Can a macro tell the difference between a player and Npc ?

[skrump]

I wanted to know specifically if you could use your target type as a modifier

For example for a warrior could I make a macro that shows Hamstring For player controlled mobs
And then have it Display Sunder armor when fighting non player mobs

If the above answer is yes can the same be done to include castsequence with a second modifier
What I am trying to do would do the following

player target /cast Hamstring
non player target /cast [mod:shift] Darkflight; Sunder Armor

[perera]

You can't do that... the closest thing you could do was have an addon or script (in a macro) replace what's on the button based on where you are (for example, it would replace what's on the button when you are in a raid). Note that even if that was in a macro it could not be run in combat.