class IRB::SLex
def create(token, preproc = nil, postproc = nil)
def create(token, preproc = nil, postproc = nil) @head.create_subnode(token.split(//), preproc, postproc) end
def create(token, preproc = nil, postproc = nil) @head.create_subnode(token.split(//), preproc, postproc) end