Set direction of text depending on text itself

I just found that there is an html5 tag dir=auto that simply works in most situations.

For example I wrote this html

<html>
<body>

<p dir="auto">Write this جمله چپ به راست text left-to-right!</p>

<p dir="auto">این RTL sentence  جمله را از راست به چپ بنویس</p>

</body>
</html>

And pasted it in a simple html editor and it works perfectly fine

Could we use the same thing in discourse @sam?