gistfile1.builder

files = Dir.glob('dir/**/*')

output_to = File.open('result.txt', 'w')

for file in files 
  if file =~ /(rb|haml)$/ and !(file =~ /plugins/)
    output_to.write "# FAILAS: #{file}"
    output_to.write "\n"
    output_to.write(File.read(file))
    output_to.write "\n"
  end
end

output_to.close