class String

def t2_contains_signature? 

def t2_contains_signature?
	self =~ Textile2_Signature
end

def t2_empty? 

def t2_empty?
	self =~ Textile2_EmptyLine
end

def t2_get_signature

sig, rest = t2_get_signature 
def t2_get_signature
	self =~ Textile2_Signature
	return Textile2Signature.new($1), $2
end