[BUG] round trip failure with YAML; both ruby_1_8 and HEAD

I caught syck corrupting data once again, and traced it down to this:

$ cat yamlbug.rb 
require 'yaml'

orig = "\n"
new = YAML.load(YAML.dump(orig))
puts "Should be #{orig.inspect}, but is: #{new.inspect}"
puts "YAML: #{YAML.dump(orig).inspect}"

$ ruby -v yamlbug.rb 
ruby 1.8.4 (2006-05-18) [i686-linux]
Should be "\n", but is: ""
YAML: "--- |\n\n\n"

$ ruby19 -v yamlbug.rb 
ruby 1.9.0 (2006-05-18) [i686-linux]
Should be "\n", but is: ""
YAML: "--- |\n\n\n"


It's a bit unreassuring.

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby