Syck is, at present, the de facto YAML library for Ruby. <http://whytheluckystiff.net/syck/>
YAML is a serialization language. Hopefully readable. Sensible to the parser in some eyeballs. <http://yaml.org/>
Syck 0.55 patches some memory leaks and parse errors. Loading of objects is now much smoother. Support for using your own yaml_initialize or yaml_new methods. (See lib/yaml/rubytypes.rb for examples.) I'd say typing is done at this point.
A bit more debugging and I will merge with Ruby CVS.
_why