we allow this?

gistfile1.txt

[ken@kb puppet]# cat /tmp/foo2.rb                                  ruby-1.8.7-p352@puppet
require 'puppet'

module Puppet::Parser::Functions
  newfunction(:'bad&function', :type => :statement) do |args|
    puts "This should not fucking work"
  end
end

puts Puppet::Parser::Functions.function("bad&function".to_sym)

scope = Puppet::Parser::Scope.new
scope.send("function_bad&function".to_sym, [])
[ken@kb puppet]# ruby /tmp/foo2.rb                                 ruby-1.8.7-p352@puppet
function_bad&function
This should not fucking work
[ken@kb puppet]# 



At least the grammar stops it:

[ken@kb puppet]# ./bin/puppet apply -e 'bad&function()'            ruby-1.8.7-p352@puppet
err: Could not parse for environment production: Could not match &function() at line 1 on node kb.local
err: Could not parse for environment production: Could not match &function() at line 1 on node kb.local
[ken@kb puppet]#