/unshift
/unshift
make you leave your shapeshift form.
Examples
/unshift [stance:1/2/4]
This macro will cause you to exit your shapeshift form if you're either in [Dire] Bear Form, Aquatic Form, or Travel Form.
/unshift [stance:1/2/4]
/cast [stance:0] Cat Form; [nocombat nostealth] Prowl
You will exit any form other than Cat Form. Then, if you're not shapeshifted, you'll go into Cat Form. If you are in Cat Form you'll cast Prowl.