Just to add: nothing conceptually is strange for start and end to be arrays. Indeed, the code would work for arrays as is if it didn't check the `step == 0` case to handle denormals (arguably an even less common case than array-like inputs...), and made a trivial change to get the new axis to be at the start.
(I guess I'm agreeing with Matthew here that if conceptually things make sense for arrays, then it should just work; there are of course counterexample, such as `np.arange`, for which array-valued input makes even less sense than allowing float and complex).
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