module Erubis::StringBufferEnhancer

def self.desc   # :nodoc:
  "use a String object for buffering"
end

def add_postamble(src)
  src << "\n" unless src[-1] == ?\n
  src << "#{@bufvar}.to_s\n"
end

def add_preamble(src)
  src << "#{@bufvar} = '';"
end