It's been discussed several months ago (sorry, I don't have a link).
Basically, you can use "indentless YAML" even now, it's called flow style.
As for the general feel, I suppose JSON is quite close.
----- Original Message -----
From: "TRANS" <transfire@...>
To: "Yaml-core" <yaml-core@...>
Sent: Thursday, December 22, 2005 6:36 AM
Subject: [Yaml-core] Indentless YAML ?
> This might seem an odd question, but please entertain the thought. If
> YAML were not to have been indent significant, how might it's syntax
> have turned out?