Initial alpha when using InitialPrevious initial guess

[jmeziere]

When using the InitialPrevious routine from LineSearches.jl, an optional parameter alpha can be given. However, when running the routine, this alpha is only used if state.alpha is NaN. Since the initialization of state.alpha sets it to 1, this optional parameter cannot be used as an initial guess for the InitialPrevious routine.

To me, it makes more sense that the input parameter would be the first alpha guess to be used. Is this behavior intended? If so, I can just redefine my own step size procedure.

[pkofod]

Could you post a Minimal working example (MWE)? I will look into it.