>>>>> "K" == Kent Sibilev <ksruby / gmail.com> writes:

K> +class Bignum
K> +    yaml_as "tag:yaml.org,2002:int"
K> +end
K> +

 Try it :

moulon% ./ruby -ryaml -e 'puts YAML.load(YAML.dump(1234567890))'
class Fixnum held ownership of the tag:yaml.org,2002:int tag
1234567890
moulon% 


 perhaps best to use Integer ???


Guy Decoux