The code is based mostly on the Python code written by Kirill Simonov <xi@resolvent.net> for PyYAML3000.

RbYAML is a project originating in the JRuby project (http://jruby.sourceforge.net), to create a pure Ruby YAML parser for use in JRuby and SYCK cannot be used in this case. Since the effort of writing a new one from scratch seemed like a major undertaking it seemed easier to port an existing one.

The current functionality is more or less 1.1-compliant. What's missing is the Unicode-support. The idea is to have the interface resemble SYCK as much as possible, but this is still work in progress, since some of the major architectural choices are quite different.