How do I tell sleeve from sleeve shunt on this connector?
The sleeve shunt will disconnect from the sleeve when you insert a connector. At the bottom of the drawing they make contact. When you insert a connector that will connect to the lower contact. If you follow that to the right and up you see that it has its soldering tab at the top.  

Typical use of the sleeve shunt is to connect it via a pull-up connector to V+. If the plug isn't inserted the voltage level at the sleeve shunt will be ground, with the plug inserted it will be V+.  

edit
You can also test it by inserting a connector carrying a voltage. You'll measure the voltage between the central pin and the sleeve tab, but nothing between center pin and sleeve shunt.