Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey guys, I'm trying to make a macro that will stop me from casting heroic strike. Many times I begin casting heroic strike but want to cancel it right after while it is still queued. How would I go about accomplishing this with a macro? /Script SpellStopCasting(); doesn't seem to work; it will remove the yellow "waiting to cast" border from heroic strike, but it will still cast it on my next attack.

I was thinking of perhaps a macro that would stop my autoattack and then begin autoattacking again instantly, but I'm unsure of how to make it. Could someone give me a hand? Thank you

just press autoattack twice? I've autoattack on a hotkey for such situations (also nice in situations when you're switching targets and while tabbing eg. you target a CC mob which you don't want to attack, or if the raidlead orders a dps stop)
if you don't want to do that, you could MAYBE TRY something like
/run AttackTarget() AttackTarget()

LYQ wrote:just press autoattack twice? I've autoattack on a hotkey for such situations (also nice in situations when you're switching targets and while tabbing eg. you target a CC mob which you don't want to attack, or if the raidlead orders a dps stop)
if you don't want to do that, you could MAYBE TRY something like
/run AttackTarget() AttackTarget()

I could just uncast attack then recast attack, but I could possibly miss out on an attack in the time it takes for me to hit it twice, so it preferably has to be one that it is done instantly.

Nice try on the macro, though. It turns my attack on, then off again instantly. I need it to do the opposite - turn my attack off, then on again instantly.