Skip CI commit message

I sometime use multiple CIs to cover different platforms (Travis CI for Mac and AppVeyor for Windows). Occasionally, I want to make a change that only affects one of the platforms and want to skip tests on the others. While Circle CI provides this feature in commit form (what I want), it unfortunately uses a vague syntax (skip ci or ci skip). It would be nice if I could add something for Circle CI specifically. For instance, circle skip or circle ci skip or similar. Would this be possible?

Thanks for the request! There is already an existing feature request for this here [ci skip] is great, but it is backwards