Auto attack

uses a loop to check if attack is set to auto-repeat.

/run for i=1,120 do if IsCurrentAction(i) then return end end CastSpellByName("Attack")

Start Melee Attack

this one is decent enough but it is known to be unreliable if spammed.

/run if (not PlayerFrame.inCombat) then AttackTarget() end

Auto attack

this one is more reliable. but it requires auto attack to be found on the action bar.

/run for z=1,172 do if IsAttackAction(z)then if not IsCurrentAction(z)then UseAction(z);end;end;end;