Fun with Prototypes

[haukex]

Can you tell me:

1. How does this get parsed? (e.g. try adding parentheses to show precedence)
2. Given that the body of each of the four subs is { print Dumper(\@_) }, what is the output?

$_ = "#x";
my @a = qw/b c/;

foo /#(\w+)/, @a;
bar /#(\w+)/, @a;
quz /#(\w+)/, @a;
baz /#(\w+)/, @a;

Hint:

<Reveal this spoiler or all spoilers in this node or all in this thread>

Solution:

<Reveal this spoiler>