/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.

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/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.