Doesn't solve the underlying problem, but prevents it from happening. Error preferred to warning because I don't think there's a good autocorrection (putting an underscore at the start probably isn't helpful). Added some tests and noted in function docs and vignette.
Closes #124.
Doesn't solve the underlying problem, but prevents it from happening. Error preferred to warning because I don't think there's a good autocorrection (putting an underscore at the start probably isn't helpful). Added some tests and noted in function docs and vignette.