any one get this error when running with '-w'?

took a peek in the file - but there are some bizarre goings on in there:

module_eval <<'.,.,', 'src/yaml.y.rb', 81
  def _reduce_27( val, _values, result )
    result = new_node( 'seq', val[1] )
    result
  end
..,.,

looks like some heredocs and...  what?  can anyone explain this syntax - looks
like C preprocessor stuff?


-a
--
  ====================================
  | Ara Howard
  | NOAA Forecast Systems Laboratory
  | Information and Technology Services
  | Data Systems Group
  | R/FST 325 Broadway
  | Boulder, CO 80305-3328
  | Email: ara.t.howard / noaa.gov
  | Phone:  303-497-7238
  | Fax:    303-497-7259
  | ~ > ruby -e 'p(%.\x2d\x29..intern)'
  ====================================