# File lib/gettext/utils.rb, line 37
  def msgmerge(defpo, refpo, app_version) 
    $stderr.puts defpo
    cmd = ENV["MSGMERGE_PATH"]
    cmd ||= "msgmerge"

    cont = ""
    if FileTest.exist? defpo
      cont = `#{cmd} #{defpo} #{refpo}`
    else
      File.open(refpo) do |io| 
        cont = io.read
      end
    end
    cont.sub!(/(Project-Id-Version\:).*$/, "\\1 #{app_version}\\n\"")
    File.open(defpo, "w") do |out| 
      out.write(cont)
    end
    self
  end