permutedims(a::InfRange) =a' is a hack

[dlfivefifty]

Because adjoints have special scalar dot product, this was a Q&D hack that needs to be fixed. The "right way" is to support infinite ReshapedArray.

[dlfivefifty]

This was fixed at some point:

julia> permutedims(1:∞)
1×∞ InfiniteArrays.ReshapedArray{Int64,2,InfiniteArrays.InfUnitRange{Int64},Tuple{Int64,InfiniteArrays.Infinity},Tuple{}} with indices Base.OneTo(1)×OneToInf():
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