I can set Emoji as GET parameter names and it works. Not sure if I rant about that or not.

You have a Unicode capable browser like pretty much everyone else.

I've often seen URLs like

?some=params&utf8= ✔

@noda not just the browser, in the code as well. for example:

if params[:📞].present?

or as a variable:

@😃 = "sample"

@rozzzly it’s a quick way to detect Unicode capabilities. I prefer sub=marine and things like that. 😋 Every browser supports Unicode these days and you'll run into more issues with older browsers long before Unicode support would become a problem.