I uploaded a fix for the in-flow and final line-break comment.
As usual it is available in http://yaml.github.com/yaml-spec/
Also, YamlReference and http://yaml.org/ypaste/ are updated to this latest spec.
However, due to the HTML form or CGI processing or something, a final line break always exists somehow.
BTW, this version of ypaste also demonstrates the error-recovery feature.
Basically, if you break something, it skips everything until a less-indented line.
Share & Enjoy,