php <\?(?:php)?.*?\?\>
xjs <script\b[^\>]*>.*?</script>
js <script\b(?:[^\>]*?type="text/javascript")[^\>]*>.*?</script>|\<!\[CDATA\[ecmascript:.*?\]\]>|(?<=(?<!\\)"ecmascript:).*?(?=(?<!\\)")
css <style\b[^\>]*>.*?</style>
ruby (<%.*?%>)|(^%.*?[\r\n])
swift \\\(.*?\)
