You could feed this string to perltidy:

$ perltidy
my $fs = q!.\funkisym.pm!;open(FUNKISYM, q(>),qq($fs)); my $flashbang 
+= q{#! \usr\bin\perl};my $pra = q!use strict;!; my $pra2 = q!use warn
+ings;!;my @fstr = (q(format  FUNKISYM = ),q(@).q(<) x 16,q($flashbang
+).qq(\n),q(@).q(<) x 11,q($pra),q(@).q(<) x 13,q($pra2),qq(.\n));eval
+(join($/,@fstr));select FUNKISYM;write;exec(qq!notepad\.exe $fs!);
^D
my $fs = q!.\funkisym.pm!;
open( FUNKISYM, q(>), qq($fs) );
my $flashbang = q{#! \usr\bin\perl};
my $pra       = q!use strict;!;
my $pra2      = q!use warnings;!;
my @fstr      = (
    q(format  FUNKISYM = ),
    q(@) . q(<) x 16,
    q($flashbang) . qq(\n),
    q(@) . q(<) x 11,
    q($pra),
    q(@) . q(<) x 13,
    q($pra2),
    qq(.\n)
);
eval( join( $/, @fstr ) );
select FUNKISYM;
write;
exec(qq!notepad\.exe $fs!);
[download]

(in this example ^D is used to end the input data; in Windows you'll need to use ^Z)
_{Edit: correct input data and usage example}

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