Return of Reckoning

Hello!

Just started up and I wanted to know if there is a macro command, so that if you press an ability button while channelling an ability, it wont cast if you are channeling?

I came from WoW and I remember there being something like /cast Fireball nochanneling or something like that so if you pressed "fireball" it wouldn't stop your channeling.

Thanks in advance for any help.

No not even when nerf buttons was available would it do that, that I know of.