How to test if an object is a formula in base R?

Question

R has many helpers for testing object type, e.g. is.character(x)

Is there an equivalent for the (strangely missing) is.formula(x)?

(PS: I see that at least one package has implemented this outside base R)

Answer 1

From my comment, you could just do:

is.formula <- function(x){
   inherits(x,"formula")
}