for ruby_hl_lvar.vim

test.rb

require 'stringio'

module Vim
end

require '~/.vim/bundle/ruby_hl_lvar.vim/autoload/ruby_hl_lvar.vim.rb'

$o = STDOUT

class RubyHlLvar::Extractor
  def warn(msg)
    $o.puts msg
  end
end

ARGV.each do |path|
  $o = StringIO.new("")
  f = File.read(path)
  RubyHlLvar::Extractor.new(true).extract(f)

  $o.rewind
  s = $o.read
  next if s.empty?

  puts path
  print s
  puts
end

Usage

ruby test.rb target.rb target2.rb ...