>> RedCloth.new("next. ").to_html
ArgumentError: wrong number of arguments (1 for 0)
	from /Library/Ruby/Gems/1.8/gems/RedCloth-4.1.0/lib/redcloth/textile_doc.rb:83:in `next'
	from /Library/Ruby/Gems/1.8/gems/RedCloth-4.1.0/lib/redcloth/textile_doc.rb:83:in `to'
	from /Library/Ruby/Gems/1.8/gems/RedCloth-4.1.0/lib/redcloth/textile_doc.rb:83:in `to_html'
	from (irb):11
>> RedCloth.new("next.").to_html
=> "<p>next.</p>"
>> RedCloth.new("next ").to_html
=> "<p>next</p>"