This macro will use your mount if you’re out of combat, and ghost wolf if you’re in combat. With a few various options as well good for use in battle grounds and other PvP environments.
Replace <mount name> with the name of your mount ie: Warcharger
#showtooltip
/cast [stance][combat,nomounted] Ghost Wolf;<mount name>
/dismount [mounted]
Ghost wolf, Flying Mount and Mount all in one with modifiers:
#showtooltip
/cast [combat,nomounted][button:2][modifier] Ghost Wolf
/cast [nostance,nocombat,flyable] <flying mount name>
/cast [nostance,nocombat,noflyable] <standard mount name>
/dismount [mounted]
/cancelform [stance]
This macro will mount you on your flying mount if it’s accessible using the new “flyable” option. If it’s not, you will mount your normal one instead. If you are in combat, you shift into Ghost Wolf instead. If you right-click the macro button or keep a modifier (alt, ctrl, shift, option)pressed while you use the hotkey you will shift into Ghost Wolf regardless of the situation. Use the macro again and you will dismount/shiftshape back. (As of Patch 2.3.0, /cast Ghost Wolf will not unshift out of Ghost Wolf, so you need to use /cancelform instead)
The indoor part of the last macro is just for graphic purposes, to show the flying mount icon indoors, feel free to change that, in any case no one of the three actions will work in doors.