var =~ s#bla#foo#igs;
    	$var =~ tr/a-z/A-Z/;
    	($match) = ($var =~ m/(.*?)/igs);

    	$test = 2/453453.21;
    	$test /= 2;

    	print qq~d fsd fsdf sdfl sd~

    	$" = '/';

    	$foo = <<__EOF;
    d ahfdklf klsdfl sdf sd
    fsd sdf sdfsdlkf sd
    __EOF

    	$x = "dasds";

    	next if( $match eq "two" );
    	next if( $match =~ /go/i );

    	@array = (1,2,3);		# a comment
    	@array = qw(apple foo bar);
    	push(@array, 4);
    	%hash = (red => 'rot',
    		blue => 'blau');
    	print keys(%hash);
    }

    sub blah {
        my $str = << '    EOS';
            this is my string
            and it's continuation
        EOS

        $str = "hello world";

        $str = << "    EOS";
            this is my string
            and it's continuation
        EOS
    }

    &blah;
    prg("test");

    # Bracket closures in RegExp patterns (bug #364866)
    qr{ ${var} aa{aa{a}a} aa*b?};
    qr(aa(a(a(a(b|c)a)a)a)aa*b?);
    s{aaa {aaa} a \x{A2} *b?}{aa};
    s(aa(a(a(a(b|c)a)a)a)aa)(aa);

    # Strings as scalar references (bug #348765)
    $x = \'Reference of a String';
    $y = \"Reference of a String";

    # Variables that start with underscore (bug #355300)
    $_variable
    $_ # Reserved var.

    for my $x ($hash->{arr}->@*) {
        for my $k (keys $k->%*) {
            ...
        }
    }

    # Highlight correctly operator // (bug #407327)
    $x = ns // "";
    print $x;