gistfile1.rb

require 'nokogiri'

html = %(<div class="next-input-wrapper"><label class="next-label next-label--switch" for="radio-2"><input class="next-radio" id="radio-2" name="radio-group" type="radio" value="2" /><span class="next-radio--styled"></span>A longer label with text that wraps (just resize the iframe to see me in action!)</label></div>)

doc = Nokogiri::XML(html,&:noblanks)

puts doc.to_xml

__END__

<div class="next-input-wrapper">
  <label for="radio-2" class="next-label next-label--switch">
    <input type="radio" class="next-radio" id="radio-2" name="radio-group" />
    <span class="next-radio--styled"></span>
    A longer label with text that wraps (just resize the iframe to see me in action!)
  </label>
</div>